CVE-2024-40955

A slab-out-of-bounds vulnerability was found in the ext4 filesystem of the Linux kernel. This issue occurs when an excessively large value is set for s_mb_group_prealloc, leading to out-of-bounds reads in the ext4_mb_find_good_group_avg_frag_lists() function. This issue can be triggered by setting a high preallocation value, causing the kernel to access invalid memory locations, which can result in crashes or undefined behavior.

Red Hat Enterprise Linux is not vulnerable to this CVE, as it does not affect the versions or configurations of the Linux kernel used in its distributions.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.