CVE-2026-43215High· 8.8▾ TwilightIn 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 intr…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.4%
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.
Linux >= d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 953953abb66e52c224057ab91e404284fefeab62Linux >= d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 601dd3b79769b38d30b693c40afdb2a4b7edf9d0Linux >= d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136Linux >= d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 8c59eeeeffa1524ef57e173a89a1a3ff539888d5Linux >= d7d7a66aacd6fd8ca57baf08a7bac5421282f6f8 < 96c4af418586ee9a6aab61738644366426e05316Linux 6.0Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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