net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference
CVSS score
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EPSS probability
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Risk score
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Published
16 h ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
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Evidence confidence
%63
Short explanation
A NULL pointer dereference vulnerability exists in the Linux kernel net/mlx5e component during AF_XDP TX queue teardown due to a missing CQE.
This vulnerability involves a NULL pointer issue in the Linux kernel network infrastructure that can lead to instability or unexpected conditions.
What should be done?
- Follow vendor advisories
- Apply kernel updates
Chain of evidence and sources
XSK TX kuyruğunun kapatılması sırasında bekleyen tanımlayıcılar CQE olmadan tamamlanır.
NULL CQE nesnesi mlx5e_xsk_fill_timestamp() fonksiyonuna iletilerek başvur hatasına yol açar.
Show the technical text from the sources
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference During XSK TX queue teardown, outstanding descriptors are completed without a CQE. If one requested a TX timestamp, the completion path passes that NULL CQE to mlx5e_xsk_fill_timestamp(), which dereferences it. Return zero when no CQE is available, indicating that teardown did not produce a TX timestamp.
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
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| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
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Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-98791 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-98791 weaknesses.
Official Sources and Advisories
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