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Debian: CVE-2023-46813: linux -- security update

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Debian: CVE-2023-46813: linux -- security update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/27/2023
Created
01/09/2024
Added
01/08/2024
Modified
07/03/2024

Description

An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it.

Solution(s)

  • debian-upgrade-linux

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