CVE-2026-98778
Published: October 21, 2026Last modified: November 3, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process.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.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.191-r0) |
| 25 LTS | linux-lts | Fixed (6.12.115-r0) | |
| Stream | linux-lts | Fixed (6.18.58-r0) |
References
- https://git.kernel.org/stable/c/1ab671b50714ad8e359cf37eb041d8044319ccdc
- https://git.kernel.org/stable/c/22c135635fdd9816c0ef140d6de7b2e4fdf73e89
- https://git.kernel.org/stable/c/60a9f7323ae7318a7cce0d387c318da24f1e8726
- https://git.kernel.org/stable/c/86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff
- https://git.kernel.org/stable/c/e9b364e46d594c2ec663c9c49f10c1ca541ecc0f
- https://git.kernel.org/stable/c/f4c072e544b8c15e6b9157208761db6fa4fe95a1