CVE-2024-40954 (GCVE-0-2024-40954)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:31 – Updated: 2026-05-11 20:23
VLAI?
Title
net: do not leave a dangling sk pointer, when socket creation fails
Summary
In the Linux kernel, the following vulnerability has been resolved: net: do not leave a dangling sk pointer, when socket creation fails It is possible to trigger a use-after-free by: * attaching an fentry probe to __sock_release() and the probe calling the bpf_get_socket_cookie() helper * running traceroute -I 1.1.1.1 on a freshly booted VM A KASAN enabled kernel will log something like below (decoded and stripped): ================================================================== BUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) Read of size 8 at addr ffff888007110dd8 by task traceroute/299 CPU: 2 PID: 299 Comm: traceroute Tainted: G E 6.10.0-rc2+ #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl (lib/dump_stack.c:117 (discriminator 1)) print_report (mm/kasan/report.c:378 mm/kasan/report.c:488) ? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) kasan_report (mm/kasan/report.c:603) ? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) bpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092) bpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e bpf_trampoline_6442506592+0x47/0xaf __sock_release (net/socket.c:652) __sock_create (net/socket.c:1601) ... Allocated by task 299 on cpu 2 at 78.328492s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) __kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338) kmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007) sk_prot_alloc (net/core/sock.c:2075) sk_alloc (net/core/sock.c:2134) inet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252) __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Freed by task 299 on cpu 2 at 78.328502s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) kasan_save_free_info (mm/kasan/generic.c:582) poison_slab_object (mm/kasan/common.c:242) __kasan_slab_free (mm/kasan/common.c:256) kmem_cache_free (mm/slub.c:4437 mm/slub.c:4511) __sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208) inet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252) __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Fix this by clearing the struct socket reference in sk_common_release() to cover all protocol families create functions, which may already attached the reference to the sk object with sock_init_data().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd , < 78e4aa528a7b1204219d808310524344f627d069 (git)
Affected: c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd , < 893eeba94c40d513cd0fe6539330ebdaea208c0e (git)
Affected: c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd , < 454c454ed645fed051216b79622f7cb69c1638f5 (git)
Affected: c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd , < 5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9 (git)
Affected: c5dbb89fc2ac013afe67b9e4fcb3743c02b567cd , < 6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2 (git)
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Linux Linux Affected: 5.12
Unaffected: 0 , < 5.12 (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.96 , ≤ 6.1.* (semver)
Unaffected: 6.6.36 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.12\", \"versionEndExcluding\": \"5.15.162\", \"matchCriteriaId\": \"BD852924-11EF-4EBB-B88D-50A6300754D3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.96\", \"matchCriteriaId\": \"61E887B4-732A-40D2-9983-CC6F281EBFB7\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.36\", \"matchCriteriaId\": \"E1046C95-860A-45B0-B718-2B29F65BFF10\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.9.7\", \"matchCriteriaId\": \"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"331C2F14-12C7-45D5-893D-8C52EE38EA10\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"3173713D-909A-4DD3-9DD4-1E171EB057EE\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: do not leave a dangling sk pointer, when socket creation fails\\n\\nIt is possible to trigger a use-after-free by:\\n  * attaching an fentry probe to __sock_release() and the probe calling the\\n    bpf_get_socket_cookie() helper\\n  * running traceroute -I 1.1.1.1 on a freshly booted VM\\n\\nA KASAN enabled kernel will log something like below (decoded and stripped):\\n==================================================================\\nBUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nRead of size 8 at addr ffff888007110dd8 by task traceroute/299\\n\\nCPU: 2 PID: 299 Comm: traceroute Tainted: G            E      6.10.0-rc2+ #2\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\ndump_stack_lvl (lib/dump_stack.c:117 (discriminator 1))\\nprint_report (mm/kasan/report.c:378 mm/kasan/report.c:488)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_report (mm/kasan/report.c:603)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)\\n__sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nbpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092)\\nbpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e\\nbpf_trampoline_6442506592+0x47/0xaf\\n__sock_release (net/socket.c:652)\\n__sock_create (net/socket.c:1601)\\n...\\nAllocated by task 299 on cpu 2 at 78.328492s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\n__kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338)\\nkmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007)\\nsk_prot_alloc (net/core/sock.c:2075)\\nsk_alloc (net/core/sock.c:2134)\\ninet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFreed by task 299 on cpu 2 at 78.328502s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\nkasan_save_free_info (mm/kasan/generic.c:582)\\npoison_slab_object (mm/kasan/common.c:242)\\n__kasan_slab_free (mm/kasan/common.c:256)\\nkmem_cache_free (mm/slub.c:4437 mm/slub.c:4511)\\n__sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208)\\ninet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFix this by clearing the struct socket reference in sk_common_release() to cover\\nall protocol families create functions, which may already attached the\\nreference to the sk object with sock_init_data().\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: no deja un puntero sk colgando cuando falla la creaci\\u00f3n del socket. Es posible activar un use-after-free: * adjuntando una sonda fentry a __sock_release() y el sonda que llama al asistente bpf_get_socket_cookie() * ejecuta traceroute -I 1.1.1.1 en una m\\u00e1quina virtual reci\\u00e9n iniciada. Un kernel habilitado para KASAN registrar\\u00e1 algo como lo siguiente (decodificado y eliminado): =============== ==================================================== = ERROR: KASAN: slab-use-after-free en __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include /linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) Lectura de tama\\u00f1o 8 en la direcci\\u00f3n ffff888007110dd8 mediante tarea traceroute/299 CPU: 2 PID: 299 Comm: traceroute Contaminado: GE 6.10.0- rc2+ #2 Nombre del hardware: PC est\\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl (lib/dump_stack.c:117 ( discriminador 1)) print_report (mm/kasan/report.c:378 mm/kasan/report.c:488)? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 neto /core/sock_diag.c:29) kasan_report (mm/kasan/report.c:603)? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 neto /core/sock_diag.c:29) kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include /linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) bpf_get_socket_ptr_cookie (./arch/x86/include/asm /preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092) bpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e bpf_trampoline_6442506592+0x47/0xaf __ calcet\\u00edn_release (net/ socket.c:652) __sock_create (net/socket.c:1601) ... Asignado por la tarea 299 en la CPU 2 en 78.328492s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common. c:68) __kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338) kmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007) sk_prot_alloc (net/core/sock.c:2075) sk_alloc (net/core/sock.c:2134) inet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252) __sock_create (net/socket. c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c: 52 arch/x86/entry/common.c:83) Entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Liberado por la tarea 299 en la CPU 2 a las 78.328502s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) kasan_save_free_info (mm/kasan/generic.c:582) veneno_slab_object (mm/kasan/common.c:242) __kasan_slab_free (mm/kasan/common.c:256) kmem_cache_free ( mm/slub.c:4437 mm/slub.c:4511) __sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208) inet_create (net/ipv4/af_inet.c:397 net/ipv4 /af_inet.c:252) __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718 ) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) Entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Solucione este problema borrando la referencia del socket de estructura en sk_common_release () para cubrir todas las familias de protocolos, cree funciones, que pueden ya adjuntar la referencia al objeto sk con sock_init_data().\"}]",
      "id": "CVE-2024-40954",
      "lastModified": "2024-11-21T09:31:56.400",
      "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:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-07-12T13:15:17.627",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/454c454ed645fed051216b79622f7cb69c1638f5\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/78e4aa528a7b1204219d808310524344f627d069\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/893eeba94c40d513cd0fe6539330ebdaea208c0e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/454c454ed645fed051216b79622f7cb69c1638f5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/78e4aa528a7b1204219d808310524344f627d069\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/893eeba94c40d513cd0fe6539330ebdaea208c0e\", \"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-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40954\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:17.627\",\"lastModified\":\"2025-11-03T22:17:17.137\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: do not leave a dangling sk pointer, when socket creation fails\\n\\nIt is possible to trigger a use-after-free by:\\n  * attaching an fentry probe to __sock_release() and the probe calling the\\n    bpf_get_socket_cookie() helper\\n  * running traceroute -I 1.1.1.1 on a freshly booted VM\\n\\nA KASAN enabled kernel will log something like below (decoded and stripped):\\n==================================================================\\nBUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nRead of size 8 at addr ffff888007110dd8 by task traceroute/299\\n\\nCPU: 2 PID: 299 Comm: traceroute Tainted: G            E      6.10.0-rc2+ #2\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\ndump_stack_lvl (lib/dump_stack.c:117 (discriminator 1))\\nprint_report (mm/kasan/report.c:378 mm/kasan/report.c:488)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_report (mm/kasan/report.c:603)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)\\n__sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nbpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092)\\nbpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e\\nbpf_trampoline_6442506592+0x47/0xaf\\n__sock_release (net/socket.c:652)\\n__sock_create (net/socket.c:1601)\\n...\\nAllocated by task 299 on cpu 2 at 78.328492s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\n__kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338)\\nkmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007)\\nsk_prot_alloc (net/core/sock.c:2075)\\nsk_alloc (net/core/sock.c:2134)\\ninet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFreed by task 299 on cpu 2 at 78.328502s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\nkasan_save_free_info (mm/kasan/generic.c:582)\\npoison_slab_object (mm/kasan/common.c:242)\\n__kasan_slab_free (mm/kasan/common.c:256)\\nkmem_cache_free (mm/slub.c:4437 mm/slub.c:4511)\\n__sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208)\\ninet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFix this by clearing the struct socket reference in sk_common_release() to cover\\nall protocol families create functions, which may already attached the\\nreference to the sk object with sock_init_data().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: no deja un puntero sk colgando cuando falla la creaci\u00f3n del socket. Es posible activar un use-after-free: * adjuntando una sonda fentry a __sock_release() y el sonda que llama al asistente bpf_get_socket_cookie() * ejecuta traceroute -I 1.1.1.1 en una m\u00e1quina virtual reci\u00e9n iniciada. Un kernel habilitado para KASAN registrar\u00e1 algo como lo siguiente (decodificado y eliminado): =============== ==================================================== = ERROR: KASAN: slab-use-after-free en __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include /linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff888007110dd8 mediante tarea traceroute/299 CPU: 2 PID: 299 Comm: traceroute Contaminado: GE 6.10.0- rc2+ #2 Nombre del hardware: PC est\u00e1ndar QEMU (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 01/04/2014 Seguimiento de llamadas:  dump_stack_lvl (lib/dump_stack.c:117 ( discriminador 1)) print_report (mm/kasan/report.c:378 mm/kasan/report.c:488)? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 neto /core/sock_diag.c:29) kasan_report (mm/kasan/report.c:603)? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 neto /core/sock_diag.c:29) kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include /linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29) bpf_get_socket_ptr_cookie (./arch/x86/include/asm /preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092) bpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e bpf_trampoline_6442506592+0x47/0xaf __ calcet\u00edn_release (net/ socket.c:652) __sock_create (net/socket.c:1601) ... Asignado por la tarea 299 en la CPU 2 en 78.328492s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common. c:68) __kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338) kmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007) sk_prot_alloc (net/core/sock.c:2075) sk_alloc (net/core/sock.c:2134) inet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252) __sock_create (net/socket. c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718) do_syscall_64 (arch/x86/entry/common.c: 52 arch/x86/entry/common.c:83) Entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Liberado por la tarea 299 en la CPU 2 a las 78.328502s: kasan_save_stack (mm/kasan/common.c:48) kasan_save_track (mm/kasan/common.c:68) kasan_save_free_info (mm/kasan/generic.c:582) veneno_slab_object (mm/kasan/common.c:242) __kasan_slab_free (mm/kasan/common.c:256) kmem_cache_free ( mm/slub.c:4437 mm/slub.c:4511) __sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208) inet_create (net/ipv4/af_inet.c:397 net/ipv4 /af_inet.c:252) __sock_create (net/socket.c:1572) __sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706) __x64_sys_socket (net/socket.c:1718 ) do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) Entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) Solucione este problema borrando la referencia del socket de estructura en sk_common_release () para cubrir todas las familias de protocolos, cree funciones, que pueden ya adjuntar la referencia al objeto sk con sock_init_data().\"}],\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.12\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"BD852924-11EF-4EBB-B88D-50A6300754D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.96\",\"matchCriteriaId\":\"61E887B4-732A-40D2-9983-CC6F281EBFB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.36\",\"matchCriteriaId\":\"E1046C95-860A-45B0-B718-2B29F65BFF10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.7\",\"matchCriteriaId\":\"0A047AF2-94AC-4A3A-B32D-6AB930D8EF1C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2EBB4392-5FA6-4DA9-9772-8F9C750109FA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"331C2F14-12C7-45D5-893D-8C52EE38EA10\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3173713D-909A-4DD3-9DD4-1E171EB057EE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.10:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"79F18AFA-40F7-43F0-BA30-7BDB65F918B9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/454c454ed645fed051216b79622f7cb69c1638f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78e4aa528a7b1204219d808310524344f627d069\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/893eeba94c40d513cd0fe6539330ebdaea208c0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/454c454ed645fed051216b79622f7cb69c1638f5\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/78e4aa528a7b1204219d808310524344f627d069\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/893eeba94c40d513cd0fe6539330ebdaea208c0e\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-07-15T06:52:08.037Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: do not leave a dangling sk pointer, when socket creation fails\\n\\nIt is possible to trigger a use-after-free by:\\n  * attaching an fentry probe to __sock_release() and the probe calling the\\n    bpf_get_socket_cookie() helper\\n  * running traceroute -I 1.1.1.1 on a freshly booted VM\\n\\nA KASAN enabled kernel will log something like below (decoded and stripped):\\n==================================================================\\nBUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nRead of size 8 at addr ffff888007110dd8 by task traceroute/299\\n\\nCPU: 2 PID: 299 Comm: traceroute Tainted: G            E      6.10.0-rc2+ #2\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\\nCall Trace:\\n \u003cTASK\u003e\\ndump_stack_lvl (lib/dump_stack.c:117 (discriminator 1))\\nprint_report (mm/kasan/report.c:378 mm/kasan/report.c:488)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_report (mm/kasan/report.c:603)\\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nkasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)\\n__sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\\nbpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092)\\nbpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e\\nbpf_trampoline_6442506592+0x47/0xaf\\n__sock_release (net/socket.c:652)\\n__sock_create (net/socket.c:1601)\\n...\\nAllocated by task 299 on cpu 2 at 78.328492s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\n__kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338)\\nkmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007)\\nsk_prot_alloc (net/core/sock.c:2075)\\nsk_alloc (net/core/sock.c:2134)\\ninet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFreed by task 299 on cpu 2 at 78.328502s:\\nkasan_save_stack (mm/kasan/common.c:48)\\nkasan_save_track (mm/kasan/common.c:68)\\nkasan_save_free_info (mm/kasan/generic.c:582)\\npoison_slab_object (mm/kasan/common.c:242)\\n__kasan_slab_free (mm/kasan/common.c:256)\\nkmem_cache_free (mm/slub.c:4437 mm/slub.c:4511)\\n__sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208)\\ninet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)\\n__sock_create (net/socket.c:1572)\\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\\n__x64_sys_socket (net/socket.c:1718)\\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nFix this by clearing the struct socket reference in sk_common_release() to cover\\nall protocol families create functions, which may already attached the\\nreference to the sk object with sock_init_data().\"}], \"affected\": [{\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"unaffected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"net/core/sock.c\"], \"versions\": [{\"version\": \"c5dbb89fc2ac\", \"lessThan\": \"78e4aa528a7b\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c5dbb89fc2ac\", \"lessThan\": \"893eeba94c40\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c5dbb89fc2ac\", \"lessThan\": \"454c454ed645\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c5dbb89fc2ac\", \"lessThan\": \"5dfe2408fd7d\", \"status\": \"affected\", \"versionType\": \"git\"}, {\"version\": \"c5dbb89fc2ac\", \"lessThan\": \"6cd4a78d962b\", \"status\": \"affected\", \"versionType\": \"git\"}]}, {\"product\": \"Linux\", \"vendor\": \"Linux\", \"defaultStatus\": \"affected\", \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"programFiles\": [\"net/core/sock.c\"], \"versions\": [{\"version\": \"5.12\", \"status\": \"affected\"}, {\"version\": \"0\", \"lessThan\": \"5.12\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"5.15.162\", \"lessThanOrEqual\": \"5.15.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.1.96\", \"lessThanOrEqual\": \"6.1.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.6.36\", \"lessThanOrEqual\": \"6.6.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.9.7\", \"lessThanOrEqual\": \"6.9.*\", \"status\": \"unaffected\", \"versionType\": \"custom\"}, {\"version\": \"6.10\", \"lessThanOrEqual\": \"*\", \"status\": \"unaffected\", \"versionType\": \"original_commit_for_fix\"}]}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/78e4aa528a7b1204219d808310524344f627d069\"}, {\"url\": \"https://git.kernel.org/stable/c/893eeba94c40d513cd0fe6539330ebdaea208c0e\"}, {\"url\": \"https://git.kernel.org/stable/c/454c454ed645fed051216b79622f7cb69c1638f5\"}, {\"url\": \"https://git.kernel.org/stable/c/5dfe2408fd7dc4d2e7ac38a116ff0a37b1cfd3b9\"}, {\"url\": \"https://git.kernel.org/stable/c/6cd4a78d962bebbaf8beb7d2ead3f34120e3f7b2\"}], \"title\": \"net: do not leave a dangling sk pointer, when socket creation fails\", \"x_generator\": {\"engine\": \"bippy-c9c4e1df01b2\"}}, \"adp\": [{\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40954\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:03:48.944366Z\"}}}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2024-09-11T12:42:22.455Z\"}, \"title\": \"CISA ADP Vulnrichment\"}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40954\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Linux\", \"dateReserved\": \"2024-07-12T12:17:45.592Z\", \"datePublished\": \"2024-07-12T12:31:57.517Z\", \"dateUpdated\": \"2024-08-02T04:39:55.910Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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

Author Source Type Date Other

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.