ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.12
References 7
git.kernel.org
- stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724
- stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b
- stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4
- stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d
- stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8
- stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01
- stable/c/1ecd5b129252249b9bc03d7645a7bda512747277