CVE - CVE-2021-46953

CVE-ID
CVE-2021-46953	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 URL:https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 MISC:https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 URL:https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 MISC:https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 URL:https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 MISC:https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 URL:https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 MISC:https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b URL:https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b MISC:https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 URL:https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 MISC:https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d URL:https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d
Assigning CNA
kernel.org
Date Record Created
20240225	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240225)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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