CVE-2026-64136
CRITICAL
INFO
Priority: 0.04
BB Relevance:
80/100
Published: 2026-07-19
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlocked() Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifs_tcp_ses_lock for tc_lock around tc_count changes. There was missing lock around tc_count increment inside smb2_find_smb_sess_tcon_unlocked().
Weakness Classification (1)
Affected Software (17)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 92d197ef7e9bb4994dae2bb17c2f19fa09d219a2 < 7585d4242f59185b084957fa077396e53dbf7c24 |
| Linux | Linux | 953953abb66e52c224057ab91e404284fefeab62 < 7df1df6f40c0720d30206aa35c0343b962350e0d |
| Linux | Linux | 601dd3b79769b38d30b693c40afdb2a4b7edf9d0 < 13fb413ae22a37c69341918a6d651d19a9b0b9b7 |
| Linux | Linux | 3969db6b22e3d90d8c5f22ac1a7fe0350a94c136 < bf4ebdb19ff9b3cdf992b50715fe61633327416a |
| Linux | Linux | 96c4af418586ee9a6aab61738644366426e05316 < e374f4e496fef8168784f93a4477d67be34485fd |
| Linux | Linux | 96c4af418586ee9a6aab61738644366426e05316 < 4d8690dace005a38e6dbde9ecce2da3ad85c7c41 |
| Linux | Linux | 8c59eeeeffa1524ef57e173a89a1a3ff539888d5 |
| Linux | Linux | 6.6.128 < 6.6.142 |
| Linux | Linux | 6.12.75 < 6.12.92 |
| Linux | Linux | 6.18.16 < 6.18.34 |
| Linux | Linux | 6.19.6 < 6.20 |
| Linux | Linux | 7.0 |
| linux | linux_kernel | 6.6.128 – 6.6.142 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | 7.1 |