CVE-2025-40103

Summary

In the Linux kernel, the following vulnerability has been resolved:

smb: client: Fix refcount leak for cifs_sb_tlink

Fix three refcount inconsistency issues related to cifs_sb_tlink.

Comments for cifs_sb_tlink state that cifs_put_tlink() needs to be called after successful calls to cifs_sb_tlink(). Three calls fail to update refcount accordingly, leading to possible resource leaks.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < d3c8ea197055c260119a13360e8202a27e53e1e4affected
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < 790282abe9d805f08618c1c24ea2529e7259b692affected
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < d7dd034c14928306db1b46be277ae439b84dacf9affected
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < e15605b68b490186da2ad8029c0351a9cfb0b9afaffected
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < 896bb31e1416f582503db1350cf1bd10dc64e5a6affected
LinuxLinux8ceb984379462f94bdebef3288d569c6e1f912ea < c2b77f42205ef485a647f62082c442c1cd69d3fcaffected
LinuxLinux3.7affected
LinuxLinux0 < 3.7unaffected
LinuxLinux5.15.203 <= 5.15.*unaffected
LinuxLinux6.1.158 <= 6.1.*unaffected
LinuxLinux6.6.114 <= 6.6.*unaffected
LinuxLinux6.12.55 <= 6.12.*unaffected
LinuxLinux6.17.5 <= 6.17.*unaffected
LinuxLinux6.18 <= *unaffected

Weaknesses

References