CVE-2026-45951

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix a potential use-after-free of BTF object

Refcounting in the check_pseudo_btf_id() function is incorrect: the __check_pseudo_btf_id() function might get called with a zero refcounted btf. Fix this, and patch related code accordingly.

v3: rephrase a comment (AI) v2: fix a refcount leak introduced in v1 (AI)

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-416

Affected software

VendorProductVersions
LinuxLinux>= 76145f7255326761dafb76721a785799d8a00d5f, < eac65c272f3b49021a843cba5107d63627395e0e; >= 76145f7255326761dafb76721a785799d8a00d5f, < 9ff46ffeecdb1802d6e26183177935b948a12e7f; >= 76145f7255326761dafb76721a785799d8a00d5f, < ccd2d799ed4467c07f5ee18c2f5c59bcc990822c
LinuxLinux6.14

References

Timeline

Published
May 27, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2026-45951: High severity, CVSS 7.8 | Vulnix