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

What is CVE-2024-35908?

CVE-2024-35908 is a medium-severity denial of service vulnerability in Linux kernel, published on 19 May 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-401

Which versions are affected by CVE-2024-35908?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-35908?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-35908 being exploited?

There is no known exploitation of CVE-2024-35908 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-35908, DEBIAN-CVE-2024-35908, GHSA-7mq2-78wx-f53x, ROOT-OS-UBUNTU-2204-CVE-2024-35908, UBUNTU-CVE-2024-35908.