CVE-2024-50199

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: skip HugeTLB pages for unuse_vma I got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The problem can be reproduced by the following steps: 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory. 2. Swapout the above anonymous memory. 3. run swapoff and we will get a bad pud error in kernel message: mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7) We can tell that pud_clear_bad is called by pud_none_or_clear_bad in unuse_pud_range() by ftrace. And therefore the HugeTLB pages will never be freed because we lost it from page table. We can skip HugeTLB pages for unuse_vma to fix it.

Package Linux Kernel
Published 2024-11-08
Last modified 2025-11-03
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 2.6.36 and later are affected. Fixed in 5.4.285, 5.10.228, 5.15.169, 6.1.114, 6.6.58, 6.11.5, 6.12 and their respective stable series.

Affected from
≥ 2.6.36
Fixed in
✓ 5.4.285 5.4.x ✓ 5.10.228 5.10.x ✓ 5.15.169 5.15.x ✓ 6.1.114 6.1.x ✓ 6.6.58 6.6.x ✓ 6.11.5 6.11.x ✓ 6.12

References

The following references provide additional information about CVE-2024-50199 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

7 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2024-50199?

    CVE-2024-50199 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.36 onward and has been patched in 5.4.285, 5.10.228, 5.15.169 and others. CVE-2024-50199 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-50199?

    CVE-2024-50199 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-2024-50199?

    Yes — CVE-2024-50199 has been patched. Fixed versions include 5.4.285, 5.10.228, 5.15.169 and others. If you are running Linux kernel 2.6.36 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-50199 actively exploited?

    No — CVE-2024-50199 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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