CVE-2022-49010

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  2. Vulnerabilities (CVE)
  3. CVE-2022-49010

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

I

n the Linux kernel, the following vulnerability has been resolved: hwmon: (coretemp) Check for null before removing sysfs attrs If coretemp_add_core() gets an error then pdata->core_data[indx] is already NULL and has been kfreed. Don't pass that to sysfs_remove_group() as that will crash in sysfs_remove_group(). [Shortened for readability] [91854.020159] sysfs: cannot create duplicate filename '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' <cpu offline> [91855.126115] BUG: kernel NULL pointer dereference, address: 0000000000000188 [91855.165103] #PF: supervisor read access in kernel mode [91855.194506] #PF: error_code(0x0000) - not-present page [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Call Trace: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Fix this by checking for NULL first.

References
Link Resource
https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f Patch
https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c Patch
https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 Patch
https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 Patch
https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a Patch
https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b Patch
https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b Patch
https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 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:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*
History

24 Oct 2024, 19:03

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-476
References () https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f - () https://git.kernel.org/stable/c/070d5ea4a0592a37ad96ce7f7b6b024f90bb009f - Patch
References () https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c - () https://git.kernel.org/stable/c/280110db1a7d62ad635b103bafc3ae96e8bef75c - Patch
References () https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 - () https://git.kernel.org/stable/c/7692700ac818866d138a8de555130a6e70e6ac16 - Patch
References () https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 - () https://git.kernel.org/stable/c/89eecabe6a47403237f45aafd7d24f93cb973653 - Patch
References () https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a - () https://git.kernel.org/stable/c/a89ff5f5cc64b9fe7a992cf56988fd36f56ca82a - Patch
References () https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b - () https://git.kernel.org/stable/c/ae6c8b6e5d5628df1c475c0a8fca1465e205c95b - Patch
References () https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b - () https://git.kernel.org/stable/c/f06e0cd01eab954bd5f2190c9faa79bb5357e05b - Patch
References () https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 - () https://git.kernel.org/stable/c/fb503d077ff7b43913503eaf72995d1239028b99 - Patch
CPE cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*

23 Oct 2024, 15:13

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: hwmon: (coretemp) Verificar si hay valores nulos antes de eliminar los atributos de sysfs Si coretemp_add_core() obtiene un error, entonces pdata-&gt;core_data[indx] ya es NULL y se ha liberado. No pase eso a sysfs_remove_group() ya que eso bloqueará sysfs_remove_group(). [Abreviado para facilitar la lectura] [91854.020159] sysfs: no se puede crear un nombre de archivo duplicado '/devices/platform/coretemp.0/hwmon/hwmon2/temp20_label' [91855.126115] ERROR: desreferencia de puntero NULL del kernel, dirección: 0000000000000188 [91855.165103] #PF: acceso de lectura del supervisor en modo kernel [91855.194506] #PF: error_code(0x0000) - página no presente [91855.224445] PGD 0 P4D 0 [91855.238508] Oops: 0000 [#1] PREEMPT SMP PTI ... [91855.342716] RIP: 0010:sysfs_remove_group+0xc/0x80 ... [91855.796571] Seguimiento de llamadas: [91855.810524] coretemp_cpu_offline+0x12b/0x1dd [coretemp] [91855.841738] ? coretemp_cpu_online+0x180/0x180 [coretemp] [91855.871107] cpuhp_invoke_callback+0x105/0x4b0 [91855.893432] cpuhp_thread_fun+0x8e/0x150 ... Solucione esto comprobando primero si es NULL.

21 Oct 2024, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-10-21 20:15

Updated : 2024-10-24 19:03

NVD link : CVE-2022-49010

Mitre link : CVE-2022-49010

CVE.ORG link : CVE-2022-49010

JSON object : View

Products Affected

linux

CWE
CWE-476

NULL Pointer Dereference