PT-2025-3616 · Linux+1 · Linux Kernel+1

Ihor Solodrai · Published 2024-12-11 · Updated 2025-11-25 · CVE-2024-57891

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A vulnerability has been resolved in the Linux kernel related to the sched ext component, specifically in the scx ops bypass() function. The issue arises from the addition of outer irqsave/restore locking, which forgot to convert an inner rq unlock irqrestore() to rq unlock(), potentially re-enabling IRQ prematurely. This leads to a warning when raw local irq restore() is called with IRQs enabled. The vulnerability is associated with a call trace involving functions such as scx ops bypass(), scx ops enable.isra.0(), and bpf scx reg(). The estimated number of potentially affected devices and details about real-world incidents are not provided.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Locking

Weakness Enumeration

CWE-371

CWE-667

Related Identifiers

BDU:2025-03508

CVE-2024-57891

OPENSUSE-SU-2025:20081-1

SUSE-SU-2025:21074-1

SUSE-SU-2025:21139-1

SUSE-SU-2025:21179-1

Affected Products

Linux Kernel

Suse

References · 1271

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57891.json · Exploit
• https://osv.dev/vulnerability/openSUSE-SU-2025:20081-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:21139-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-57891 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-57891 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-57891 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-57891 · Security Note
• https://linux.oracle.com/errata/ELSA-2025-20480.html · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-57891 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-03508 · Security Note
• https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:21074-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-57891 · Vendor Advisory
• https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a · Patch
• https://linux.oracle.com/errata/ELSA-2025-20530.html · Vendor Advisory