CVEvulnerability

CVE-2022-48770

5.5 MEDIUM Published 2024-06-20 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-06-20
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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.

Affected configurations

• linux linux kernel (>= 5.9 < 5.10.96) • linux linux kernel (>= 5.11 < 5.15.19) • linux linux kernel (>= 5.16 < 5.16.5) • linux linux kernel 5.17

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References