PT-2024-5438 · Linux+1 · Linux Kernel+1

Syzbot · Published 2024-06-05 · Updated 2024-07-08 · CVE-2024-39477

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 The issue is related to the mm/hugetlb module in the Linux kernel, where the function vma needs reservation() can return -ENOMEM if allocate file region entries() fails to allocate the file region struct for the reservation. This can cause a problem when calling vma add reservation() and lead to a denial of service. The unmap hugepage range() function is also affected. If vma needs reservation() returns -ENOMEM, the hugetlb restore reserve flag is cleared to prevent free huge folio() from incrementing the resv count.

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

Exploit

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

CWE-253

Related Identifiers

BDU:2024-06087

CVE-2024-39477

Affected Products

Astra Linux

Linux Kernel

References · 21

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39477.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2024-39477 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-39477 · Security Note
• https://cve.org/CVERecord?id=CVE-2024-39477 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-39477 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-39477 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2024-39477 · Vendor Advisory
• https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-39477 · Vendor Advisory
• https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7 · Patch
• https://osv.dev/vulnerability/CVE-2024-39477 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-06087 · Security Note
• https://lore.kernel.org/linux-cve-announce/2024070519-CVE-2024-39477-5c3f@gregkh · Note
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.9.5 · Note
• https://docs.bell-sw.com/security/cves/CVE-2024-39477 · Note