CVE-2026-98963
Received Received - Intake

Linux Kernel Use-After-Free in Btrfs Subsystem

Publication date: 2026-10-23

Last updated on: 2026-10-23

Assigner: kernel.org

Description
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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-23
Last Modified
2026-10-23
Generated
2026-10-23
EPSS Evaluated
N/A
NVD
CVE-2026-98963
EUVD
EUVD-2026-108757

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
Linux Linux 34310c442e175f286b4c06ab5caa4e0b267ea31c
Linux Linux 34310c442e175f286b4c06ab5caa4e0b267ea31c
Linux Linux 34310c442e175f286b4c06ab5caa4e0b267ea31c
Linux Linux 6.13

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-UNKNOWN

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
AI Quick Actions have not been generated yet.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-98963. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart