5.5

CVE-2022-48770

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

In the Linux kernel, the following vulnerability has been resolved:

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

task_pt_regs() can return NULL on powerpc for kernel threads. This is
then used in __bpf_get_stack() to check for user mode, resulting in a
kernel oops. Guard against this by checking return value of
task_pt_regs() before trying to obtain the call chain.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.9 < 5.10.96
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.19
Linux ≫ Linux Kernel Version >= 5.16 < 5.16.5
Linux ≫ Linux Kernel Version5.17 Updaterc1
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.118
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/0bcd484587b3b3092e448d27dc369e347e1810c3
Patch
https://git.kernel.org/stable/c/b82ef4985a6d05e80f604624332430351df7b79a
Patch
https://git.kernel.org/stable/c/b992f01e66150fc5e90be4a96f5eb8e634c8249e
Patch
https://git.kernel.org/stable/c/ff6bdc205fd0a83bd365405d4e31fb5905826996
Patch