CVE-2026-45951bpf: Fix a potential use-after-free of BTF object
Updated under an hour ago ()
Does this affect you?
It affects Linux and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 76145f7255326761dafb76721a785799d8a00d5f before eac65c272f3b49021a843cba5107d63627395e0e; 76145f7255326761dafb76721a785799d8a00d5f builds before 9ff46ffeecdb1802d6e26183177935b948a12e7f; from 76145f7255326761dafb76721a785799d8a00d5f before ccd2d799ed4467c07f5ee18c2f5c59bcc990822c | CNA record |
linux linux_kernel linux:linux_kernel | from 6.14 before 6.18.14; from 6.19 before 6.19.4 | NVD |
References
- https://git.kernel.org/stable/c/eac65c272f3b49021a843cba5107d63627395e0epatch
- https://git.kernel.org/stable/c/9ff46ffeecdb1802d6e26183177935b948a12e7fpatch
- https://git.kernel.org/stable/c/ccd2d799ed4467c07f5ee18c2f5c59bcc990822cpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.