CVE-2026-43215

HIGH EPSS 21.5%
Published May 6, 20261mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
21.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-667

Affected Products 4

VendorProductVersionRange
linuxlinux_kernel*≥6.0  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6

References 5

  • git.kernel.org https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3969db6b22e3d90d8c5f22ac1a7fe0350a94c136
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/601dd3b79769b38d30b693c40afdb2a4b7edf9d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8c59eeeeffa1524ef57e173a89a1a3ff539888d5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/953953abb66e52c224057ab91e404284fefeab62
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/96c4af418586ee9a6aab61738644366426e05316
    Patch