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

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CVE-2024-50030

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
21/10/2024
Last modified:
25/10/2024

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/xe/ct: prevent UAF in send_recv()<br /> <br /> Ensure we serialize with completion side to prevent UAF with fence going<br /> out of scope on the stack, since we have no clue if it will fire after<br /> the timeout before we can erase from the xa. Also we have some dependent<br /> loads and stores for which we need the correct ordering, and we lack the<br /> needed barriers. Fix this by grabbing the ct-&gt;lock after the wait, which<br /> is also held by the completion side.<br /> <br /> v2 (Badal):<br /> - Also print done after acquiring the lock and seeing timeout.<br /> <br /> (cherry picked from commit 52789ce35c55ccd30c4b67b9cc5b2af55e0122ea)

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:*:*:*:*:*:*:*:* 6.8 (including) 6.11.4 (excluding)
cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools