PT-2024-11867 · Linux+3 · Linux Kernel+3
Published
2022-11-21
·
Updated
2026-03-14
·
CVE-2022-49004
CVSS v3.1
5.5
Medium
| 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 arises from the EFI page table being initially created as a copy of the kernel page table. When VMAP STACK is enabled, kernel stacks are allocated in the vmalloc area. If the stack is allocated in a new PGD that was not present at the moment of the efi page table creation or not synced in a previous vmalloc fault, the kernel will take a trap when switching to the efi page table, resulting in a kernel panic. This is resolved by updating the efi kernel mappings before switching to the efi page table.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Debian
Linux Kernel
Red Os