What’s Vulnerable › Vulnerabilities

CVE-2024-35861: smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-19 · updated 2026-08-04
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF in cifs_signal_cifsd_for_reconnect() Skip sessions that are being teared down (status == SES_EXITING) to avoid UAF.

Affected products

• Linux kernel: from 5.17.2 before 6.1.85; from 6.2 before 6.6.26; from 6.7 before 6.8.5; 6.9-rc1, 6.9-rc2 — fixed in 6.1.85, 6.6.26, 6.8.5

How to fix

Upgrade to a fixed version: Linux kernel 6.1.85, 6.6.26, 6.8.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2cfff21732132e363b4cc275d63ea98f1af726c1
• https://git.kernel.org/stable/c/7e8360ac8774e19b0b25f44fff84a105bb2417e4
• https://git.kernel.org/stable/c/e0e50401cc3921c9eaf1b0e667db174519ea939f
• https://git.kernel.org/stable/c/f9a96a7ad1e8d25dc6662bc7552e0752de74a20d
• https://git.kernel.org/stable/c/2cfff21732132e363b4cc275d63ea98f1af726c1
• https://git.kernel.org/stable/c/7e8360ac8774e19b0b25f44fff84a105bb2417e4
• https://git.kernel.org/stable/c/e0e50401cc3921c9eaf1b0e667db174519ea939f
• https://git.kernel.org/stable/c/f9a96a7ad1e8d25dc6662bc7552e0752de74a20d

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