CVE-2024-50132
tracing/probes: Fix MAX_TRACE_ARGS limit handling
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
tracing/probes: Fix MAX_TRACE_ARGS limit handling
When creating a trace_probe we would set nr_args prior to truncating the
arguments to MAX_TRACE_ARGS. However, we would only initialize arguments
up to the limit.
This caused invalid memory access when attempting to set up probes with
more than 128 fetchargs.
BUG: kernel NULL pointer dereference, address: 0000000000000020
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0
Oops: Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 0 UID: 0 PID: 1769 Comm: cat Not tainted 6.11.0-rc7+ #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014
RIP: 0010:__set_print_fmt+0x134/0x330
Resolve the issue by applying the MAX_TRACE_ARGS limit earlier. Return
an error when there are too many arguments instead of silently
truncating.
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rastreo/sondas: Se corrige el manejo del límite MAX_TRACE_ARGS Al crear un trace_probe, estableceríamos nr_args antes de truncar los argumentos a MAX_TRACE_ARGS. Sin embargo, solo inicializaríamos los argumentos hasta el límite. Esto causaba un acceso no válido a la memoria al intentar configurar sondas con más de 128 fetchargs. ERROR: desreferencia de puntero NULL del kernel, dirección: 0000000000000020 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - página no presente PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 UID: 0 PID: 1769 Comm: cat No contaminado 6.11.0-rc7+ #8 Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-1.fc39 04/01/2014 RIP: 0010:__set_print_fmt+0x134/0x330 Resuelva el problema aplicando el límite MAX_TRACE_ARGS anteriormente. Devuelva un error cuando haya demasiados argumentos en lugar de truncarlos silenciosamente.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2024-10-21 CVE Reserved
- 2024-11-05 CVE Published
- 2024-11-05 CVE Updated
- 2024-11-06 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (4)
URL | Tag | Source |
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https://git.kernel.org/stable/c/035ba76014c096316fa809a46ce0a1b9af1cde0d | Vuln. Introduced |
URL | Date | SRC |
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URL | Date | SRC |
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Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.9 < 6.11.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.9 < 6.11.6" | en |
Affected
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.9 < 6.12-rc5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.9 < 6.12-rc5" | en |
Affected
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