Off-by-one in Linux kernel - CVE-2026-53088
Published: June 25, 2026
Vulnerability identifier: #VU135239
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53088
CWE-ID: CWE-193
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an off-by-one error in bcmgenet_put_txcb in the bcmgenet network driver when handling transmit control block pointer rewinding. A local user can trigger the flawed pointer handling to cause a denial of service.
How to mitigate CVE-2026-53088
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/14e9f86564fff7bcf7f45c1b69080e837b31d185
- https://git.kernel.org/stable/c/29394f722f620281f2ee9a47f947734e53d72c90
- https://git.kernel.org/stable/c/2a74590170427a3ca7cc4bb8690cdd559129c29c
- https://git.kernel.org/stable/c/4cab761fc51c65aef741fcece4a18f3554edbc09
- https://git.kernel.org/stable/c/57f3f53d2c9c5a9e133596e2f7bc1c50688a6d38
- https://git.kernel.org/stable/c/72df896e31ddd06fcc5a789f025ad7a62a18bc9b
- https://git.kernel.org/stable/c/85f34ec320d3881badfd4edc5fee5cd5012bb54d
- https://git.kernel.org/stable/c/fb9a3c1f547d0ff024dbfe7b6f327626ddf0a3de