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CVE-2024-46785 (GCVE-0-2024-46785)

Vulnerability from cvelistv5 – Published: 2024-09-18 07:12 – Updated: 2026-05-23 15:53
VLAI
Title
eventfs: Use list_del_rcu() for SRCU protected list variable
Summary
In the Linux kernel, the following vulnerability has been resolved: eventfs: Use list_del_rcu() for SRCU protected list variable Chi Zhiling reported: We found a null pointer accessing in tracefs[1], the reason is that the variable 'ei_child' is set to LIST_POISON1, that means the list was removed in eventfs_remove_rec. so when access the ei_child->is_freed, the panic triggered. by the way, the following script can reproduce this panic loop1 (){ while true do echo "p:kp submit_bio" > /sys/kernel/debug/tracing/kprobe_events echo "" > /sys/kernel/debug/tracing/kprobe_events done } loop2 (){ while true do tree /sys/kernel/debug/tracing/events/kprobes/ done } loop1 & loop2 [1]: [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150 [ 1147.968239][T17331] Mem abort info: [ 1147.971739][T17331] ESR = 0x0000000096000004 [ 1147.976172][T17331] EC = 0x25: DABT (current EL), IL = 32 bits [ 1147.982171][T17331] SET = 0, FnV = 0 [ 1147.985906][T17331] EA = 0, S1PTW = 0 [ 1147.989734][T17331] FSC = 0x04: level 0 translation fault [ 1147.995292][T17331] Data abort info: [ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls] [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G W ------- ---- 6.6.43 #2 [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650 [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020 [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398 [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398 [ 1148.115969][T17331] sp : ffff80008d56bbd0 [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000 [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100 [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10 [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000 [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0 [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0 [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862 [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068 [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001 [ 1148.198131][T17331] Call trace: [ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398 [ 1148.205864][T17331] iterate_dir+0x98/0x188 [ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160 [ 1148.215161][T17331] invoke_syscall+0x78/0x108 [ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0 [ 1148.224977][T17331] do_el0_svc+0x24/0x38 [ 1148.228974][T17331] el0_svc+0x40/0x168 [ 1148.232798][T17 ---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 14:29 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5dfb04100326f70e3b2d2872c2476ed20b804837 , < 05e08297c3c298d8ec28e5a5adb55840312dd87e (git)
Affected: 43aa6f97c2d03a52c1ddb86768575fc84344bdbb , < f579d17a86448779f9642ad8baca6e3036a8e2d6 (git)
Affected: 43aa6f97c2d03a52c1ddb86768575fc84344bdbb , < d2603279c7d645bf0d11fa253b23f1ab48fc8d3c (git)
Affected: 5a43badefe0eccca0c26144c0a44b8d417ce8103 (git)
Affected: 6.6.18 , < 6.6.51 (semver)
Affected: 6.7.6 , < 6.8 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.6.51 , ≤ 6.6.* (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neventfs: Use list_del_rcu() for SRCU protected list variable\n\nChi Zhiling reported:\n\n  We found a null pointer accessing in tracefs[1], the reason is that the\n  variable \u0027ei_child\u0027 is set to LIST_POISON1, that means the list was\n  removed in eventfs_remove_rec. so when access the ei_child-\u003eis_freed, the\n  panic triggered.\n\n  by the way, the following script can reproduce this panic\n\n  loop1 (){\n      while true\n      do\n          echo \"p:kp submit_bio\" \u003e /sys/kernel/debug/tracing/kprobe_events\n          echo \"\" \u003e /sys/kernel/debug/tracing/kprobe_events\n      done\n  }\n  loop2 (){\n      while true\n      do\n          tree /sys/kernel/debug/tracing/events/kprobes/\n      done\n  }\n  loop1 \u0026\n  loop2\n\n  [1]:\n  [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150\n  [ 1147.968239][T17331] Mem abort info:\n  [ 1147.971739][T17331]   ESR = 0x0000000096000004\n  [ 1147.976172][T17331]   EC = 0x25: DABT (current EL), IL = 32 bits\n  [ 1147.982171][T17331]   SET = 0, FnV = 0\n  [ 1147.985906][T17331]   EA = 0, S1PTW = 0\n  [ 1147.989734][T17331]   FSC = 0x04: level 0 translation fault\n  [ 1147.995292][T17331] Data abort info:\n  [ 1147.998858][T17331]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\n  [ 1148.005023][T17331]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n  [ 1148.010759][T17331]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n  [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges\n  [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP\n  [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]\n  [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G        W         ------- ----  6.6.43 #2\n  [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650\n  [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020\n  [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398\n  [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398\n  [ 1148.115969][T17331] sp : ffff80008d56bbd0\n  [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000\n  [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100\n  [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10\n  [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000\n  [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0\n  [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n  [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0\n  [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862\n  [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068\n  [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001\n  [ 1148.198131][T17331] Call trace:\n  [ 1148.201259][T17331]  eventfs_iterate+0x2c0/0x398\n  [ 1148.205864][T17331]  iterate_dir+0x98/0x188\n  [ 1148.210036][T17331]  __arm64_sys_getdents64+0x78/0x160\n  [ 1148.215161][T17331]  invoke_syscall+0x78/0x108\n  [ 1148.219593][T17331]  el0_svc_common.constprop.0+0x48/0xf0\n  [ 1148.224977][T17331]  do_el0_svc+0x24/0x38\n  [ 1148.228974][T17331]  el0_svc+0x40/0x168\n  [ 1148.232798][T17\n---truncated---"
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    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.6.18\", \"versionEndExcluding\": \"6.6.51\", \"matchCriteriaId\": \"7476B2E8-446E-44CC-913C-1FB416620536\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7.6\", \"versionEndExcluding\": \"6.8\", \"matchCriteriaId\": \"9048C5C2-5073-4D52-BC14-154912BA5D82\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.10.10\", \"matchCriteriaId\": \"4FAFFECB-D55B-4130-801C-AE52B8A6B1BA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"8B3CE743-2126-47A3-8B7C-822B502CF119\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"4DEB27E7-30AA-45CC-8934-B89263EF3551\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"E0005AEF-856E-47EB-BFE4-90C46899394D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"39889A68-6D34-47A6-82FC-CD0BF23D6754\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\", \"matchCriteriaId\": \"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\", \"matchCriteriaId\": \"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\neventfs: Use list_del_rcu() for SRCU protected list variable\\n\\nChi Zhiling reported:\\n\\n  We found a null pointer accessing in tracefs[1], the reason is that the\\n  variable \u0027ei_child\u0027 is set to LIST_POISON1, that means the list was\\n  removed in eventfs_remove_rec. so when access the ei_child-\u003eis_freed, the\\n  panic triggered.\\n\\n  by the way, the following script can reproduce this panic\\n\\n  loop1 (){\\n      while true\\n      do\\n          echo \\\"p:kp submit_bio\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n          echo \\\"\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n      done\\n  }\\n  loop2 (){\\n      while true\\n      do\\n          tree /sys/kernel/debug/tracing/events/kprobes/\\n      done\\n  }\\n  loop1 \u0026\\n  loop2\\n\\n  [1]:\\n  [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150\\n  [ 1147.968239][T17331] Mem abort info:\\n  [ 1147.971739][T17331]   ESR = 0x0000000096000004\\n  [ 1147.976172][T17331]   EC = 0x25: DABT (current EL), IL = 32 bits\\n  [ 1147.982171][T17331]   SET = 0, FnV = 0\\n  [ 1147.985906][T17331]   EA = 0, S1PTW = 0\\n  [ 1147.989734][T17331]   FSC = 0x04: level 0 translation fault\\n  [ 1147.995292][T17331] Data abort info:\\n  [ 1147.998858][T17331]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\\n  [ 1148.005023][T17331]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n  [ 1148.010759][T17331]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n  [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges\\n  [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP\\n  [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]\\n  [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G        W         ------- ----  6.6.43 #2\\n  [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650\\n  [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020\\n  [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n  [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398\\n  [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398\\n  [ 1148.115969][T17331] sp : ffff80008d56bbd0\\n  [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000\\n  [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100\\n  [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10\\n  [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000\\n  [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0\\n  [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\\n  [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0\\n  [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862\\n  [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068\\n  [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001\\n  [ 1148.198131][T17331] Call trace:\\n  [ 1148.201259][T17331]  eventfs_iterate+0x2c0/0x398\\n  [ 1148.205864][T17331]  iterate_dir+0x98/0x188\\n  [ 1148.210036][T17331]  __arm64_sys_getdents64+0x78/0x160\\n  [ 1148.215161][T17331]  invoke_syscall+0x78/0x108\\n  [ 1148.219593][T17331]  el0_svc_common.constprop.0+0x48/0xf0\\n  [ 1148.224977][T17331]  do_el0_svc+0x24/0x38\\n  [ 1148.228974][T17331]  el0_svc+0x40/0x168\\n  [ 1148.232798][T17\\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eventfs: Uso list_del_rcu() para la variable de lista protegida SRCU Chi Zhiling inform\\u00f3: Encontramos un puntero nulo accediendo en tracefs[1], la raz\\u00f3n es que la variable \u0027ei_child\u0027 est\\u00e1 configurada en LIST_POISON1, lo que significa que la lista se elimin\\u00f3 en eventfs_remove_rec. entonces, cuando se accede a ei_child-\u0026gt;is_freed, se activa el p\\u00e1nico. por cierto, el siguiente script puede reproducir este bucle de p\\u00e1nico loop1 (){ while true do echo \\\"p:kp submission_bio\\\" \u0026gt; /sys/kernel/debug/tracing/kprobe_events echo \\\"\\\" \u0026gt; /sys/kernel/debug/tracing/kprobe_events done } loop2 (){ while true do tree /sys/kernel/debug/tracing/events/kprobes/ done } loop1 \u0026amp; loop2 [1]: [ 1147.959632][T17331] No se puede manejar la solicitud de paginaci\\u00f3n del n\\u00facleo en la direcci\\u00f3n virtual dead000000000150 [ 1147.968239][T17331] Informaci\\u00f3n de aborto de memoria: [ 1147.971739][T17331] ESR = 0x0000000096000004 [ 1147.976172][T17331] EC = 0x25: DABT (EL actual), IL = 32 bits [ 1147.982171][T17331] SET = 0, FnV = 0 [ 1147.985906][T17331] EA = 0, S1PTW = 0 [ 1147.989734][T17331] FSC = 0x04: error de traducci\\u00f3n de nivel 0 [ 1147.995292][T17331] Informaci\\u00f3n de cancelaci\\u00f3n de datos: [ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 1148.016752][T17331] [dead000000000150] direcci\\u00f3n entre los rangos de direcciones del usuario y del n\\u00facleo [ 1148.024571][T17331] Error interno: Oops: 0000000096000004 [#1] SMP [ 1148.030825][T17331] M\\u00f3dulos vinculados en: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls puente ib_core de macvlan dummy stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [\\u00faltima descarga: tls] [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Contaminado: GW ------- ---- 6.6.43 #2 [ 1148.081751][T17331] Versi\\u00f3n de origen: 21b3b386e948bedd29369af66f3e98ab01b1c650 [ 1148.088783][T17331] Nombre del hardware: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 16/07/2020 [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398 [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398 [ 1148.115969][T17331] sp : ffff80008d56bbd0 [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000 [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: muerto000000000100 [ 1148.135598][T17331] x23: 0000000000000000 x22: 0000000000000000b x21: ffff800082645f10 [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 000000000000000 [ 1148.151231][T17331] x17: 000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0 [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 1148.166864][T17331] x11: 000000000000000 x10: 000000000000000 x9 : ffff8000804391d0 [ 1148.174680][T17331] x8 : 000000018000000 x7 : 0000000000000018 x6 : 0000aaab04b92862 [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068 [ 1148.190314][T17331] x2 : 00000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001 [ 1148.198131][T17331] Rastreo de llamadas: [ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398 [ 1148.205864][T17331] iterar_dir+0x98/0x188 [ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160 [ 1148.215161][T17331] invocar_llamada_al_sistema+0x78/0x108 [ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0 [ 1148.224977][T17331] hacer_el0_svc+0x24/0x38 [ 1148.228974][T17331] el0_svc+0x40/0x168 [ 1148.232798][T17 ---truncado---\"}]",
      "id": "CVE-2024-46785",
      "lastModified": "2024-11-20T15:51:33.027",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-09-18T08:15:05.730",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/05e08297c3c298d8ec28e5a5adb55840312dd87e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/d2603279c7d645bf0d11fa253b23f1ab48fc8d3c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f579d17a86448779f9642ad8baca6e3036a8e2d6\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-476\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-46785\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-18T08:15:05.730\",\"lastModified\":\"2026-06-17T07:55:55.730\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\neventfs: Use list_del_rcu() for SRCU protected list variable\\n\\nChi Zhiling reported:\\n\\n  We found a null pointer accessing in tracefs[1], the reason is that the\\n  variable \u0027ei_child\u0027 is set to LIST_POISON1, that means the list was\\n  removed in eventfs_remove_rec. so when access the ei_child-\u003eis_freed, the\\n  panic triggered.\\n\\n  by the way, the following script can reproduce this panic\\n\\n  loop1 (){\\n      while true\\n      do\\n          echo \\\"p:kp submit_bio\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n          echo \\\"\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n      done\\n  }\\n  loop2 (){\\n      while true\\n      do\\n          tree /sys/kernel/debug/tracing/events/kprobes/\\n      done\\n  }\\n  loop1 \u0026\\n  loop2\\n\\n  [1]:\\n  [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150\\n  [ 1147.968239][T17331] Mem abort info:\\n  [ 1147.971739][T17331]   ESR = 0x0000000096000004\\n  [ 1147.976172][T17331]   EC = 0x25: DABT (current EL), IL = 32 bits\\n  [ 1147.982171][T17331]   SET = 0, FnV = 0\\n  [ 1147.985906][T17331]   EA = 0, S1PTW = 0\\n  [ 1147.989734][T17331]   FSC = 0x04: level 0 translation fault\\n  [ 1147.995292][T17331] Data abort info:\\n  [ 1147.998858][T17331]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\\n  [ 1148.005023][T17331]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n  [ 1148.010759][T17331]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n  [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges\\n  [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP\\n  [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]\\n  [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G        W         ------- ----  6.6.43 #2\\n  [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650\\n  [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020\\n  [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n  [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398\\n  [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398\\n  [ 1148.115969][T17331] sp : ffff80008d56bbd0\\n  [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000\\n  [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100\\n  [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10\\n  [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000\\n  [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0\\n  [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\\n  [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0\\n  [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862\\n  [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068\\n  [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001\\n  [ 1148.198131][T17331] Call trace:\\n  [ 1148.201259][T17331]  eventfs_iterate+0x2c0/0x398\\n  [ 1148.205864][T17331]  iterate_dir+0x98/0x188\\n  [ 1148.210036][T17331]  __arm64_sys_getdents64+0x78/0x160\\n  [ 1148.215161][T17331]  invoke_syscall+0x78/0x108\\n  [ 1148.219593][T17331]  el0_svc_common.constprop.0+0x48/0xf0\\n  [ 1148.224977][T17331]  do_el0_svc+0x24/0x38\\n  [ 1148.228974][T17331]  el0_svc+0x40/0x168\\n  [ 1148.232798][T17\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: eventfs: Uso list_del_rcu() para la variable de lista protegida SRCU Chi Zhiling inform\u00f3: Encontramos un puntero nulo accediendo en tracefs[1], la raz\u00f3n es que la variable \u0027ei_child\u0027 est\u00e1 configurada en LIST_POISON1, lo que significa que la lista se elimin\u00f3 en eventfs_remove_rec. entonces, cuando se accede a ei_child-\u0026gt;is_freed, se activa el p\u00e1nico. por cierto, el siguiente script puede reproducir este bucle de p\u00e1nico loop1 (){ while true do echo \\\"p:kp submission_bio\\\" \u0026gt; /sys/kernel/debug/tracing/kprobe_events echo \\\"\\\" \u0026gt; /sys/kernel/debug/tracing/kprobe_events done } loop2 (){ while true do tree /sys/kernel/debug/tracing/events/kprobes/ done } loop1 \u0026amp; loop2 [1]: [ 1147.959632][T17331] No se puede manejar la solicitud de paginaci\u00f3n del n\u00facleo en la direcci\u00f3n virtual dead000000000150 [ 1147.968239][T17331] Informaci\u00f3n de aborto de memoria: [ 1147.971739][T17331] ESR = 0x0000000096000004 [ 1147.976172][T17331] EC = 0x25: DABT (EL actual), IL = 32 bits [ 1147.982171][T17331] SET = 0, FnV = 0 [ 1147.985906][T17331] EA = 0, S1PTW = 0 [ 1147.989734][T17331] FSC = 0x04: error de traducci\u00f3n de nivel 0 [ 1147.995292][T17331] Informaci\u00f3n de cancelaci\u00f3n de datos: [ 1147.998858][T17331] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 1148.005023][T17331] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 1148.010759][T17331] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 1148.016752][T17331] [dead000000000150] direcci\u00f3n entre los rangos de direcciones del usuario y del n\u00facleo [ 1148.024571][T17331] Error interno: Oops: 0000000096000004 [#1] SMP [ 1148.030825][T17331] M\u00f3dulos vinculados en: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls puente ib_core de macvlan dummy stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [\u00faltima descarga: tls] [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Contaminado: GW ------- ---- 6.6.43 #2 [ 1148.081751][T17331] Versi\u00f3n de origen: 21b3b386e948bedd29369af66f3e98ab01b1c650 [ 1148.088783][T17331] Nombre del hardware: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 16/07/2020 [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398 [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398 [ 1148.115969][T17331] sp : ffff80008d56bbd0 [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000 [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: muerto000000000100 [ 1148.135598][T17331] x23: 0000000000000000 x22: 0000000000000000b x21: ffff800082645f10 [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 000000000000000 [ 1148.151231][T17331] x17: 000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0 [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 1148.166864][T17331] x11: 000000000000000 x10: 000000000000000 x9 : ffff8000804391d0 [ 1148.174680][T17331] x8 : 000000018000000 x7 : 0000000000000018 x6 : 0000aaab04b92862 [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068 [ 1148.190314][T17331] x2 : 00000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001 [ 1148.198131][T17331] Rastreo de llamadas: [ 1148.201259][T17331] eventfs_iterate+0x2c0/0x398 [ 1148.205864][T17331] iterar_dir+0x98/0x188 [ 1148.210036][T17331] __arm64_sys_getdents64+0x78/0x160 [ 1148.215161][T17331] invocar_llamada_al_sistema+0x78/0x108 [ 1148.219593][T17331] el0_svc_common.constprop.0+0x48/0xf0 [ 1148.224977][T17331] hacer_el0_svc+0x24/0x38 [ 1148.228974][T17331] el0_svc+0x40/0x168 [ 1148.232798][T17 ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/tracefs/event_inode.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5dfb04100326f70e3b2d2872c2476ed20b804837\",\"lessThan\":\"05e08297c3c298d8ec28e5a5adb55840312dd87e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43aa6f97c2d03a52c1ddb86768575fc84344bdbb\",\"lessThan\":\"f579d17a86448779f9642ad8baca6e3036a8e2d6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43aa6f97c2d03a52c1ddb86768575fc84344bdbb\",\"lessThan\":\"d2603279c7d645bf0d11fa253b23f1ab48fc8d3c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5a43badefe0eccca0c26144c0a44b8d417ce8103\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6.6.18\",\"lessThan\":\"6.6.51\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.7.6\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/tracefs/event_inode.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.51\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.10\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-29T14:29:25.757655Z\",\"id\":\"CVE-2024-46785\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.18\",\"versionEndExcluding\":\"6.6.51\",\"matchCriteriaId\":\"7476B2E8-446E-44CC-913C-1FB416620536\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.6\",\"versionEndExcluding\":\"6.8\",\"matchCriteriaId\":\"9048C5C2-5073-4D52-BC14-154912BA5D82\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.10.10\",\"matchCriteriaId\":\"4FAFFECB-D55B-4130-801C-AE52B8A6B1BA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/05e08297c3c298d8ec28e5a5adb55840312dd87e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d2603279c7d645bf0d11fa253b23f1ab48fc8d3c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f579d17a86448779f9642ad8baca6e3036a8e2d6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T14:22:29+00:00",
      "cve": "CVE-2024-46785",
      "id": "CVE-2024-46785",
      "initial_release_date": "2024-09-18T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: eventfs: Use list_del_rcu() for SRCU protected list variable",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46785.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-30T02:24:26Z",
      "cve": "CVE-2024-46785",
      "id": "CVE-2024-46785",
      "initial_release_date": "2024-09-19T03:09:57Z",
      "product_status:known_not_affected": "399",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-46785",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-46785.json",
      "version": "18"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46785\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T14:29:25.757655Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T14:29:29.911Z\"}}], \"cna\": {\"title\": \"eventfs: Use list_del_rcu() for SRCU protected list variable\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5dfb04100326f70e3b2d2872c2476ed20b804837\", \"lessThan\": \"05e08297c3c298d8ec28e5a5adb55840312dd87e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"43aa6f97c2d03a52c1ddb86768575fc84344bdbb\", \"lessThan\": \"f579d17a86448779f9642ad8baca6e3036a8e2d6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"43aa6f97c2d03a52c1ddb86768575fc84344bdbb\", \"lessThan\": \"d2603279c7d645bf0d11fa253b23f1ab48fc8d3c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5a43badefe0eccca0c26144c0a44b8d417ce8103\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6.6.18\", \"lessThan\": \"6.6.51\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.7.6\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}], \"programFiles\": [\"fs/tracefs/event_inode.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.51\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/tracefs/event_inode.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/05e08297c3c298d8ec28e5a5adb55840312dd87e\"}, {\"url\": \"https://git.kernel.org/stable/c/f579d17a86448779f9642ad8baca6e3036a8e2d6\"}, {\"url\": \"https://git.kernel.org/stable/c/d2603279c7d645bf0d11fa253b23f1ab48fc8d3c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\neventfs: Use list_del_rcu() for SRCU protected list variable\\n\\nChi Zhiling reported:\\n\\n  We found a null pointer accessing in tracefs[1], the reason is that the\\n  variable \u0027ei_child\u0027 is set to LIST_POISON1, that means the list was\\n  removed in eventfs_remove_rec. so when access the ei_child-\u003eis_freed, the\\n  panic triggered.\\n\\n  by the way, the following script can reproduce this panic\\n\\n  loop1 (){\\n      while true\\n      do\\n          echo \\\"p:kp submit_bio\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n          echo \\\"\\\" \u003e /sys/kernel/debug/tracing/kprobe_events\\n      done\\n  }\\n  loop2 (){\\n      while true\\n      do\\n          tree /sys/kernel/debug/tracing/events/kprobes/\\n      done\\n  }\\n  loop1 \u0026\\n  loop2\\n\\n  [1]:\\n  [ 1147.959632][T17331] Unable to handle kernel paging request at virtual address dead000000000150\\n  [ 1147.968239][T17331] Mem abort info:\\n  [ 1147.971739][T17331]   ESR = 0x0000000096000004\\n  [ 1147.976172][T17331]   EC = 0x25: DABT (current EL), IL = 32 bits\\n  [ 1147.982171][T17331]   SET = 0, FnV = 0\\n  [ 1147.985906][T17331]   EA = 0, S1PTW = 0\\n  [ 1147.989734][T17331]   FSC = 0x04: level 0 translation fault\\n  [ 1147.995292][T17331] Data abort info:\\n  [ 1147.998858][T17331]   ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000\\n  [ 1148.005023][T17331]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n  [ 1148.010759][T17331]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n  [ 1148.016752][T17331] [dead000000000150] address between user and kernel address ranges\\n  [ 1148.024571][T17331] Internal error: Oops: 0000000096000004 [#1] SMP\\n  [ 1148.030825][T17331] Modules linked in: team_mode_loadbalance team nlmon act_gact cls_flower sch_ingress bonding tls macvlan dummy ib_core bridge stp llc veth amdgpu amdxcp mfd_core gpu_sched drm_exec drm_buddy radeon crct10dif_ce video drm_suballoc_helper ghash_ce drm_ttm_helper sha2_ce ttm sha256_arm64 i2c_algo_bit sha1_ce sbsa_gwdt cp210x drm_display_helper cec sr_mod cdrom drm_kms_helper binfmt_misc sg loop fuse drm dm_mod nfnetlink ip_tables autofs4 [last unloaded: tls]\\n  [ 1148.072808][T17331] CPU: 3 PID: 17331 Comm: ls Tainted: G        W         ------- ----  6.6.43 #2\\n  [ 1148.081751][T17331] Source Version: 21b3b386e948bedd29369af66f3e98ab01b1c650\\n  [ 1148.088783][T17331] Hardware name: Greatwall GW-001M1A-FTF/GW-001M1A-FTF, BIOS KunLun BIOS V4.0 07/16/2020\\n  [ 1148.098419][T17331] pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n  [ 1148.106060][T17331] pc : eventfs_iterate+0x2c0/0x398\\n  [ 1148.111017][T17331] lr : eventfs_iterate+0x2fc/0x398\\n  [ 1148.115969][T17331] sp : ffff80008d56bbd0\\n  [ 1148.119964][T17331] x29: ffff80008d56bbf0 x28: ffff001ff5be2600 x27: 0000000000000000\\n  [ 1148.127781][T17331] x26: ffff001ff52ca4e0 x25: 0000000000009977 x24: dead000000000100\\n  [ 1148.135598][T17331] x23: 0000000000000000 x22: 000000000000000b x21: ffff800082645f10\\n  [ 1148.143415][T17331] x20: ffff001fddf87c70 x19: ffff80008d56bc90 x18: 0000000000000000\\n  [ 1148.151231][T17331] x17: 0000000000000000 x16: 0000000000000000 x15: ffff001ff52ca4e0\\n  [ 1148.159048][T17331] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\\n  [ 1148.166864][T17331] x11: 0000000000000000 x10: 0000000000000000 x9 : ffff8000804391d0\\n  [ 1148.174680][T17331] x8 : 0000000180000000 x7 : 0000000000000018 x6 : 0000aaab04b92862\\n  [ 1148.182498][T17331] x5 : 0000aaab04b92862 x4 : 0000000080000000 x3 : 0000000000000068\\n  [ 1148.190314][T17331] x2 : 000000000000000f x1 : 0000000000007ea8 x0 : 0000000000000001\\n  [ 1148.198131][T17331] Call trace:\\n  [ 1148.201259][T17331]  eventfs_iterate+0x2c0/0x398\\n  [ 1148.205864][T17331]  iterate_dir+0x98/0x188\\n  [ 1148.210036][T17331]  __arm64_sys_getdents64+0x78/0x160\\n  [ 1148.215161][T17331]  invoke_syscall+0x78/0x108\\n  [ 1148.219593][T17331]  el0_svc_common.constprop.0+0x48/0xf0\\n  [ 1148.224977][T17331]  do_el0_svc+0x24/0x38\\n  [ 1148.228974][T17331]  el0_svc+0x40/0x168\\n  [ 1148.232798][T17\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.51\", \"versionStartIncluding\": \"6.6.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.10\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"6.8\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.7.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:53:32.437Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46785\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:53:32.437Z\", \"dateReserved\": \"2024-09-11T15:12:18.277Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-18T07:12:41.529Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.