Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2024-46801

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
18/09/2024
Last modified:
20/09/2024

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> libfs: fix get_stashed_dentry()<br /> <br /> get_stashed_dentry() tries to optimistically retrieve a stashed dentry<br /> from a provided location. It needs to ensure to hold rcu lock before it<br /> dereference the stashed location to prevent UAF issues. Use<br /> rcu_dereference() instead of READ_ONCE() it&amp;#39;s effectively equivalent<br /> with some lockdep bells and whistles and it communicates clearly that<br /> this expects rcu protection.

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:*:*:*:*:*:*:*:* 6.9 (including) 6.10.10 (excluding)
cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools