CVE-2022-49798 tracing: Fix race where eprobes can be called before the event

What is CVE-2022-49798?

CVE-2022-49798 is a medium-severity vulnerability in Linux kernel, published on 1 May 2025. 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:

tracing: Fix race where eprobes can be called before the event

The flag that tells the event to call its triggers after reading the event is set for eprobes after the eprobe is enabled. This leads to a race where the eprobe may be triggered at the beginning of the event where the record information is NULL. The eprobe then dereferences the NULL record causing a NULL kernel pointer bug.

Test for a NULL record to keep this from happening.

Weakness: CWE-362

Which versions are affected by CVE-2022-49798?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49798?

Apply the vendor's patch.

Is CVE-2022-49798 being exploited?

There is no known exploitation of CVE-2022-49798 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-2022-49798, GHSA-g26c-fp96-224v, UBUNTU-CVE-2022-49798.