💣Exploit CVE-2024-39477 - In the Linux kernel, the following vulnerability h

[Maksim]

CVE ID : CVE-2024-39477
Published : July 5, 2024, 7:15 a.m. | 7 hours, 16 minutes ago
Description : 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/00.../T/#ma5983bc1ab18a54910da83416b3f89f3c7ee43aa
Severity: 0.0 | NA
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