CVE-2026-98164
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
KVM: x86/mmu: Check write tracking in all address spaces
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Check write tracking in all address spaces kvm_gfn_is_write_tracked() checks only the supplied memslot, but page tracking is per-address-space and shadow pages are shared across all address spaces. With SMM, a GFN can therefore be write-tracked in one address space and appear untracked through the other. Check the supplied slot first, then the slot for the other address space. This ensures all callers honor write tracking regardless of the active address space. In particular, it prevents mmu_try_to_unsync_pages() from marking an upper-level shadow page unsync and eventually triggering the BUG in pte_list_remove(). [invert direction of the conditional. - Paolo]
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) |
|---|---|---|---|---|---|
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | 09aa68552d2542cc6c23edd1568ac265dc5d886f | Unavailable | None listed |
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | 429b6f43b4d8c98988fdca99e02dc156134e3d77 | Unavailable | None listed |
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | d8636c8f9f95d0fd1e2f6f1cad0d5757aa6f212a | Unavailable | None listed |
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | c0a9bd5fca0b5f2dea32b0fc31350e71e8648112 | Unavailable | None listed |
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | ec8fcaf354c1cbb36755d48e9f5a00c9591349e5 | Unavailable | None listed |
| 699023e239658e62da6f42f47d31b54788521ec1 | affected | git | 0f38453cdb2e17566ccb7c0f3dabd5bd21caca26 | 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) |
|---|---|---|---|---|---|
| 4.2 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.2 | Unavailable | None listed |
| 6.1.187 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.156 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.108 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.49 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.13 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |