ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure (Linux Linux)

CVE-2021-46953
MEDIUM 6.7

At a glance

Source
NVD
EPSS
EPSS 0.24 % · percentile 15 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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.

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected ca9ae5ec4ef0ed13833b03297ab319676965492c < c3385a9122f8db15b453e07bfc88117fce7f3724 ; affected ca9ae5ec4ef0ed13833b03297ab319676965492c < 7b2162db1498c71962a4bb2f776fa4e76d4d305b ; affected ca9ae5ec4ef0ed13833b03297ab319676965492c < 504632a3577a049dd9bb7aabae5b4476f9c586b4 ; affected ca9ae5ec4ef0ed13833b03297ab319676965492c < e0f2d86481eaa83df33b0793f75212919db7a19d ; affected ca9ae5ec4ef0ed13833b03297ab319676965492c < 42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 ; affected ca9ae5ec4ef0ed13833b03297ab319676965492c < 596e079c362ac17ed02aa1b99fdc444d62072a01
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 4.14.233 ≤ 4.14.* ; unaffected 4.19.191 ≤ 4.19.* ; unaffected 5.4.118 ≤ 5.4.* ; unaffected 5.10.36 ≤ 5.10.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD