SB2026082854 - Out-of-bounds write in Linux kernel can softing driver
Published: August 28, 2026
Security Bulletin ID
SB2026082854
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-80706)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: 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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds write in the generic Softing CAN firmware loader DPRAM copy logic when processing firmware-provided DPRAM addresses and lengths. A local user can supply crafted address and length values to cause a denial of service.
The bounds check uses wrap-prone mixed signed arithmetic for generic DPRAM records.
Remediation
Install update from vendor's website.
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