Out-of-bounds read in Linux kernel - CVE-2026-80706
Published: August 28, 2026
Vulnerability identifier: #VU146068
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-80706
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds read in fw_parse() in the Softing CAN firmware loader when parsing a crafted firmware blob. A local user can provide a truncated firmware record to cause a denial of service.
The issue is triggered while processing firmware records composed of a header, payload, and trailing checksum.
Affected software
Linux kernel
How to mitigate CVE-2026-80706
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/2ee477e541a6d5e434d6a4041c6b677ab42e1d82
- https://git.kernel.org/stable/c/808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1
- https://git.kernel.org/stable/c/84c850b08fc0d671c245144b619683129b55690a
- https://git.kernel.org/stable/c/856d6cb04e5407523566b075841dcd6423757d1c
- https://git.kernel.org/stable/c/ad331e26fd213a19fee0de18cdacd67b7ff5b478
- https://git.kernel.org/stable/c/ae588e5b9cc268de1aabf30f939f0870717ca164
- https://git.kernel.org/stable/c/d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50
- https://git.kernel.org/stable/c/f6d9a6a9512430b395a1940d7b216394fd02d30b