binder: fix is_failure flag for superseded transaction cleanup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In the Linux kernel, the following vulnerability has been resolved: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process.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