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Vulnerability · Published Mar 2, 2024 · Assigned by Linux

CVE-2023-52576x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()

Medium 5.5

In plain English

A medium-severity use-after-free in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 87.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.64-1DEBIAN-CVE-2023-52576
Debian:13linux6.5.6-1DEBIAN-CVE-2023-52576
Debian:14linux6.5.6-1DEBIAN-CVE-2023-52576
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1014.14UBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2023-52576
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52576
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2023-52576

Affected products (as reported)

VendorProductVersions
Linux Linux fee3ff99bc67604fba77f19da0106f3ec52b1956 – before eef16bfdb212da60f5144689f2967fb25b051a2bfee3ff99bc67604fba77f19da0106f3ec52b1956 – before d2dfbc0e3b7a04c2d941421a958dc31c897fb204fee3ff99bc67604fba77f19da0106f3ec52b1956 – before 34cf99c250d5cd2530b93a57b0de31d3aaf8685b
Linux Linux 5.13

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References