CVE-2026-23423

MEDIUM EPSS 2.1%
Published Apr 3, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 3, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: btrfs: free pages on error in btrfs_uring_read_extent() In this function the 'pages' object is never freed in the hopes that it is picked up by btrfs_uring_read_finished() whenever that executes in the future. But that's just the happy path. Along the way previous allocations might have gone wrong, or we might not get -EIOCBQUEUED from btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a cleanup section that frees all memory allocated by this function without assuming any deferred execution, and this also needs to happen for the 'pages' allocation.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-401

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.13.1  –  <6.18.17
linuxlinux_kernel*≥6.19  –  <6.19.7
linuxlinux_kernel6.13any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07
    Patch