CVE-2026-98778

binder: fix is_failure flag for superseded transaction cleanup

CVE-2026-98778 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98778, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
6.3
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0017
6th percentile

In the Linux kernel, the following vulnerability has been resolved: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process.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.

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 13.5 (trixie) 6.12.113-1 DEBIAN-CVE-2026-98778 Oct 19, 2026
linux · Debian 14 7.2.10-1 DEBIAN-CVE-2026-98778 Oct 19, 2026
linux-6.12 · Debian 12.15 (bookworm) 6.12.113-1~deb12u1 DEBIAN-CVE-2026-98778 Oct 19, 2026

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