CVE-2026-80706can: softing: fw_parse(): validate firmware record spans
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before f6d9a6a9512430b395a1940d7b216394fd02d30b; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before 84c850b08fc0d671c245144b619683129b55690a; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before ae588e5b9cc268de1aabf30f939f0870717ca164; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before ad331e26fd213a19fee0de18cdacd67b7ff5b478; 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c builds before 2ee477e541a6d5e434d6a4041c6b677ab42e1d82; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before 808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1; from 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c before 856d6cb04e5407523566b075841dcd6423757d1c | CNA record |
References
- https://git.kernel.org/stable/c/f6d9a6a9512430b395a1940d7b216394fd02d30b
- https://git.kernel.org/stable/c/84c850b08fc0d671c245144b619683129b55690a
- https://git.kernel.org/stable/c/d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50
- https://git.kernel.org/stable/c/ae588e5b9cc268de1aabf30f939f0870717ca164
- https://git.kernel.org/stable/c/ad331e26fd213a19fee0de18cdacd67b7ff5b478
- https://git.kernel.org/stable/c/2ee477e541a6d5e434d6a4041c6b677ab42e1d82
- https://git.kernel.org/stable/c/808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1
- https://git.kernel.org/stable/c/856d6cb04e5407523566b075841dcd6423757d1c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.