CVE-2026-43215

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-43215

Key Details

CVE	CVE-2026-43215
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is required; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel
Classified as	CWE-667 (Improper Locking)

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

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. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-43215
CVE	https://www.cve.org/CVERecord?id=CVE-2026-43215

Source

Reference

NVD

CVE