What is CVE-2024-44957?

CVE-2024-44957 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 6.6 onward and patched in 6.6.46, 6.10.5 and 6.11. CVE-2024-44957 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-44957?

CVE-2024-44957 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-44957?

Yes, CVE-2024-44957 has been patched. Fixed versions include 6.6.46, 6.10.5 and 6.11. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-44957 actively exploited?

CVE-2024-44957 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2024-44957

Medium

In the Linux kernel, the following vulnerability has been resolved: xen: privcmd: Switch from mutex to spinlock for irqfds irqfd_wakeup() gets EPOLLHUP, when it is called by eventfd_release() by way of wake_up_poll(&ctx->wqh, EPOLLHUP), which gets called under spin_lock_irqsave(). We can't use a mutex here as it will lead to a deadlock. Fix it by switching over to a spin lock.

Package Linux Kernel

Published 2024-09-04

Last modified 2024-09-06

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-667

CVE-2024-44957 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.6 and later are affected. Fixed in 6.6.46, 6.10.5, 6.11 and their respective stable series.

Affected from

≥ 6.6

Fixed in

✓ 6.6.46 6.6.x ✓ 6.10.5 6.10.x ✓ 6.11

References

The following references provide additional information about CVE-2024-44957 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1c682593096a487fd9aebc079a307ff7a6d054a3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/49f2a5da6785b2dbde93e291cae037662440346e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c2775ae4d9227729f8ca9ee2a068f62a00d5ea9c
Patch

Details

CVE ID CVE-2024-44957

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-09-04

Modified 2024-09-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-44957?

CVE-2024-44957 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 6.6 onward and has been patched in 6.6.46, 6.10.5 and 6.11. CVE-2024-44957 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-44957?

CVE-2024-44957 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-44957?

Yes — CVE-2024-44957 has been patched. Fixed versions include 6.6.46, 6.10.5 and 6.11. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-44957 actively exploited?

No — CVE-2024-44957 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. View CWE-667 on MITRE CWE →