CVE-2024-56701

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-56701
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: Fix dtl_access_lock to be a rw_semaphore The dtl_access_lock needs to be a rw_sempahore, a sleeping lock, because the code calls kmalloc() while holding it, which can sleep: # echo 1 > /proc/powerpc/vcpudispatch_stats BUG: sleeping function called from invalid context at include/linux/sched/mm.h:337 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 199, name: sh preempt_count: 1, expected: 0 3 locks held by sh/199: #0: c00000000a0743f8 (sb_writers#3){.+.+}-{0:0}, at: vfs_write+0x324/0x438 #1: c0000000028c7058 (dtl_enable_mutex){+.+.}-{3:3}, at: vcpudispatch_stats_write+0xd4/0x5f4 #2: c0000000028c70b8 (dtl_access_lock){+.+.}-{2:2}, at: vcpudispatch_stats_write+0x220/0x5f4 CPU: 0 PID: 199 Comm: sh Not tainted 6.10.0-rc4 #152 Hardware name: IBM pSeries (emulated by qemu) POWER9 (raw) 0x4e1202 0xf000005 of:SLOF,HEAD hv:linux,kvm pSeries Call Trace: dump_stack_lvl+0x130/0x148 (unreliable) __might_resched+0x174/0x410 kmem_cache_alloc_noprof+0x340/0x3d0 alloc_dtl_buffers+0x124/0x1ac vcpudispatch_stats_write+0x2a8/0x5f4 proc_reg_write+0xf4/0x150 vfs_write+0xfc/0x438 ksys_write+0x88/0x148 system_call_exception+0x1c4/0x5a0 system_call_common+0xf4/0x258

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/525e18f1ba7c2b098c8ba587fb397efb34a6574c Patch
https://git.kernel.org/stable/c/6956c0e7346ce1bbfc726755aa8da10d26e84276 Patch
https://git.kernel.org/stable/c/a246daa26b717e755ccc9061f47f7cd1c0b358dd Patch
https://git.kernel.org/stable/c/b125d0cf1adde7b2b47d7337fed7e9133eea3463 Patch
https://git.kernel.org/stable/c/cadae3a45d23aa4f6485938a67cbc47aaaa25e38 Patch
https://git.kernel.org/stable/c/f6ec133668757f84e5143f1eb141fd0b83778b9e Patch
https://git.kernel.org/stable/c/fa5b5ea257135e771b489c83a2e93b5935d0108e Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

06 Oct 2025, 17:38

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: powerpc/pseries: Se corrige que dtl_access_lock sea un rw_semaphore. El dtl_access_lock debe ser un rw_sempahore, un bloqueo inactivo, porque el código llama a kmalloc() mientras lo mantiene, lo que puede inactivar: # echo 1 > /proc/powerpc/vcpudispatch_stats ERROR: función inactiva llamada desde un contexto no válido en include/linux/sched/mm.h:337 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 199, name: sh preempt_count: 1, expected: 0 3 bloqueos mantenidos por sh/199: #0: c00000000a0743f8 (sb_writers#3){.+.+}-{0:0}, en: vfs_write+0x324/0x438 #1: c0000000028c7058 (dtl_enable_mutex){+.+.}-{3:3}, en: vcpudispatch_stats_write+0xd4/0x5f4 #2: c0000000028c70b8 (dtl_access_lock){+.+.}-{2:2}, en: vcpudispatch_stats_write+0x220/0x5f4 CPU: 0 PID: 199 Comm: sh No contaminado 6.10.0-rc4 #152 Nombre del hardware: IBM pSeries (emulado por qemu) POWER9 (sin procesar) 0x4e1202 0xf000005 de:SLOF,HEAD hv:linux,kvm Rastreo de llamadas de pSeries: dump_stack_lvl+0x130/0x148 (no confiable) __might_resched+0x174/0x410 kmem_cache_alloc_noprof+0x340/0x3d0 alloc_dtl_buffers+0x124/0x1ac vcpudispatch_stats_write+0x2a8/0x5f4 proc_reg_write+0xf4/0x150 vfs_write+0xfc/0x438 ksys_write+0x88/0x148 excepción_de_llamada_al_sistema+0x1c4/0x5a0 llamada_al_sistema_común+0xf4/0x258
References () https://git.kernel.org/stable/c/525e18f1ba7c2b098c8ba587fb397efb34a6574c - () https://git.kernel.org/stable/c/525e18f1ba7c2b098c8ba587fb397efb34a6574c - Patch
References () https://git.kernel.org/stable/c/6956c0e7346ce1bbfc726755aa8da10d26e84276 - () https://git.kernel.org/stable/c/6956c0e7346ce1bbfc726755aa8da10d26e84276 - Patch
References () https://git.kernel.org/stable/c/a246daa26b717e755ccc9061f47f7cd1c0b358dd - () https://git.kernel.org/stable/c/a246daa26b717e755ccc9061f47f7cd1c0b358dd - Patch
References () https://git.kernel.org/stable/c/b125d0cf1adde7b2b47d7337fed7e9133eea3463 - () https://git.kernel.org/stable/c/b125d0cf1adde7b2b47d7337fed7e9133eea3463 - Patch
References () https://git.kernel.org/stable/c/cadae3a45d23aa4f6485938a67cbc47aaaa25e38 - () https://git.kernel.org/stable/c/cadae3a45d23aa4f6485938a67cbc47aaaa25e38 - Patch
References () https://git.kernel.org/stable/c/f6ec133668757f84e5143f1eb141fd0b83778b9e - () https://git.kernel.org/stable/c/f6ec133668757f84e5143f1eb141fd0b83778b9e - Patch
References () https://git.kernel.org/stable/c/fa5b5ea257135e771b489c83a2e93b5935d0108e - () https://git.kernel.org/stable/c/fa5b5ea257135e771b489c83a2e93b5935d0108e - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE NVD-CWE-noinfo
First Time Linux linux Kernel
Linux

28 Dec 2024, 10:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-12-28 10:15

Updated : 2025-10-06 17:38

NVD link : CVE-2024-56701

Mitre link : CVE-2024-56701

CVE.ORG link : CVE-2024-56701

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
NVD-CWE-noinfo