CVE-2020-36776

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-36776
In the Linux kernel, the following vulnerability has been resolved: thermal/drivers/cpufreq_cooling: Fix slab OOB issue Slab OOB issue is scanned by KASAN in cpu_power_to_freq(). If power is limited below the power of OPP0 in EM table, it will cause slab out-of-bound issue with negative array index. Return the lowest frequency if limited power cannot found a suitable OPP in EM table to fix this issue. Backtrace: [<ffffffd02d2a37f0>] die+0x104/0x5ac [<ffffffd02d2a5630>] bug_handler+0x64/0xd0 [<ffffffd02d288ce4>] brk_handler+0x160/0x258 [<ffffffd02d281e5c>] do_debug_exception+0x248/0x3f0 [<ffffffd02d284488>] el1_dbg+0x14/0xbc [<ffffffd02d75d1d4>] __kasan_report+0x1dc/0x1e0 [<ffffffd02d75c2e0>] kasan_report+0x10/0x20 [<ffffffd02d75def8>] __asan_report_load8_noabort+0x18/0x28 [<ffffffd02e6fce5c>] cpufreq_power2state+0x180/0x43c [<ffffffd02e6ead80>] power_actor_set_power+0x114/0x1d4 [<ffffffd02e6fac24>] allocate_power+0xaec/0xde0 [<ffffffd02e6f9f80>] power_allocator_throttle+0x3ec/0x5a4 [<ffffffd02e6ea888>] handle_thermal_trip+0x160/0x294 [<ffffffd02e6edd08>] thermal_zone_device_check+0xe4/0x154 [<ffffffd02d351cb4>] process_one_work+0x5e4/0xe28 [<ffffffd02d352f44>] worker_thread+0xa4c/0xfac [<ffffffd02d360124>] kthread+0x33c/0x358 [<ffffffd02d289940>] ret_from_fork+0xc/0x18

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/34ab17cc6c2c1ac93d7e5d53bb972df9a968f085 Patch
https://git.kernel.org/stable/c/6bf443acf6ca4f666d0e4225614ba9993a3aa1a9 Patch
https://git.kernel.org/stable/c/876a5f33e5d961d879c5436987c09b3d9ef70379 Patch
https://git.kernel.org/stable/c/c24a20912eef00587416628149c438e885eb1304 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:*:*:*:*:*:*:*:*
History

10 Apr 2024, 19:34

Type Values Removed Values Added
CWE CWE-129
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: Thermal/drivers/cpufreq_cooling: solucionar el problema de Slab OOB El problema de Slab OOB es escaneado por KASAN en cpu_power_to_freq(). Si la potencia se limita por debajo de la potencia de OPP0 en la tabla EM, provocará un problema de losa fuera de los límites con un índice de matriz negativo. Devuelve la frecuencia más baja si la potencia limitada no puede encontrar un OPP adecuado en la tabla EM para solucionar este problema. Seguimiento inverso: [] die+0x104/0x5ac [] bug_handler+0x64/0xd0 [] brk_handler+0x160/0x258 [] do_debug_exception+0x 248/0x3f0 [] el1_dbg+0x14 /0xbc [] __kasan_report+0x1dc/0x1e0 [] kasan_report+0x10/0x20 [] __asan_report_load8_noabort+0x18/0x28 [] cpufreq_power2state+0x180/0x43c [] power_actor_set_power+0x114 /0x1d4 [] allocate_power+0xaec/0xde0 [] power_allocator_throttle+0x3ec/0x5a4 [] handle_thermal_trip+0x160/0x294 [] térmico _zone_device_check+0xe4/0x154 [] proceso_one_work+0x5e4 /0xe28 [] work_thread+0xa4c/0xfac [] kthread+0x33c/0x358 [] ret_from_fork+0xc/0x18
References () https://git.kernel.org/stable/c/34ab17cc6c2c1ac93d7e5d53bb972df9a968f085 - () https://git.kernel.org/stable/c/34ab17cc6c2c1ac93d7e5d53bb972df9a968f085 - Patch
References () https://git.kernel.org/stable/c/6bf443acf6ca4f666d0e4225614ba9993a3aa1a9 - () https://git.kernel.org/stable/c/6bf443acf6ca4f666d0e4225614ba9993a3aa1a9 - Patch
References () https://git.kernel.org/stable/c/876a5f33e5d961d879c5436987c09b3d9ef70379 - () https://git.kernel.org/stable/c/876a5f33e5d961d879c5436987c09b3d9ef70379 - Patch
References () https://git.kernel.org/stable/c/c24a20912eef00587416628149c438e885eb1304 - () https://git.kernel.org/stable/c/c24a20912eef00587416628149c438e885eb1304 - Patch

27 Feb 2024, 19:04

Type Values Removed Values Added
New CVE
Information

Published : 2024-02-27 19:04

Updated : 2024-04-10 19:34

NVD link : CVE-2020-36776

Mitre link : CVE-2020-36776

CVE.ORG link : CVE-2020-36776

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-129

Improper Validation of Array Index