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Debian Security Bug TrackerDEBIANCVE:CVE-2023-52576

HistoryMar 02, 2024 - 10:15 p.m.

CVE-2023-52576

2024-03-0222:15:49

Debian Security Bug Tracker

security-tracker.debian.org

linux kernel

vulnerability

resolved

cve-2023-52576

memblock_free_late

use after free

kasan

kfence

bug

kernel panic

memblock allocator

ima_free_kexec_buffer

7.5 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.

OSVersionArchitecturePackageVersionFilename
Debian12alllinux< 6.1.64-1linux_6.1.64-1_all.deb
Debian11alllinux< 5.10.218-1linux_5.10.218-1_all.deb
Debian999alllinux< 6.5.6-1linux_6.5.6-1_all.deb
Debian13alllinux< 6.5.6-1linux_6.5.6-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	linux	< 6.1.64-1	linux_6.1.64-1_all.deb
Debian	11	all	linux	< 5.10.218-1	linux_5.10.218-1_all.deb
Debian	999	all	linux	< 6.5.6-1	linux_6.5.6-1_all.deb
Debian	13	all	linux	< 6.5.6-1	linux_6.5.6-1_all.deb