What is CVE-2022-48740?

CVE-2022-48740 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2024-06-20.

How severe is CVE-2022-48740?

High severity. CVSS v3 base score is 7.8 out of 10.

Double Free in Linux

CVE-2022-48740

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]

Vulnerability class: Double Free

EPSS: 0.002 (15.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 60abd3181db29ea81742106cc0ac2e27fd05b418, 5.7, 0
Linux Linux_kernel — versions 5.17

Weakness classification (CWE)

CWE-415 — Double Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2022-48740?: CVE-2022-48740 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2024-06-20.
How severe is CVE-2022-48740?: High severity. CVSS v3 base score is 7.8 out of 10.