CVE-2024-50115

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory Ignore nCR3[4:0] when loading PDPTEs from memory for nested SVM, as bits 4:0 of CR3 are ignored when PAE paging is used, and thus VMRUN doesn't enforce 32-byte alignment of nCR3. In the absolute worst case scenario, failure to ignore bits 4:0 can result in an out-of-bounds read, e.g. if the target page is at the end of a memslot, and the VMM isn't using guard pages. Per the APM: The CR3 register points to the base address of the page-directory-pointer table. The pa...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= e4e517b4be019787ada4cbbce2f04570c21b0cbd < 76ce386feb14ec9a460784fcd495d8432acce7a5, >= e4e517b4be019787ada4cbbce2f04570c21b0cbd < 58cb697d80e669c56197f703e188867c8c54c494, >= e4e517b4be019787ada4cbbce2f04570c21b0cbd < 6876793907cbe19d42e9edc8c3315a21e06c32ae, >= e4e517b4be019787ada4cbbce2f04570c21b0cbd < 2c4adc9b192a0815fe58a62bc0709449416cc884, >= e4e517b4be019787ada4cbbce2f04570c21b0cbd < 426682afec71ea3f889b972d038238807b9443e4, >= e4e517b4be019787ada4cbbce2f04570c21b0cbd < f559b2e9c5c5308850544ab59396b7d53cfc67bd, >= 3.2, >= 3.2 < 5.10.229, >= 5.11 < 5.15.170, >= 5.16 < 6.1.115, >= 6.2 < 6.6.59, >= 6.7 < 6.11.6, 6.12

Fixed versions

5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE

CWE-125