CVE-2026-45951

HIGH EPSS 2.5%
Published May 27, 20261mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published May 27, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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)

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 2

VendorProductVersionRange
linuxlinux_kernel*≥6.14  –  <6.18.14
linuxlinux_kernel*≥6.19  –  <6.19.4

References 3

  • git.kernel.org https://git.kernel.org/stable/c/9ff46ffeecdb1802d6e26183177935b948a12e7f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccd2d799ed4467c07f5ee18c2f5c59bcc990822c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eac65c272f3b49021a843cba5107d63627395e0e
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/9ff46ffeecdb1802d6e26183177935b948a12e7f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ccd2d799ed4467c07f5ee18c2f5c59bcc990822c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eac65c272f3b49021a843cba5107d63627395e0e
    Patch