Memory leak in Linux kernel - CVE-2026-98319
Published: October 7, 2026
Vulnerability identifier: #VU153708
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-2026-98319
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to deplete kernel memory.
The vulnerability exists due to a memory leak caused by incomplete error-path cleanup in prepare_signaling() in the DRM subsystem when handling a request that provides an out_fence_ptr without DRM_MODE_PAGE_FLIP_EVENT and encounters an allocation failure or a failure in setup_out_fence(). A local user can trigger an error path that leaves a drm_pending_vblank_event unreleased to deplete kernel memory.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-98319
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.113-1
linux (Debian package) - update to 6.12.113-1
External References
- https://git.kernel.org/stable/c/3d6576ed3de01e8a378397b7020e33ae3d40aa6c
- https://git.kernel.org/stable/c/780716e2e019186fa6e5aad097a44b87b0b5388f
- https://git.kernel.org/stable/c/86c33f740aa27e9cdc1259f0cc59c9c58f545e4b
- https://git.kernel.org/stable/c/88c450e23b8fd4f1dcd329562f5e81ef05f3d941
- https://git.kernel.org/stable/c/9eb1a393c89a79c4210230d23e7d88d239c61d7b
- https://git.kernel.org/stable/c/b9a68a9ccaada15d8dd0102c188cc6b868ff800b
- https://git.kernel.org/stable/c/d0be0516b5224eb5b6f42f8564a8deadb20ae16b
- https://git.kernel.org/stable/c/daefd7ff159b0d1fb8c9e64430dcbe2aca1bdd09