VULNERABILITY INTELLIGENCE

CVE-2022-48770

CVSS score5.5 MEDIUM
EPSS probability0.22%
CISA KEVNot currently listed
Published2024-06-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-476

Primary references