Answer in brief
CVE-2023-53398 records a High severity (CVSS 7.8) vulnerability in mlx5: fix possible ptp queue fifo use-after-free. 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 | >=58a518948f60153e8f6cb8361d2712aa3a1af94a <52e6e7a0bc04c85012a9251c7cf2d444a77eb966 || >=58a518948f60153e8f6cb8361d2712aa3a1af94a <6afdedc4e66e3846ce497744f01b95c34bf39d21 || >=58a518948f60153e8f6cb8361d2712aa3a1af94a <3a50cf1e8e5157b82268eee7e330dbe5736a0948 | 52e6e7a0bc04c85012a9251c7cf2d444a77eb966, 6afdedc4e66e3846ce497744f01b95c34bf39d21, 3a50cf1e8e5157b82268eee7e330dbe5736a0948 |
| Linux/Linuxgeneric | 6.0 | Not reported |
Published upstream
Sep 18, 2025
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: mlx5: fix possible ptp queue fifo use-after-free Fifo indexes are not checked during pop operations and it leads to potential use-after-free when poping from empty queue. Such case was possible during re-sync action. WARN_ON_ONCE covers future cases. There were out-of-order cqe spotted which lead to drain of the queue and use-after-free because of lack of fifo pointers check. Special check and counter are added to avoid resync operation if SKB could not exist in the fifo because of OOO cqe (skb_id must be between consumer and producer index).
Quoted source text, attributed separately from HOL analysis.