fuse: fix race between interrupt and resend

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80860
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-04 16:18:15 UTC
Updated2026-09-11 10:16:52 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: fuse: fix race between interrupt and resend After commit f8fce75fedf7 ("fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req") the WARN_ON(!list_empty(&req->intr_entry)) in fuse_request_free() still triggers due to the following race: In request_wait_answer() if (test_bit(FR_SENT, &req->flags)) -> returns true In fuse_chan_resend() clear_bit(FR_SENT, &req->flags) In request_wait_answer() queue_interrupt(req) Fix by: - move clearing FR_SENT inside fpq->lock - move setting FR_PENDING inside fiq->lock - recheck FR_SENT after acquiring fiq->lock in fuse_dev_queue_interrupt()

Risk And Classification

EPSS: 0.001450000 probability, percentile 0.040720000 (date 2026-09-07)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7366e6f4d2b4c7002b13fb01219e83679dad4127 0f930904452945f409eeeb0c9afa08bf27185cb1 git Not specified
CNA Linux Linux affected f8fce75fedf73ac72aa09163deb8f4291fdcaad2 26fbe4bc3ef3ab0200407681cbef182af5d151de git Not specified
CNA Linux Linux affected f8fce75fedf73ac72aa09163deb8f4291fdcaad2 ed9c881f3b498383f73c42712b359419da42a7b0 git Not specified
CNA Linux Linux affected 1d8ecd0cd696a5df0b2f72046a4ccee5d2a8ec2c git Not specified
CNA Linux Linux affected 893479015cb6442fd389d3b553ab3036c9541715 git Not specified
CNA Linux Linux affected 6.18.39 6.18.51 semver Not specified
CNA Linux Linux affected 6.12.96 6.13 semver Not specified
CNA Linux Linux affected 7.1.4 7.2 semver Not specified
CNA Linux Linux affected 7.2 Not specified
CNA Linux Linux unaffected 7.2 semver Not specified
CNA Linux Linux unaffected 6.18.51 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.3 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/ed9c881f3b498383f73c42712b359419da42a7b0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/26fbe4bc3ef3ab0200407681cbef182af5d151de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0f930904452945f409eeeb0c9afa08bf27185cb1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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