Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-23423

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/04/2026
Last modified:
23/04/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> btrfs: free pages on error in btrfs_uring_read_extent()<br /> <br /> In this function the &amp;#39;pages&amp;#39; object is never freed in the hopes that it is<br /> picked up by btrfs_uring_read_finished() whenever that executes in the<br /> future. But that&amp;#39;s just the happy path. Along the way previous<br /> allocations might have gone wrong, or we might not get -EIOCBQUEUED from<br /> btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a<br /> cleanup section that frees all memory allocated by this function without<br /> assuming any deferred execution, and this also needs to happen for the<br /> &amp;#39;pages&amp;#39; allocation.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13.1 (including) 6.18.17 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 6.19.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.13:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools