Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-49168

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
26/02/2025
Last modified:
21/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> btrfs: do not clean up repair bio if submit fails<br /> <br /> The submit helper will always run bio_endio() on the bio if it fails to<br /> submit, so cleaning up the bio just leads to a variety of use-after-free<br /> and NULL pointer dereference bugs because we race with the endio<br /> function that is cleaning up the bio. Instead just return BLK_STS_OK as<br /> the repair function has to continue to process the rest of the pages,<br /> and the endio for the repair bio will do the appropriate cleanup for the<br /> page that it was given.

Impact

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.10.248 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.184 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 5.16.19 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.17 (including) 5.17.2 (excluding)

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


References to Advisories, Solutions, and Tools