Riskcovery

CVE-2022-48770

bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack()

State
Published
Severity
Not scored
Published
Jun 20, 2024
Updated
May 11, 2026
Reserved
Jun 20, 2024

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 to before ff6bdc205fd0a83bd365405d4e31fb5905826996Affected
  • fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 to before 0bcd484587b3b3092e448d27dc369e347e1810c3Affected
  • fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 to before b82ef4985a6d05e80f604624332430351df7b79aAffected
  • fa28dcb82a38f8e3993b0fae9106b1a80b59e4f0 to before b992f01e66150fc5e90be4a96f5eb8e634c8249eAffected
LinuxLinux
  • 5.9Affected
  • before 5.9Not affected
  • 5.10.96 through 5.10.*Not affected
  • 5.15.19 through 5.15.*Not affected
  • 5.16.5 through 5.16.*Not affected
  • 5.17 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.