Answer in brief
CVE-2023-54280 records a Critical severity (CVSS 9.8) vulnerability in cifs: fix potential race when tree connecting ipc. 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 9.8. 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 | >=c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e <536ec71ba060a02fabe8e22cecb82fe7b3a8708b || >=c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e <553476df55a111e6a66ad9155256aec0ec1b7ad0 || >=c88f7dcd6d6429197fc2fd87b54a894ffcd48e8e <ee20d7c6100752eaf2409d783f4f1449c29ea33d || 81d583baa5f1abd73c755ce1992929debd20b687 || >=5.15.81 <5.16 | 536ec71ba060a02fabe8e22cecb82fe7b3a8708b, 553476df55a111e6a66ad9155256aec0ec1b7ad0, ee20d7c6100752eaf2409d783f4f1449c29ea33d, 5.16 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 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: cifs: fix potential race when tree connecting ipc Protect access of TCP_Server_Info::hostname when building the ipc tree name as it might get freed in cifsd thread and thus causing an use-after-free bug in __tree_connect_dfs_target(). Also, while at it, update status of IPC tcon on success and then avoid any extra tree connects.
Quoted source text, attributed separately from HOL analysis.