CVE-2024-26851

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The vulnerability is related to the netfilter component of the Linux kernel and is caused by errors in reading beyond boundaries in the decode seq() function. This can lead to a denial of service. The issue arises when abnormal data in skb->data causes the extension bitmap length to exceed 32 during the decoding of a ras message, resulting in a shift operation that can become negative after several loops. The UBSAN load can detect this negative shift as undefined behavior and report an exception. To address this, protection has been added to prevent the length from exceeding 32, otherwise, it would return an out-of-range error and stop decoding.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.