CVE-2026-90291
kernel: module/dups: Fix use-after-free in kmod_dup_req lifetime handling
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 14, 2026
Description
A flaw was found in the Linux kernel's module duplication handling (module/dups). This use-after-free vulnerability arises from incorrect lifetime management of internal request objects. When multiple operations access these objects concurrently, an object can be prematurely freed while still being referenced, potentially leading to system instability or denial of service.
CVSS score applicability
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
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference