wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68351
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:27 UTC
Updated2026-08-10 13:20:27 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: carl9170: bound memcpy length in cmd callback to prevent OOB read When the firmware sends a command response with a length mismatch, carl9170_cmd_callback() logs the mismatch and calls carl9170_restart() but then falls through to memcpy(ar->readbuf, buffer + 4, len - 4). Since len comes from the firmware and can exceed ar->readlen, this copies more data than the readbuf was allocated for. Bound the memcpy to min(len - 4, ar->readlen) so that the response is still completed -- avoiding repeated restarts from queued garbage -- while preventing an overread past the response buffer.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a84fab3cbfdc427e7d366f1cc844f27b2084c26c f74e34e66379e487a09009a4f2d42470051672bd git Not specified
CNA Linux Linux affected a84fab3cbfdc427e7d366f1cc844f27b2084c26c 500c36649f270de05a56591fcc1aaaa36687958e git Not specified
CNA Linux Linux affected a84fab3cbfdc427e7d366f1cc844f27b2084c26c 9aee949c68dc6dccbc54333537b109c53fe2079f git Not specified
CNA Linux Linux affected a84fab3cbfdc427e7d366f1cc844f27b2084c26c cb7a38810cf25738176dac32dec7a146b3f959cf git Not specified
CNA Linux Linux affected a84fab3cbfdc427e7d366f1cc844f27b2084c26c 4cde55b2feff9504d1f993ab80e84e7ccb62791c git Not specified
CNA Linux Linux affected 2.6.37 Not specified
CNA Linux Linux unaffected 2.6.37 semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cb7a38810cf25738176dac32dec7a146b3f959cf 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4cde55b2feff9504d1f993ab80e84e7ccb62791c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9aee949c68dc6dccbc54333537b109c53fe2079f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f74e34e66379e487a09009a4f2d42470051672bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/500c36649f270de05a56591fcc1aaaa36687958e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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