CVE-2022-49633 icmp: Fix data-races around sysctl_icmp_echo_enable_probe.
A data race in the Linux kernel's ICMP probe sysctl handling could lead to inconsistent state, requiring a patch to add proper read barriers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49633?
CVE-2022-49633 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 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:
icmp: Fix data-races around sysctl_icmp_echo_enable_probe.
While reading sysctl_icmp_echo_enable_probe, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers.
Weakness: CWE-362
Which versions are affected by CVE-2022-49633?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49633?
Apply the vendor's patch.
Is CVE-2022-49633 being exploited?
There is no known exploitation of CVE-2022-49633 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49633, GHSA-v6v7-p6g2-52pc, UBUNTU-CVE-2022-49633.