CVE-2026-43215cifs: Fix locking usage for tcon fields
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 before 953953abb66e52c224057ab91e404284fefeab62; from d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 before 601dd3b79769b38d30b693c40afdb2a4b7edf9d0; from d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 before 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136; from d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 before 8c59eeeeffa1524ef57e173a89a1a3ff539888d5; from d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 before 96c4af418586ee9a6aab61738644366426e05316 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.0 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6 | NVD |
References
- https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62patch
- https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0patch
- https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136patch
- https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5patch
- https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.