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CVE-2022-49731

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
26/02/2025
Last modified:
01/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo()<br /> <br /> In an unlikely (and probably wrong?) case that the &amp;#39;ppi&amp;#39; parameter of<br /> ata_host_alloc_pinfo() points to an array starting with a NULL pointer,<br /> there&amp;#39;s going to be a kernel oops as the &amp;#39;pi&amp;#39; local variable won&amp;#39;t get<br /> reassigned from the initial value of NULL. Initialize &amp;#39;pi&amp;#39; instead to<br /> &amp;#39;&amp;ata_dummy_port_info&amp;#39; to fix the possible kernel oops for good...<br /> <br /> Found by Linux Verification Center (linuxtesting.org) with the SVACE static<br /> analysis tool.

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:*:*:*:*:*:*:*:* 4.9.320 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.10 (including) 4.14.285 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.15 (including) 4.19.249 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 4.20 (including) 5.4.200 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.124 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.49 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 5.18.6 (excluding)
cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools