In the Linux kernel, the following vulnerability has been resolved:
smb: client: protect tccount increment in smb2findsmbsesstconunlocked()
Commit 96c4af418586 ("cifs: Fix locking usage for tcon fields") refactored cifs code to change cifstcpseslock for tclock around tc_count changes.
There was missing lock around tccount increment inside smb2findsmbsesstconunlocked().
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64136.json",
"cna_assigner": "Linux"
}