Description
In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12 svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB. However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined. Move vmcb_mark_dirty() to callers and drop it for vmcb12. This also facilitates incoming refactoring that does not pass the entire VMCB to svm_copy_lbrs().
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d20c796ca3709801f8a7fa36e8770a3dd8ebd34e to < 165b08d2d1346dce5ed43db65e10f3194b9ae2feaffectedd20c796ca3709801f8a7fa36e8770a3dd8ebd34e to < 11d347b7edf5093d69aca72317300798a32bfd6baffectedd20c796ca3709801f8a7fa36e8770a3dd8ebd34e to < a3f0981a5a0e0bd51ad74cc7d9eed32294b24002affectedd20c796ca3709801f8a7fa36e8770a3dd8ebd34e to < 9efe23568806d1cd06f7d146f9b3037b8d585a9faffectedd20c796ca3709801f8a7fa36e8770a3dd8ebd34e to < b53ab5167a81537777ac780bbd93d32613aa3bdaaffected
Linux Linux
Default version status: affected
5.19affected0 to < 5.19unaffected6.6.160 to ≤ 6.6.*unaffected6.12.114 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/165b08d2d1346dce5ed43db65e10f3194b9ae2fe ↗
- https://git.kernel.org/stable/c/11d347b7edf5093d69aca72317300798a32bfd6b ↗
- https://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 ↗
- https://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f ↗
- https://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda ↗