6.7
MEDIUM
CVE-2021-46953
Intel ACPI Linux - Interrupt Validation Vulnerability
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.

INFO

Published Date :

Feb. 27, 2024, 7:04 p.m.

Last Modified :

April 10, 2024, 8:15 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Affected Products

The following products are affected by CVE-2021-46953 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-46953.

URL Resource
https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 Patch
https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 Patch
https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 Patch
https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 Patch
https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b Patch
https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 Patch
https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d Patch

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-46953 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-46953 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 28, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Apr. 10, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 No Types Assigned https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 Patch
    Changed Reference Type https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 No Types Assigned https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 Patch
    Changed Reference Type https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 No Types Assigned https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 Patch
    Changed Reference Type https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 No Types Assigned https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 Patch
    Changed Reference Type https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b No Types Assigned https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b Patch
    Changed Reference Type https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 No Types Assigned https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 Patch
    Changed Reference Type https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d No Types Assigned https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d Patch
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.12.0 up to (excluding) 4.14.233 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15.0 up to (excluding) 4.19.191 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20.0 up to (excluding) 5.4.118 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5.0 up to (excluding) 5.10.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11.0 up to (excluding) 5.11.20 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12.0 up to (excluding) 5.12.3
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2024

    Action Type Old Value New Value
    Added 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.
    Added Reference Linux https://git.kernel.org/stable/c/c3385a9122f8db15b453e07bfc88117fce7f3724 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/7b2162db1498c71962a4bb2f776fa4e76d4d305b [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/504632a3577a049dd9bb7aabae5b4476f9c586b4 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/e0f2d86481eaa83df33b0793f75212919db7a19d [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/596e079c362ac17ed02aa1b99fdc444d62072a01 [No types assigned]
    Added Reference Linux https://git.kernel.org/stable/c/1ecd5b129252249b9bc03d7645a7bda512747277 [No types assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-46953 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-46953 weaknesses.

CVSS31 - Vulnerability Scoring System
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