can: softing: fw_parse(): validate firmware record spans

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80706
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:56 UTC
Updated2026-08-29 07:16:52 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001200000 probability, percentile 0.020510000 (date 2026-08-31)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c f6d9a6a9512430b395a1940d7b216394fd02d30b git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c 84c850b08fc0d671c245144b619683129b55690a git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50 git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c ae588e5b9cc268de1aabf30f939f0870717ca164 git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c ad331e26fd213a19fee0de18cdacd67b7ff5b478 git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c 2ee477e541a6d5e434d6a4041c6b677ab42e1d82 git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c 808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1 git Not specified
CNA Linux Linux affected 03fd3cf5a179da12e6bee5e9d74b648aff68dc4c 856d6cb04e5407523566b075841dcd6423757d1c git Not specified
CNA Linux Linux affected 2.6.38 Not specified
CNA Linux Linux unaffected 2.6.38 semver Not specified
CNA Linux Linux unaffected 5.10.265 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.216 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.183 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.151 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.103 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.44 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/84c850b08fc0d671c245144b619683129b55690a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ad331e26fd213a19fee0de18cdacd67b7ff5b478 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d0eac0ea7cf493e787fd7b4a556e43ef03cb4b50 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f6d9a6a9512430b395a1940d7b216394fd02d30b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/808ed899dcf8bdef66894fda5eb7ee4bb0eb8dc1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/856d6cb04e5407523566b075841dcd6423757d1c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2ee477e541a6d5e434d6a4041c6b677ab42e1d82 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ae588e5b9cc268de1aabf30f939f0870717ca164 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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