PT-2024-3852 · Linux+8 · Linux Kernel+8
Gabe Kirkpatrick
·
Published
2024-02-23
·
Updated
2025-09-29
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CVE-2024-35791
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue is related to a use-after-free problem in the
svm register enc region() function. This occurs when the cache flush of converted pages is not done before dropping kvm->lock, allowing a different task to free the region and/or its array of pages. The problem is exacerbated by the dynamic allocation of region->pages. Flushing multiple pages under kvm->lock is necessary but unfortunate, as it is only needed on CPUs lacking coherency for encrypted memory. The entire flow is a rare slow path.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Almalinux
Astra Linux
Linuxmint
Linux Kernel
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu