CVE-2024-50127

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

05/11/2024

Last modified:

03/11/2025

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix use-after-free in taprio_change() In &#39;taprio_change()&#39;, &#39;admin&#39; pointer may become dangling due to sched switch / removal caused by &#39;advance_sched()&#39;, and critical section protected by &#39;q->current_entry_lock&#39; is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer &#39;rcu_replace_pointer()&#39; over &#39;rcu_assign_pointer()&#39; to update &#39;admin&#39; immediately before an attempt to schedule freeing.

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::::::::	5.2 (including)	5.15.170 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.115 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.59 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.11.6 (excluding)
cpe:2.3:o:linux:linux_kernel:6.12:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.12:rc4::::::

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

CVE-2024-50127

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools