What’s Vulnerable › Vulnerabilities

CVE-2024-35908: tls: get psock ref after taking rxlock to avoid leak

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-19 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: tls: get psock ref after taking rxlock to avoid leak At the start of tls_sw_recvmsg, we take a reference on the psock, and then call tls_rx_reader_lock. If that fails, we return directly without releasing the reference. Instead of adding a new label, just take the reference after locking has succeeded, since we don't need it before.

Affected products

• Linux kernel: from 6.0 before 6.1.85; from 6.2 before 6.6.26; from 6.7 before 6.8.5; 6.9-rc1 — 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/30fabe50a7ace3e9d57cf7f9288f33ea408491c8
• https://git.kernel.org/stable/c/417e91e856099e9b8a42a2520e2255e6afe024be
• https://git.kernel.org/stable/c/b565d294e3d5aa809566a4d819835da11997d8b3
• https://git.kernel.org/stable/c/f1b7f14130d782433bc98c1e1e41ce6b4d4c3096
• https://git.kernel.org/stable/c/30fabe50a7ace3e9d57cf7f9288f33ea408491c8
• https://git.kernel.org/stable/c/417e91e856099e9b8a42a2520e2255e6afe024be
• https://git.kernel.org/stable/c/b565d294e3d5aa809566a4d819835da11997d8b3
• https://git.kernel.org/stable/c/f1b7f14130d782433bc98c1e1e41ce6b4d4c3096

Get alerted when CVE-2024-35908 or the next vulnerability affects your stack