Bug 2559669 (CVE-2026-98963) - CVE-2026-98963 kernel: btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio
Summary: CVE-2026-98963 kernel: btrfs: always return -EIOCBQUEUED after btrfs_uring_re...
Keywords:
Status: NEW
Alias: CVE-2026-98963
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 12:57 UTC by OSIDB Bzimport
Modified: 2026-10-27 18:04 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-10-23 12:57:53 UTC 
In the Linux kernel, the following vulnerability has been resolved:

btrfs: always return -EIOCBQUEUED after btrfs_uring_read_extent_endio

If all bios finish before btrfs_encoded_read_regular_fill_pages()
returns, it calls btrfs_uring_read_extent_endio() and previously
returned the I/O status.  A negative errno then made
btrfs_uring_read_extent() unlock and free while
btrfs_uring_read_finished() did the same again.

Return -EIOCBQUEUED so only the deferred path cleans up.
Note You need to log in before you can comment on or make changes to this bug.