Vulnerability in Linux

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In the Linux kernel, the following vulnerability has been resolved: binder: fix is_failure flag for superseded transaction cleanup When a TF_UPDATE_TXN transaction supersedes a pending async transaction, binder_release_entire_buffer() is called with is_failure=false. Since the superseded transaction was never delivered, binder_apply_fd_fixups() was never called and no fds were installed in the target process.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

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4019

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-98866CVE-2026-98624CVE-2026-98745+326 more CVEs

[ References ]References

• git.kernel.org/stable/c/1ab671b50714ad8e359cf37eb041d8044319ccdc
• git.kernel.org/stable/c/22c135635fdd9816c0ef140d6de7b2e4fdf73e89
• git.kernel.org/stable/c/60a9f7323ae7318a7cce0d387c318da24f1e8726
• git.kernel.org/stable/c/86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff
• git.kernel.org/stable/c/e9b364e46d594c2ec663c9c49f10c1ca541ecc0f