CVE-2022-49768 9p: trans_fd/p9_conn_cancel: drop client lock earlier

What is CVE-2022-49768?

CVE-2022-49768 is a high-severity vulnerability in Linux kernel, published on 1 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

9p: trans_fd/p9_conn_cancel: drop client lock earlier

syzbot reported a double-lock here and we no longer need this lock after requests have been moved off to local list: just drop the lock earlier.

Weakness: CWE-667

Which versions are affected by CVE-2022-49768?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49768?

Apply the vendor's patch.

Is CVE-2022-49768 being exploited?

There is no known exploitation of CVE-2022-49768 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 DEBIAN-CVE-2022-49768, GHSA-6p36-94f3-3rfp, UBUNTU-CVE-2022-49768.