What’s Vulnerable › Vulnerabilities

CVE-2024-26928: smb: client: fix potential UAF in cifs_debug_files_proc_show()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-28 · updated 2026-06-17
• Weakness: CWE-416

Description

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

Affected products

• Debian Linux: 11.0
• Linux kernel: from 4.20 before 5.10.237; from 5.11 before 5.15.180; from 5.16 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 5.10.237, 5.15.180, 6.1.85, 6.6.26, 6.8.5

How to fix

Upgrade to a fixed version: Linux kernel 5.10.237, 5.15.180, 6.1.85, 6.6.26. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/229042314602db62559ecacba127067c22ee7b88
• https://git.kernel.org/stable/c/3402faf78b2516b0af1259baff50cc8453ef0bd1
• https://git.kernel.org/stable/c/8f8718afd446cd4ea3b62bacc3eec09f8aae85ee
• https://git.kernel.org/stable/c/a140224bcf87eb98a87b67ff4c6826c57e47b704
• https://git.kernel.org/stable/c/a65f2b56334ba4dc30bd5ee9ce5b2691b973344d
• https://git.kernel.org/stable/c/ca545b7f0823f19db0f1148d59bc5e1a56634502
• https://git.kernel.org/stable/c/229042314602db62559ecacba127067c22ee7b88
• https://git.kernel.org/stable/c/3402faf78b2516b0af1259baff50cc8453ef0bd1
• https://git.kernel.org/stable/c/a65f2b56334ba4dc30bd5ee9ce5b2691b973344d
• https://git.kernel.org/stable/c/ca545b7f0823f19db0f1148d59bc5e1a56634502
• https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

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