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Vulnerability · Published Feb 27, 2024 · Assigned by Linux

CVE-2021-46953ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

Medium 6.7

In plain English

A medium-severity security flaw 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 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)6.7Medium
Exploit odds (30 days)0.2%top 84.7% 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: ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier. However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier). Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.10.38-1DEBIAN-CVE-2021-46953
Debian:13linux5.10.38-1DEBIAN-CVE-2021-46953
Debian:14linux5.10.38-1DEBIAN-CVE-2021-46953
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-46953
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-46953
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-46953

Affected products (as reported)

VendorProductVersions
Linux Linux ca9ae5ec4ef0ed13833b03297ab319676965492c – before c3385a9122f8db15b453e07bfc88117fce7f3724ca9ae5ec4ef0ed13833b03297ab319676965492c – before 7b2162db1498c71962a4bb2f776fa4e76d4d305bca9ae5ec4ef0ed13833b03297ab319676965492c – before 504632a3577a049dd9bb7aabae5b4476f9c586b4ca9ae5ec4ef0ed13833b03297ab319676965492c – before e0f2d86481eaa83df33b0793f75212919db7a19dca9ae5ec4ef0ed13833b03297ab319676965492c – before 42e69521ee1fa5abf21f478d147d06bbfe6bf6a8ca9ae5ec4ef0ed13833b03297ab319676965492c – before 596e079c362ac17ed02aa1b99fdc444d62072a01ca9ae5ec4ef0ed13833b03297ab319676965492c – before 1ecd5b129252249b9bc03d7645a7bda512747277
Linux Linux 4.12

References