What is CVE-2024-39477?

CVE-2024-39477 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.9 onward and patched in 6.9.5 and 6.10. CVE-2024-39477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-39477?

CVE-2024-39477 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-2024-39477?

Yes, CVE-2024-39477 has been patched. Fixed versions include 6.9.5 and 6.10. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-39477 actively exploited?

CVE-2024-39477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-39477

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: do not call vma_add_reservation upon ENOMEM sysbot reported a splat [1] on __unmap_hugepage_range(). This is because vma_needs_reservation() can return -ENOMEM if allocate_file_region_entries() fails to allocate the file_region struct for the reservation. Check for that and do not call vma_add_reservation() if that is the case, otherwise region_abort() and region_del() will see that we do not have any file_regions. If we detect that vma_needs_reservation() returned -ENOMEM, we clear the hugetlb_restore_reserve flag as if this reservation was still consumed, so free_huge_folio() will not increment the resv count. [1] https://lore.kernel.org/linux-mm/[email protected]/T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa

Package Linux Kernel

Published 2024-07-05

Last modified 2024-11-21

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-770

CVE-2024-39477 is classified as CWE-770

See CWE-770 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.9 and later are affected. Fixed in 6.9.5, 6.10 and their respective stable series.

Affected from

≥ 6.9

Fixed in

✓ 6.9.5 6.9.x ✓ 6.10

References

2 total

Kernel Git
https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7

Mailing List Patch

Details

CVE ID CVE-2024-39477

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-07-05

Modified 2024-11-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-39477?

CVE-2024-39477 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.9 onward and has been patched in 6.9.5 and 6.10. CVE-2024-39477 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-39477?

CVE-2024-39477 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-2024-39477?

Yes. CVE-2024-39477 has been patched. Fixed versions include 6.9.5 and 6.10. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-39477 actively exploited?

No. CVE-2024-39477 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.