XFS Filesystem Use-After-Free in Linux Kernel

Publication date: 2026-05-05

Last updated on: 2026-05-29

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: xfs: don't irele after failing to iget in xfs_attri_recover_work xlog_recovery_iget* never set @ip to a valid pointer if they return an error, so this irele will walk off a dangling pointer. Fix that.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-05

Last Modified

2026-05-29

Generated

2026-07-06

AI Q&A

2026-05-05

EPSS Evaluated

2026-07-05

NVD

CVE-2026-43063

EUVD

EUVD-2026-27359

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	From 6.13 (inc) to 6.18.21 (exc)
linux	linux_kernel	From 6.19 (inc) to 6.19.11 (exc)
linux	linux_kernel	From 6.10 (inc) to 6.12.80 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel's XFS filesystem code. Specifically, it involves the function xfs_attri_recover_work where a call to irele is made after a failed iget operation. The xlog_recovery_iget functions do not set the pointer @ip to a valid value if they return an error, which means that the irele function ends up dereferencing a dangling pointer. This can lead to undefined behavior or system instability.

Impact Analysis

The impact of this vulnerability could include system crashes or instability due to the dereferencing of invalid pointers in the kernel. This may lead to denial of service or potential corruption of filesystem data, affecting system reliability and availability.

Hi! I’m here to help you understand CVE-2026-43063. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70