CVE-2026-68287

A flaw was found in the Linux kernel's drop_monitor feature. Incorrect size calculations for 64-bit attributes on 32-bit architectures without efficient unaligned access support can lead to an under-estimation of internal buffer (SKB) size. This under-estimation may cause a kernel panic, resulting in a Denial of Service (DoS) for the affected system.

This issue affects drop_monitor on 32-bit architectures. Incorrect nla_put_u64_64bit size calculations can corrupt netlink messages. 64-bit systems are not affected.

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.