CVE-2024-39477
- Source
- https://cve.org/CVERecord?id=CVE-2024-39477
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-39477.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-39477
- Downstream
- Published
- 2024-07-05T06:55:07Z
- Modified
- 2026-08-12T03:51:43Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- mm/hugetlb: do not call vma_add_reservation upon ENOMEM
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39477.json" }- References
-
- https://git.kernel.org/stable/c/8daf9c702ee7f825f0de8600abff764acfedea13
- https://git.kernel.org/stable/c/aa998f9dcb34c28448f86e8f5490f20d5eb0eac7
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39477.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-39477
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git