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CVE-2024-26987 (GCVE-0-2024-26987)

Vulnerability from cvelistv5 – Published: 2024-05-01 05:27 – Updated: 2026-05-11 20:08
VLAI
Title
mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled When I did hard offline test with hugetlb pages, below deadlock occurs: ====================================================== WARNING: possible circular locking dependency detected 6.8.0-11409-gf6cef5f8c37f #1 Not tainted ------------------------------------------------------ bash/46904 is trying to acquire lock: ffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60 but task is already holding lock: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (pcp_batch_high_lock){+.+.}-{3:3}: __mutex_lock+0x6c/0x770 page_alloc_cpu_online+0x3c/0x70 cpuhp_invoke_callback+0x397/0x5f0 __cpuhp_invoke_callback_range+0x71/0xe0 _cpu_up+0xeb/0x210 cpu_up+0x91/0xe0 cpuhp_bringup_mask+0x49/0xb0 bringup_nonboot_cpus+0xb7/0xe0 smp_init+0x25/0xa0 kernel_init_freeable+0x15f/0x3e0 kernel_init+0x15/0x1b0 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 -> #0 (cpu_hotplug_lock){++++}-{0:0}: __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(pcp_batch_high_lock); lock(cpu_hotplug_lock); lock(pcp_batch_high_lock); rlock(cpu_hotplug_lock); *** DEADLOCK *** 5 locks held by bash/46904: #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0 #1: ffff98f6c328e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0 #2: ffff98ef83b31890 (kn->active#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0 #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70 #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40 stack backtrace: CPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x68/0xa0 check_noncircular+0x129/0x140 __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fc862314887 Code: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 RSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887 RDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001 RBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c R13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00 In short, below scene breaks the ---truncated---
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:40 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a6b40850c442bf996e729e1d441d3dbc37cea171 , < 5ef7ba2799a3b5ed292b8f6407376e2c25ef002e (git)
Affected: a6b40850c442bf996e729e1d441d3dbc37cea171 , < 882e1180c83f5b75bae03d0ccc31ccedfe5159de (git)
Affected: a6b40850c442bf996e729e1d441d3dbc37cea171 , < 49955b24002dc16a0ae2e83a57a2a6c863a1845c (git)
Affected: a6b40850c442bf996e729e1d441d3dbc37cea171 , < 1983184c22dd84a4d95a71e5c6775c2638557dc7 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.1.88 , ≤ 6.1.* (semver)
Unaffected: 6.6.29 , ≤ 6.6.* (semver)
Unaffected: 6.8.8 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled\\n\\nWhen I did hard offline test with hugetlb pages, below deadlock occurs:\\n\\n======================================================\\nWARNING: possible circular locking dependency detected\\n6.8.0-11409-gf6cef5f8c37f #1 Not tainted\\n------------------------------------------------------\\nbash/46904 is trying to acquire lock:\\nffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60\\n\\nbut task is already holding lock:\\nffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nwhich lock already depends on the new lock.\\n\\nthe existing dependency chain (in reverse order) is:\\n\\n-\u003e #1 (pcp_batch_high_lock){+.+.}-{3:3}:\\n       __mutex_lock+0x6c/0x770\\n       page_alloc_cpu_online+0x3c/0x70\\n       cpuhp_invoke_callback+0x397/0x5f0\\n       __cpuhp_invoke_callback_range+0x71/0xe0\\n       _cpu_up+0xeb/0x210\\n       cpu_up+0x91/0xe0\\n       cpuhp_bringup_mask+0x49/0xb0\\n       bringup_nonboot_cpus+0xb7/0xe0\\n       smp_init+0x25/0xa0\\n       kernel_init_freeable+0x15f/0x3e0\\n       kernel_init+0x15/0x1b0\\n       ret_from_fork+0x2f/0x50\\n       ret_from_fork_asm+0x1a/0x30\\n\\n-\u003e #0 (cpu_hotplug_lock){++++}-{0:0}:\\n       __lock_acquire+0x1298/0x1cd0\\n       lock_acquire+0xc0/0x2b0\\n       cpus_read_lock+0x2a/0xc0\\n       static_key_slow_dec+0x16/0x60\\n       __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n       dissolve_free_huge_page+0x211/0x260\\n       __page_handle_poison+0x45/0xc0\\n       memory_failure+0x65e/0xc70\\n       hard_offline_page_store+0x55/0xa0\\n       kernfs_fop_write_iter+0x12c/0x1d0\\n       vfs_write+0x387/0x550\\n       ksys_write+0x64/0xe0\\n       do_syscall_64+0xca/0x1e0\\n       entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nother info that might help us debug this:\\n\\n Possible unsafe locking scenario:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(pcp_batch_high_lock);\\n                               lock(cpu_hotplug_lock);\\n                               lock(pcp_batch_high_lock);\\n  rlock(cpu_hotplug_lock);\\n\\n *** DEADLOCK ***\\n\\n5 locks held by bash/46904:\\n #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0\\n #1: ffff98f6c328e488 (\u0026of-\u003emutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0\\n #2: ffff98ef83b31890 (kn-\u003eactive#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0\\n #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70\\n #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nstack backtrace:\\nCPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x68/0xa0\\n check_noncircular+0x129/0x140\\n __lock_acquire+0x1298/0x1cd0\\n lock_acquire+0xc0/0x2b0\\n cpus_read_lock+0x2a/0xc0\\n static_key_slow_dec+0x16/0x60\\n __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n dissolve_free_huge_page+0x211/0x260\\n __page_handle_poison+0x45/0xc0\\n memory_failure+0x65e/0xc70\\n hard_offline_page_store+0x55/0xa0\\n kernfs_fop_write_iter+0x12c/0x1d0\\n vfs_write+0x387/0x550\\n ksys_write+0x64/0xe0\\n do_syscall_64+0xca/0x1e0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\nRIP: 0033:0x7fc862314887\\nCode: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24\\nRSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\nRAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887\\nRDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001\\nRBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff\\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c\\nR13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00\\n\\nIn short, below scene breaks the \\n---truncated---\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: mm/memory-failure: corrige el interbloqueo cuando Hugetlb_optimize_vmemmap est\\u00e1 habilitado Cuando hice una prueba dura sin conexi\\u00f3n con p\\u00e1ginas de Hugetlb, se produce el siguiente interbloqueo: ============ ========================================== ADVERTENCIA: posible dependencia de bloqueo circular detectada 6.8 .0-11409-gf6cef5f8c37f #1 No contaminado ---------------------------------------- -------------- bash/46904 est\\u00e1 intentando adquirir el bloqueo: ffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, en: static_key_slow_dec+0x16/0x60 pero la tarea est\\u00e1 ya mantiene el bloqueo: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, en: zone_pcp_disable+0x16/0x40 cuyo bloqueo ya depende del nuevo bloqueo. la cadena de dependencia existente (en orden inverso) es: -\u0026gt; #1 (pcp_batch_high_lock){+.+.}-{3:3}: __mutex_lock+0x6c/0x770 page_alloc_cpu_online+0x3c/0x70 cpuhp_invoke_callback+0x397/0x5f0 __cpuhp_invoke_callback_range+0x71/ 0xe0 _cpu_up+0xeb/0x210 cpu_up+0x91/0xe0 cpuhp_bringup_mask+0x49/0xb0 Bringup_nonboot_cpus+0xb7/0xe0 smp_init+0x25/0xa0 kernel_init_freeable+0x15f/0x3e0 kernel_init+0x15/0x1b0 t_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 -\u0026gt; #0 (cpu_hotplug_lock){++++}-{0:0}: __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge _p\\u00e1gina+0x211/0x260 __p\\u00e1gina_handle_poison+0x45/ 0xc0 error_de_memoria+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entrada_SYSCALL_6 4_after_hwframe+0x6d/0x75 otra informaci\\u00f3n que podr\\u00eda ayudarnos a depurar esto: Posible escenario de bloqueo inseguro: CPU0 CPU1 ---- ---- bloqueo(pcp_batch_high_lock); bloquear(cpu_hotplug_lock); bloquear(pcp_batch_high_lock); rlock(cpu_hotplug_lock); *** DEADLOCK *** 5 bloqueos retenidos por bash/46904: #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, en: ksys_write+0x64/0xe0 #1: ffff98f6c328e488 (\u0026amp;of -\u0026gt;mutex){+.+.}-{3:3}, en: kernfs_fop_write_iter+0xf8/0x1d0 #2: ffff98ef83b31890 (kn-\u0026gt;active#113){.+.+}-{0:0}, en : kernfs_fop_write_iter+0x100/0x1d0 #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, en: Memory_failure+0x44/0xc70 #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3: 3}, en: zone_pcp_disable+0x16/0x40 seguimiento de pila: CPU: 10 PID: 46904 Comm: bash Kdump: cargado No contaminado 6.8.0-11409-gf6cef5f8c37f #1 Nombre de hardware: PC est\\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl+0x68/0xa0 check_noncircular+0x129/0x140 __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus _read_lock+0x2a /0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 Memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0 xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca /0x1e0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fc862314887 C\\u00f3digo: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 RSP: 002b:00007fff19311268 EFLAGS: 00000246 : 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887 RDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001 RBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007ffffff R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c R13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00 En resumen, La siguiente escena rompe el ---truncado---\"}]",
      "id": "CVE-2024-26987",
      "lastModified": "2024-11-21T09:03:33.697",
      "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": "2024-05-01T06:15:16.260",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-667\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T02:05:57.000Z",
      "cve": "CVE-2024-26987",
      "id": "msrc_CVE-2024-26987",
      "initial_release_date": "2024-05-02T07:00:00.000Z",
      "product_status:fixed": "4",
      "product_status:known_affected": "4",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26987.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26987\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-01T06:15:16.260\",\"lastModified\":\"2026-06-17T07:18:52.137\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled\\n\\nWhen I did hard offline test with hugetlb pages, below deadlock occurs:\\n\\n======================================================\\nWARNING: possible circular locking dependency detected\\n6.8.0-11409-gf6cef5f8c37f #1 Not tainted\\n------------------------------------------------------\\nbash/46904 is trying to acquire lock:\\nffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60\\n\\nbut task is already holding lock:\\nffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nwhich lock already depends on the new lock.\\n\\nthe existing dependency chain (in reverse order) is:\\n\\n-\u003e #1 (pcp_batch_high_lock){+.+.}-{3:3}:\\n       __mutex_lock+0x6c/0x770\\n       page_alloc_cpu_online+0x3c/0x70\\n       cpuhp_invoke_callback+0x397/0x5f0\\n       __cpuhp_invoke_callback_range+0x71/0xe0\\n       _cpu_up+0xeb/0x210\\n       cpu_up+0x91/0xe0\\n       cpuhp_bringup_mask+0x49/0xb0\\n       bringup_nonboot_cpus+0xb7/0xe0\\n       smp_init+0x25/0xa0\\n       kernel_init_freeable+0x15f/0x3e0\\n       kernel_init+0x15/0x1b0\\n       ret_from_fork+0x2f/0x50\\n       ret_from_fork_asm+0x1a/0x30\\n\\n-\u003e #0 (cpu_hotplug_lock){++++}-{0:0}:\\n       __lock_acquire+0x1298/0x1cd0\\n       lock_acquire+0xc0/0x2b0\\n       cpus_read_lock+0x2a/0xc0\\n       static_key_slow_dec+0x16/0x60\\n       __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n       dissolve_free_huge_page+0x211/0x260\\n       __page_handle_poison+0x45/0xc0\\n       memory_failure+0x65e/0xc70\\n       hard_offline_page_store+0x55/0xa0\\n       kernfs_fop_write_iter+0x12c/0x1d0\\n       vfs_write+0x387/0x550\\n       ksys_write+0x64/0xe0\\n       do_syscall_64+0xca/0x1e0\\n       entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nother info that might help us debug this:\\n\\n Possible unsafe locking scenario:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(pcp_batch_high_lock);\\n                               lock(cpu_hotplug_lock);\\n                               lock(pcp_batch_high_lock);\\n  rlock(cpu_hotplug_lock);\\n\\n *** DEADLOCK ***\\n\\n5 locks held by bash/46904:\\n #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0\\n #1: ffff98f6c328e488 (\u0026of-\u003emutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0\\n #2: ffff98ef83b31890 (kn-\u003eactive#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0\\n #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70\\n #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nstack backtrace:\\nCPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x68/0xa0\\n check_noncircular+0x129/0x140\\n __lock_acquire+0x1298/0x1cd0\\n lock_acquire+0xc0/0x2b0\\n cpus_read_lock+0x2a/0xc0\\n static_key_slow_dec+0x16/0x60\\n __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n dissolve_free_huge_page+0x211/0x260\\n __page_handle_poison+0x45/0xc0\\n memory_failure+0x65e/0xc70\\n hard_offline_page_store+0x55/0xa0\\n kernfs_fop_write_iter+0x12c/0x1d0\\n vfs_write+0x387/0x550\\n ksys_write+0x64/0xe0\\n do_syscall_64+0xca/0x1e0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\nRIP: 0033:0x7fc862314887\\nCode: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24\\nRSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\nRAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887\\nRDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001\\nRBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff\\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c\\nR13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00\\n\\nIn short, below scene breaks the \\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mm/memory-failure: corrige el interbloqueo cuando Hugetlb_optimize_vmemmap est\u00e1 habilitado Cuando hice una prueba dura sin conexi\u00f3n con p\u00e1ginas de Hugetlb, se produce el siguiente interbloqueo: ============ ========================================== ADVERTENCIA: posible dependencia de bloqueo circular detectada 6.8 .0-11409-gf6cef5f8c37f #1 No contaminado ---------------------------------------- -------------- bash/46904 est\u00e1 intentando adquirir el bloqueo: ffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, en: static_key_slow_dec+0x16/0x60 pero la tarea est\u00e1 ya mantiene el bloqueo: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, en: zone_pcp_disable+0x16/0x40 cuyo bloqueo ya depende del nuevo bloqueo. la cadena de dependencia existente (en orden inverso) es: -\u0026gt; #1 (pcp_batch_high_lock){+.+.}-{3:3}: __mutex_lock+0x6c/0x770 page_alloc_cpu_online+0x3c/0x70 cpuhp_invoke_callback+0x397/0x5f0 __cpuhp_invoke_callback_range+0x71/ 0xe0 _cpu_up+0xeb/0x210 cpu_up+0x91/0xe0 cpuhp_bringup_mask+0x49/0xb0 Bringup_nonboot_cpus+0xb7/0xe0 smp_init+0x25/0xa0 kernel_init_freeable+0x15f/0x3e0 kernel_init+0x15/0x1b0 t_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 -\u0026gt; #0 (cpu_hotplug_lock){++++}-{0:0}: __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus_read_lock+0x2a/0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge _p\u00e1gina+0x211/0x260 __p\u00e1gina_handle_poison+0x45/ 0xc0 error_de_memoria+0x65e/0xc70 hard_offline_page_store+0x55/0xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca/0x1e0 entrada_SYSCALL_6 4_after_hwframe+0x6d/0x75 otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: Posible escenario de bloqueo inseguro: CPU0 CPU1 ---- ---- bloqueo(pcp_batch_high_lock); bloquear(cpu_hotplug_lock); bloquear(pcp_batch_high_lock); rlock(cpu_hotplug_lock); *** DEADLOCK *** 5 bloqueos retenidos por bash/46904: #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, en: ksys_write+0x64/0xe0 #1: ffff98f6c328e488 (\u0026amp;of -\u0026gt;mutex){+.+.}-{3:3}, en: kernfs_fop_write_iter+0xf8/0x1d0 #2: ffff98ef83b31890 (kn-\u0026gt;active#113){.+.+}-{0:0}, en : kernfs_fop_write_iter+0x100/0x1d0 #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, en: Memory_failure+0x44/0xc70 #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3: 3}, en: zone_pcp_disable+0x16/0x40 seguimiento de pila: CPU: 10 PID: 46904 Comm: bash Kdump: cargado No contaminado 6.8.0-11409-gf6cef5f8c37f #1 Nombre de hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl+0x68/0xa0 check_noncircular+0x129/0x140 __lock_acquire+0x1298/0x1cd0 lock_acquire+0xc0/0x2b0 cpus _read_lock+0x2a /0xc0 static_key_slow_dec+0x16/0x60 __hugetlb_vmemmap_restore_folio+0x1b9/0x200 dissolve_free_huge_page+0x211/0x260 __page_handle_poison+0x45/0xc0 Memory_failure+0x65e/0xc70 hard_offline_page_store+0x55/0 xa0 kernfs_fop_write_iter+0x12c/0x1d0 vfs_write+0x387/0x550 ksys_write+0x64/0xe0 do_syscall_64+0xca /0x1e0 Entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fc862314887 C\u00f3digo: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 RSP: 002b:00007fff19311268 EFLAGS: 00000246 : 0000000000000001 RAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887 RDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001 RBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007ffffff R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c R13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00 En resumen, La siguiente escena rompe el ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"mm/memory-failure.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"a6b40850c442bf996e729e1d441d3dbc37cea171\",\"lessThan\":\"5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a6b40850c442bf996e729e1d441d3dbc37cea171\",\"lessThan\":\"882e1180c83f5b75bae03d0ccc31ccedfe5159de\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a6b40850c442bf996e729e1d441d3dbc37cea171\",\"lessThan\":\"49955b24002dc16a0ae2e83a57a2a6c863a1845c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a6b40850c442bf996e729e1d441d3dbc37cea171\",\"lessThan\":\"1983184c22dd84a4d95a71e5c6775c2638557dc7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"mm/memory-failure.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.88\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.29\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.8.8\",\"lessThanOrEqual\":\"6.8.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.9\",\"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\":\"2024-06-17T17:40:46.496934Z\",\"id\":\"CVE-2024-26987\",\"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-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"6.1.88\",\"matchCriteriaId\":\"B8A22524-9F14-4E3F-8B0D-E2A689BE7F8A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.29\",\"matchCriteriaId\":\"0999E154-1E68-41FA-8DE3-9A735E382224\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.8.8\",\"matchCriteriaId\":\"673B3328-389D-41A4-9617-669298635262\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"22BEDD49-2C6D-402D-9DBF-6646F6ECD10B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"DF73CB2A-DFFD-46FB-9BFE-AA394F27EA37\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"52048DDA-FC5A-4363-95A0-A6357B4D7F8C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"A06B2CCF-3F43-4FA9-8773-C83C3F5764B2\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CC559B26-5DFC-4B7A-A27C-B77DE755DFF9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CA277A6C-83EC-4536-9125-97B84C4FAF59\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T06:59:15+00:00",
      "cve": "CVE-2024-26987",
      "id": "CVE-2024-26987",
      "initial_release_date": "2024-05-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "64",
      "product_status:known_not_affected": "56",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26987.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:57:25Z",
      "cve": "CVE-2024-26987",
      "id": "CVE-2024-26987",
      "initial_release_date": "2024-05-03T02:09:42Z",
      "product_status:known_not_affected": "506",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26987",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26987.json",
      "version": "47"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-04T17:15:23.408Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26987\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-17T17:40:46.496934Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-17T17:40:47.711Z\"}}], \"cna\": {\"title\": \"mm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"a6b40850c442bf996e729e1d441d3dbc37cea171\", \"lessThan\": \"5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a6b40850c442bf996e729e1d441d3dbc37cea171\", \"lessThan\": \"882e1180c83f5b75bae03d0ccc31ccedfe5159de\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a6b40850c442bf996e729e1d441d3dbc37cea171\", \"lessThan\": \"49955b24002dc16a0ae2e83a57a2a6c863a1845c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a6b40850c442bf996e729e1d441d3dbc37cea171\", \"lessThan\": \"1983184c22dd84a4d95a71e5c6775c2638557dc7\", \"versionType\": \"git\"}], \"programFiles\": [\"mm/memory-failure.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.88\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.29\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"mm/memory-failure.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5ef7ba2799a3b5ed292b8f6407376e2c25ef002e\"}, {\"url\": \"https://git.kernel.org/stable/c/882e1180c83f5b75bae03d0ccc31ccedfe5159de\"}, {\"url\": \"https://git.kernel.org/stable/c/49955b24002dc16a0ae2e83a57a2a6c863a1845c\"}, {\"url\": \"https://git.kernel.org/stable/c/1983184c22dd84a4d95a71e5c6775c2638557dc7\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/memory-failure: fix deadlock when hugetlb_optimize_vmemmap is enabled\\n\\nWhen I did hard offline test with hugetlb pages, below deadlock occurs:\\n\\n======================================================\\nWARNING: possible circular locking dependency detected\\n6.8.0-11409-gf6cef5f8c37f #1 Not tainted\\n------------------------------------------------------\\nbash/46904 is trying to acquire lock:\\nffffffffabe68910 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_slow_dec+0x16/0x60\\n\\nbut task is already holding lock:\\nffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nwhich lock already depends on the new lock.\\n\\nthe existing dependency chain (in reverse order) is:\\n\\n-\u003e #1 (pcp_batch_high_lock){+.+.}-{3:3}:\\n       __mutex_lock+0x6c/0x770\\n       page_alloc_cpu_online+0x3c/0x70\\n       cpuhp_invoke_callback+0x397/0x5f0\\n       __cpuhp_invoke_callback_range+0x71/0xe0\\n       _cpu_up+0xeb/0x210\\n       cpu_up+0x91/0xe0\\n       cpuhp_bringup_mask+0x49/0xb0\\n       bringup_nonboot_cpus+0xb7/0xe0\\n       smp_init+0x25/0xa0\\n       kernel_init_freeable+0x15f/0x3e0\\n       kernel_init+0x15/0x1b0\\n       ret_from_fork+0x2f/0x50\\n       ret_from_fork_asm+0x1a/0x30\\n\\n-\u003e #0 (cpu_hotplug_lock){++++}-{0:0}:\\n       __lock_acquire+0x1298/0x1cd0\\n       lock_acquire+0xc0/0x2b0\\n       cpus_read_lock+0x2a/0xc0\\n       static_key_slow_dec+0x16/0x60\\n       __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n       dissolve_free_huge_page+0x211/0x260\\n       __page_handle_poison+0x45/0xc0\\n       memory_failure+0x65e/0xc70\\n       hard_offline_page_store+0x55/0xa0\\n       kernfs_fop_write_iter+0x12c/0x1d0\\n       vfs_write+0x387/0x550\\n       ksys_write+0x64/0xe0\\n       do_syscall_64+0xca/0x1e0\\n       entry_SYSCALL_64_after_hwframe+0x6d/0x75\\n\\nother info that might help us debug this:\\n\\n Possible unsafe locking scenario:\\n\\n       CPU0                    CPU1\\n       ----                    ----\\n  lock(pcp_batch_high_lock);\\n                               lock(cpu_hotplug_lock);\\n                               lock(pcp_batch_high_lock);\\n  rlock(cpu_hotplug_lock);\\n\\n *** DEADLOCK ***\\n\\n5 locks held by bash/46904:\\n #0: ffff98f6c3bb23f0 (sb_writers#5){.+.+}-{0:0}, at: ksys_write+0x64/0xe0\\n #1: ffff98f6c328e488 (\u0026of-\u003emutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0xf8/0x1d0\\n #2: ffff98ef83b31890 (kn-\u003eactive#113){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x100/0x1d0\\n #3: ffffffffabf9db48 (mf_mutex){+.+.}-{3:3}, at: memory_failure+0x44/0xc70\\n #4: ffffffffabf92ea8 (pcp_batch_high_lock){+.+.}-{3:3}, at: zone_pcp_disable+0x16/0x40\\n\\nstack backtrace:\\nCPU: 10 PID: 46904 Comm: bash Kdump: loaded Not tainted 6.8.0-11409-gf6cef5f8c37f #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x68/0xa0\\n check_noncircular+0x129/0x140\\n __lock_acquire+0x1298/0x1cd0\\n lock_acquire+0xc0/0x2b0\\n cpus_read_lock+0x2a/0xc0\\n static_key_slow_dec+0x16/0x60\\n __hugetlb_vmemmap_restore_folio+0x1b9/0x200\\n dissolve_free_huge_page+0x211/0x260\\n __page_handle_poison+0x45/0xc0\\n memory_failure+0x65e/0xc70\\n hard_offline_page_store+0x55/0xa0\\n kernfs_fop_write_iter+0x12c/0x1d0\\n vfs_write+0x387/0x550\\n ksys_write+0x64/0xe0\\n do_syscall_64+0xca/0x1e0\\n entry_SYSCALL_64_after_hwframe+0x6d/0x75\\nRIP: 0033:0x7fc862314887\\nCode: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24\\nRSP: 002b:00007fff19311268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\nRAX: ffffffffffffffda RBX: 000000000000000c RCX: 00007fc862314887\\nRDX: 000000000000000c RSI: 000056405645fe10 RDI: 0000000000000001\\nRBP: 000056405645fe10 R08: 00007fc8623d1460 R09: 000000007fffffff\\nR10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000c\\nR13: 00007fc86241b780 R14: 00007fc862417600 R15: 00007fc862416a00\\n\\nIn short, below scene breaks the \\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.88\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.29\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.8\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"5.18\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:01:32.990Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26987\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T17:15:23.408Z\", \"dateReserved\": \"2024-02-19T14:20:24.205Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-01T05:27:34.523Z\", \"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.