RDMA/bng_re: return a timeout when firmware responses stall

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Summary

CVECVE-2026-93153
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:10 UTC
Updated2026-09-17 17:18:10 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: RDMA/bng_re: return a timeout when firmware responses stall __wait_for_resp() documents that it returns a non-zero error when a firmware command does not complete, and bng_re_rcfw_send_message() already marks the firmware as stalled when the helper returns -ENODEV. However, the helper ignores wait_event_timeout() expiry. If the response slot remains in use after the timeout and after the polled CREQ service attempt, the loop starts another full timeout period and can repeat forever. Return -ENODEV after a timed out wait that still has no response. The existing caller then marks FIRMWARE_STALL_DETECTED and returns -ETIMEDOUT to the command issuer.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 53c6ee7d7f68a0679f8ddc703338aa2550d24a17 02d4ee65dc2e883f554169155937742e6014c243 git Not specified
CNA Linux Linux affected 53c6ee7d7f68a0679f8ddc703338aa2550d24a17 5f9576c6734abca88a02db72c466e09d2eddf160 git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/02d4ee65dc2e883f554169155937742e6014c243 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5f9576c6734abca88a02db72c466e09d2eddf160 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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