Riskcovery

CVE-2022-48740

selinux: fix double free of cond_list on error paths

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:

selinux: fix double free of cond_list on error paths

On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop.

Also consistently reset the cond_list pointer to NULL after freeing.

[PM: fix line lengths in the description]

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 60abd3181db29ea81742106cc0ac2e27fd05b418 to before f446089a268c8fc6908488e991d28a9b936293dbAffected
  • 60abd3181db29ea81742106cc0ac2e27fd05b418 to before 70caa32e6d81f45f0702070c0e4dfe945e92fbd7Affected
  • 60abd3181db29ea81742106cc0ac2e27fd05b418 to before 7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4Affected
  • 60abd3181db29ea81742106cc0ac2e27fd05b418 to before 186edf7e368c40d06cf727a1ad14698ea67b74adAffected
LinuxLinux
  • 5.7Affected
  • before 5.7Not affected
  • 5.10.99 through 5.10.*Not affected
  • 5.15.22 through 5.15.*Not affected
  • 5.16.8 through 5.16.*Not affected
  • 5.17 and laterNot affected

References

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