binder: fix is_failure flag for superseded transaction cleanup

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98778
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:31 UTC
Updated2026-10-21 13:21:45 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process. With is_failure=false, the BINDER_TYPE_FDA cleanup handler interprets stale buffer contents as installed fd numbers and passes them to binder_deferred_fd_close(), closing unrelated file descriptors. Pass is_failure=true since the transaction was never delivered to the target, matching the semantics of all other undelivered-transaction cleanup paths.

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.057230000 (date 2026-10-21)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9864bb4801331daa48514face9d0f4861e4d485b e9b364e46d594c2ec663c9c49f10c1ca541ecc0f git Not specified
CNA Linux Linux affected 9864bb4801331daa48514face9d0f4861e4d485b 60a9f7323ae7318a7cce0d387c318da24f1e8726 git Not specified
CNA Linux Linux affected 9864bb4801331daa48514face9d0f4861e4d485b 86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff git Not specified
CNA Linux Linux affected 9864bb4801331daa48514face9d0f4861e4d485b 1ab671b50714ad8e359cf37eb041d8044319ccdc git Not specified
CNA Linux Linux affected 9864bb4801331daa48514face9d0f4861e4d485b 22c135635fdd9816c0ef140d6de7b2e4fdf73e89 git Not specified
CNA Linux Linux affected 6.0 Not specified
CNA Linux Linux unaffected 6.0 semver Not specified
CNA Linux Linux unaffected 6.6.160 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.113 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.56 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/60a9f7323ae7318a7cce0d387c318da24f1e8726 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e9b364e46d594c2ec663c9c49f10c1ca541ecc0f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1ab671b50714ad8e359cf37eb041d8044319ccdc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/22c135635fdd9816c0ef140d6de7b2e4fdf73e89 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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