CVE-2026-64136
In the Linux kernel, the following vulnerability has been resolved: smb: client: protect tc_count increment in smb2_find_smb_sess_tcon_unlo
CVSS
9.8
Critical
EPSS
0.2%
p7
KEV
—
Exploit Today
2
0-100
Published: Jul 19, 2026 · Last modified: Jul 20, 2026
Not enough EPSS history yet.
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().
- git.kernel.orghttps://git.kernel.org/stable/c/13fb413ae22a37c69341918a6d651d19a9b0b9b7
- git.kernel.orghttps://git.kernel.org/stable/c/4d8690dace005a38e6dbde9ecce2da3ad85c7c41
- git.kernel.orghttps://git.kernel.org/stable/c/7df1df6f40c0720d30206aa35c0343b962350e0d
- git.kernel.orghttps://git.kernel.org/stable/c/bf4ebdb19ff9b3cdf992b50715fe61633327416a
- git.kernel.orghttps://git.kernel.org/stable/c/e374f4e496fef8168784f93a4477d67be34485fd
No related CVEs by CWE or product.