Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2022-49479

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
26/02/2025
Last modified:
24/03/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mt76: fix tx status related use-after-free race on station removal<br /> <br /> There is a small race window where ongoing tx activity can lead to a skb<br /> getting added to the status tracking idr after that idr has already been<br /> cleaned up, which will keep the wcid linked in the status poll list.<br /> Fix this by only adding status skbs if the wcid pointer is still assigned<br /> in dev-&gt;wcid, which gets cleared early by mt76_sta_pre_rcu_remove

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:*:*:*:*:*:*:*:* 5.16 (including) 5.17.14 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.18 (including) 5.18.3 (excluding)

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


References to Advisories, Solutions, and Tools