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]
References
Configurations
Configuration 1 (hide)
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History
07 Oct 2026, 07:17
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.1 |
02 Oct 2026, 21:08
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-670 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.2:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.2:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.2:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.2:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.2:rc5:*:*:*:*:*:* |
|
| First Time |
Linux
Linux linux Kernel |
|
| References | () https://git.kernel.org/stable/c/09aa68552d2542cc6c23edd1568ac265dc5d886f - Patch | |
| References | () https://git.kernel.org/stable/c/0f38453cdb2e17566ccb7c0f3dabd5bd21caca26 - Patch | |
| References | () https://git.kernel.org/stable/c/429b6f43b4d8c98988fdca99e02dc156134e3d77 - Patch | |
| References | () https://git.kernel.org/stable/c/c0a9bd5fca0b5f2dea32b0fc31350e71e8648112 - Patch | |
| References | () https://git.kernel.org/stable/c/d8636c8f9f95d0fd1e2f6f1cad0d5757aa6f212a - Patch | |
| References | () https://git.kernel.org/stable/c/ec8fcaf354c1cbb36755d48e9f5a00c9591349e5 - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
29 Sep 2026, 13:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-29 13:17
Updated : 2026-10-07 07:17
NVD link : CVE-2026-98164
Mitre link : CVE-2026-98164
CVE.ORG link : CVE-2026-98164
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-670
Always-Incorrect Control Flow Implementation