Vulnerability in Linux

CVE-2026-23151

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix memory leak in set_ssp_complete Fix memory leak in set_ssp_complete() where mgmt_pending_cmd structures are not freed after being removed from the pending list. Commit 302a1f674c00 ("Bluetooth: MGMT: Fix possible UAFs") replaced mgmt_pending_foreach() calls with individual command handling but missed adding mgmt_pending_free() calls in both error and success paths of set_ssp_complete(). Other completion functions like set_le_complete() were fixed correctly in the same commit. This causes a memory leak of the mgmt_pending_cmd structure and its associated parameter data for each SSP command that completes. Add the missing mgmt_pending_free(cmd) calls in both code paths to fix the memory leak. Also fix the same issue in set_advertising_complete().

EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Linux — versions 6.18.9, d71b98f253b079cbadc83266383f26fe7e9e103b, 302a1f674c00dd5581ab8e493ef44767c5101aab
  • Linux Linux_kernel — versions 6.17, 6.19

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-23151?
CVE-2026-23151 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2026-02-14.
How severe is CVE-2026-23151?
Medium severity. CVSS v3 base score is 5.5 out of 10.