CVE - CVE-2022-49004

CVE-ID
CVE-2022-49004	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: riscv: Sync efi page table's kernel mappings before switching The EFI page table is initially created as a copy of the kernel page table. With VMAP_STACK enabled, kernel stacks are allocated in the vmalloc area: if the stack is allocated in a new PGD (one 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 when the vmalloc kernel stack is accessed, resulting in a kernel panic. Fix that by updating the efi kernel mappings before switching to the efi page table.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/3f105a742725a1b78766a55169f1d827732e62b8 URL:https://git.kernel.org/stable/c/3f105a742725a1b78766a55169f1d827732e62b8 MISC:https://git.kernel.org/stable/c/96f479383d92944406d4b3f2bc03c2f640def9f1 URL:https://git.kernel.org/stable/c/96f479383d92944406d4b3f2bc03c2f640def9f1 MISC:https://git.kernel.org/stable/c/fa7a7d185ef380546b4b1fed6f84f31dbae8cec7 URL:https://git.kernel.org/stable/c/fa7a7d185ef380546b4b1fed6f84f31dbae8cec7
Assigning CNA
kernel.org
Date Record Created
20240822	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240822)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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