CVE-2026-80643

A flaw was found in the Linux kernel's EDAC/igen6 driver. When this driver is unloaded, a missing 'release()' function for memory controller devices can lead to a system call trace. This issue indicates a system error and could potentially result in system instability or a denial of service (DoS).

A low impact flaw was found in the Linux kernel EDAC igen6 driver shipped in Red Hat Enterprise Linux and Red Hat In-Vehicle OS. The igen6_edac driver registers its memory controller devices without a release() function, so when a privileged local user unloads the driver, the kernel emits a WARNING call trace from the device release path. This is a device lifetime management bug rather than a memory corruption issue, and its practical consequence is a local availability concern; on systems configured to panic on kernel warnings it could result in a kernel panic and denial of service. Kernels in Red Hat Enterprise Linux 8, 9, and 10 update streams and Red Hat In-Vehicle OS 2 are affected, while Red Hat Enterprise Linux 6 ELS, 7 ELS, and 8.4 are not affected because the vulnerable code is not present in those streams. Because triggering this issue requires privileged local access and the observable effect is a kernel warning call trace rather than memory corruption or a security boundary violation, the fix is deferred to a future update; the residual risk is limited to local denial of service by an already privileged user. Although the Red Hat CVSS:3.1 base score for this flaw is 5.5 (Moderate), Red Hat rates the overall security impact as low for these reasons.

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.