CVE-2022-48740

HighCVSS 7.8/10Last modified Jun 17, 2026

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]

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-415

Affected software

VendorProductVersions
LinuxLinux>= 60abd3181db29ea81742106cc0ac2e27fd05b418, < f446089a268c8fc6908488e991d28a9b936293db; >= 60abd3181db29ea81742106cc0ac2e27fd05b418, < 70caa32e6d81f45f0702070c0e4dfe945e92fbd7; >= 60abd3181db29ea81742106cc0ac2e27fd05b418, < 7ed9cbf7ac0d4ed86b356e1b944304ae9ee450d4; >= 60abd3181db29ea81742106cc0ac2e27fd05b418, < 186edf7e368c40d06cf727a1ad14698ea67b74ad
LinuxLinux5.7

References

Timeline

Published
Jun 20, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2022-48740: High severity, CVSS 7.8 | Vulnix