CVE-2026-80706 is a vulnerability in Linux Kernel
Published on August 28, 2026
can: softing: fw_parse(): validate firmware record spans
In the Linux kernel, the following vulnerability has been resolved:
can: softing: fw_parse(): validate firmware record spans
fw_parse() reads a fixed record header, a firmware-provided payload,
and a trailing checksum without knowing the end of the firmware blob. A
truncated record can therefore make those reads exceed the blob.
The same record also supplies addresses and lengths for writes into
DPRAM. The generic loader uses wrap-prone mixed signed arithmetic for its
bounds check, while the application loader does not bound the staging
copy at all.
Pass the firmware end to the parser and validate the full source record.
Use a signed wide offset for generic DPRAM records and validate the
application staging span against the mapped DPRAM before copying.
Products Associated with CVE-2026-80706
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Affected Versions
Linux:- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below f6d9a6a9512430b395a1940d7b216394fd02d30b is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below 84c850b08fc0d671c245144b619683129b55690a is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50 is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below ae588e5b9cc268de1aabf30f939f0870717ca164 is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below ad331e26fd213a19fee0de18cdacd67b7ff5b478 is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below 2ee477e541a6d5e434d6a4041c6b677ab42e1d82 is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below 808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1 is affected.
- Version 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c and below 856d6cb04e5407523566b075841dcd6423757d1c is affected.
- Version 2.6.38 is affected.
- Before 2.6.38 is unaffected.
- Version 5.10.265, <= 5.10.* is unaffected.
- Version 5.15.216, <= 5.15.* is unaffected.
- Version 6.1.183, <= 6.1.* is unaffected.
- Version 6.6.151, <= 6.6.* is unaffected.
- Version 6.12.103, <= 6.12.* is unaffected.
- Version 6.18.44, <= 6.18.* is unaffected.
- Version 7.1.8, <= 7.1.* is unaffected.
- Version 7.2, <= * is unaffected.