Answer in brief
CVE-2026-43215 records a High severity (CVSS 8.8) vulnerability in cifs: Fix locking usage for tcon fields. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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 8.8. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <953953abb66e52c224057ab91e404284fefeab62 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <601dd3b79769b38d30b693c40afdb2a4b7edf9d0 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <8c59eeeeffa1524ef57e173a89a1a3ff539888d5 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <96c4af418586ee9a6aab61738644366426e05316 | 953953abb66e52c224057ab91e404284fefeab62, 601dd3b79769b38d30b693c40afdb2a4b7edf9d0, 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136, 8c59eeeeffa1524ef57e173a89a1a3ff539888d5, 96c4af418586ee9a6aab61738644366426e05316 |
| Linux/Linuxgeneric | 6.0 | Not reported |
| Linux/Linuxgeneric | >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <92d197ef7e9bb4994dae2bb17c2f19fa09d219a2 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <953953abb66e52c224057ab91e404284fefeab62 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <601dd3b79769b38d30b693c40afdb2a4b7edf9d0 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <8c59eeeeffa1524ef57e173a89a1a3ff539888d5 || >=d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 <96c4af418586ee9a6aab61738644366426e05316 | 92d197ef7e9bb4994dae2bb17c2f19fa09d219a2, 953953abb66e52c224057ab91e404284fefeab62, 601dd3b79769b38d30b693c40afdb2a4b7edf9d0, 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136, 8c59eeeeffa1524ef57e173a89a1a3ff539888d5, 96c4af418586ee9a6aab61738644366426e05316 |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 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 locking usage for tcon fields We used to use the cifs_tcp_ses_lock to protect a lot of objects that are not just the server, ses or tcon lists. We later introduced srv_lock, ses_lock and tc_lock to protect fields within the corresponding structs. This was done to provide a more granular protection and avoid unnecessary serialization. There were still a couple of uses of cifs_tcp_ses_lock to provide tcon fields. In this patch, I've replaced them with tc_lock.
Quoted source text, attributed separately from HOL analysis.