CVE-2022-49004
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
riscv: Sync efi page table's kernel mappings before switching
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b91540d52a08b65eb6a2b09132e1bd54fa82754c | affected | git | fa7a7d185ef380546b4b1fed6f84f31dbae8cec7 | Unavailable | None listed |
| b91540d52a08b65eb6a2b09132e1bd54fa82754c | affected | git | 96f479383d92944406d4b3f2bc03c2f640def9f1 | Unavailable | None listed |
| b91540d52a08b65eb6a2b09132e1bd54fa82754c | affected | git | 3f105a742725a1b78766a55169f1d827732e62b8 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.10 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.10 | Unavailable | None listed |
| 5.15.82 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.0.12 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |