What is CVE-2024-44963?

CVE-2024-44963 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.11 onward and patched in 6.6.64, 6.10.5 and 6.11. CVE-2024-44963 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-44963?

CVE-2024-44963 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-2024-44963?

Yes, CVE-2024-44963 has been patched. Fixed versions include 6.6.64, 6.10.5 and 6.11. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-44963 actively exploited?

CVE-2024-44963 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-44963

Medium

In the Linux kernel, the following vulnerability has been resolved: btrfs: do not BUG_ON() when freeing tree block after error When freeing a tree block, at btrfs_free_tree_block(), if we fail to create a delayed reference we don't deal with the error and just do a BUG_ON(). The error most likely to happen is -ENOMEM, and we have a comment mentioning that only -ENOMEM can happen, but that is not true, because in case qgroups are enabled any error returned from btrfs_qgroup_trace_extent_post() (can be -EUCLEAN or anything returned from btrfs_search_slot() for example) can be propagated back to btrfs_free_tree_block(). So stop doing a BUG_ON() and return the error to the callers and make them abort the transaction to prevent leaking space. Syzbot was triggering this, likely due to memory allocation failure injection.

Package Linux Kernel

Published 2024-09-04

Last modified 2024-12-09

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

Affected versions

Linux kernel versions 4.11 and later are affected. Fixed in 6.6.64, 6.10.5, 6.11 and their respective stable series.

Affected from

≥ 4.11

Fixed in

✓ 6.6.64 6.6.x ✓ 6.10.5 6.10.x ✓ 6.11

References

The following references provide additional information about CVE-2024-44963 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/22d907bcd283d69d5e60497fc0d51969545c583b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/98251cd60b4d702a8a81de442ab621e83a3fb24f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/bb3868033a4cccff7be57e9145f2117cbdc91c11
Patch

Details

CVE ID CVE-2024-44963

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-09-04

Modified 2024-12-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-44963?

CVE-2024-44963 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.11 onward and has been patched in 6.6.64, 6.10.5 and 6.11. CVE-2024-44963 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-44963?

CVE-2024-44963 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-2024-44963?

Yes — CVE-2024-44963 has been patched. Fixed versions include 6.6.64, 6.10.5 and 6.11. If you are running Linux kernel 4.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-44963 actively exploited?

No — CVE-2024-44963 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.