Memory leak in Linux kernel - CVE-2026-90128
Published: September 19, 2026
Vulnerability identifier: #VU151352
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90128
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service through memory resource exhaustion.
The vulnerability exists due to improper resource cleanup in add_direct_chain() in the vdpa/mlx5 memory-region handling code when handling allocation errors while creating a direct memory-region chain. A local user can trigger an allocation error to cause a denial of service through memory resource exhaustion.
Newly allocated direct memory-region entries are kept on a temporary list until the operation succeeds.
Affected software
Linux kernel
How to mitigate CVE-2026-90128
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/22d52af9e26a72bdfe2dcfb1419a091de4862cd9
- https://git.kernel.org/stable/c/23ae56d9e74c122f95cae71ae3b9fc259fb88446
- https://git.kernel.org/stable/c/637d867530daea61898e3346975978b7f67fc2ac
- https://git.kernel.org/stable/c/6ca752850de3b8162f030793cc15001aec85c4cf
- https://git.kernel.org/stable/c/c678d04ac9e5a64c2559c43bce273e845fbd09eb
- https://git.kernel.org/stable/c/c93defccf5eb0a92bdafa43487be6ce0221a2477
- https://git.kernel.org/stable/c/ed3462365636df3bc63e34d7468f4faed3f70a4e
- https://git.kernel.org/stable/c/eeac2ea4ad2654e3f160a9b608d05c9af31433a6