Answer in brief
CVE-2026-45951 records a High severity (CVSS 7.8) vulnerability in bpf: Fix a potential use-after-free of BTF object. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=76145f7255326761dafb76721a785799d8a00d5f <eac65c272f3b49021a843cba5107d63627395e0e || >=76145f7255326761dafb76721a785799d8a00d5f <9ff46ffeecdb1802d6e26183177935b948a12e7f || >=76145f7255326761dafb76721a785799d8a00d5f <ccd2d799ed4467c07f5ee18c2f5c59bcc990822c | eac65c272f3b49021a843cba5107d63627395e0e, 9ff46ffeecdb1802d6e26183177935b948a12e7f, ccd2d799ed4467c07f5ee18c2f5c59bcc990822c |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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)
Quoted source text, attributed separately from HOL analysis.