CVE-2025-40103

smb: client: Fix refcount leak for cifs_sb_tlink

EPSS 0.2%

Vexday Risk Score

3Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

30 out 2025Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

Produtos afetados

Linux · Linux

Referências

https://git.kernel.org/stable/c/790282abe9d805f08618c1c24ea2529e7259b692 https://git.kernel.org/stable/c/896bb31e1416f582503db1350cf1bd10dc64e5a6 https://git.kernel.org/stable/c/c2b77f42205ef485a647f62082c442c1cd69d3fc https://git.kernel.org/stable/c/d3c8ea197055c260119a13360e8202a27e53e1e4 https://git.kernel.org/stable/c/d7dd034c14928306db1b46be277ae439b84dacf9 https://git.kernel.org/stable/c/e15605b68b490186da2ad8029c0351a9cfb0b9af