---
id: CVE-2026-98778
title: 'binder: fix is_failure flag for superseded transaction cleanup'
summary: |-
  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  binder: fix is_failure flag for superseded transaction cleanup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() …
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 9864bb4801331daa48514face9d0f4861e4d485b <
    60a9f7323ae7318a7cce0d387c318da24f1e8726
  - >-
    Linux >= 9864bb4801331daa48514face9d0f4861e4d485b <
    86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff
  - >-
    Linux >= 9864bb4801331daa48514face9d0f4861e4d485b <
    1ab671b50714ad8e359cf37eb041d8044319ccdc
  - >-
    Linux >= 9864bb4801331daa48514face9d0f4861e4d485b <
    22c135635fdd9816c0ef140d6de7b2e4fdf73e89
  - Linux 6.0
published: '2026-10-18'
updated: '2026-10-18'
sourceUpdated: '2026-10-18T15:48:15.254Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98778'
references:
  - url: 'https://git.kernel.org/stable/c/60a9f7323ae7318a7cce0d387c318da24f1e8726'
  - url: 'https://git.kernel.org/stable/c/86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff'
  - url: 'https://git.kernel.org/stable/c/1ab671b50714ad8e359cf37eb041d8044319ccdc'
  - url: 'https://git.kernel.org/stable/c/22c135635fdd9816c0ef140d6de7b2e4fdf73e89'
tags:
  - cve.org
ingestedAt: '2026-10-18T16:47:32.490Z'
---

## Overview

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binder: fix is_failure flag for superseded transaction cleanup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superseded transaction was never delivered, binder_apply_fd_fixups() was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.

## Affected

- `Linux >= 9864bb4801331daa48514face9d0f4861e4d485b < 60a9f7323ae7318a7cce0d387c318da24f1e8726`
- `Linux >= 9864bb4801331daa48514face9d0f4861e4d485b < 86cdcc87d4ba60aebf94ba3346b3c900c5cd79ff`
- `Linux >= 9864bb4801331daa48514face9d0f4861e4d485b < 1ab671b50714ad8e359cf37eb041d8044319ccdc`
- `Linux >= 9864bb4801331daa48514face9d0f4861e4d485b < 22c135635fdd9816c0ef140d6de7b2e4fdf73e89`
- `Linux 6.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.