CVE-2021-47521
Allegro SJA1000 Linux Kernel Use-After-Free Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead. Also we should check if at least one channel was set up.
INFO
Published Date :
May 24, 2024, 3:15 p.m.
Last Modified :
June 10, 2024, 6:41 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
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-2021-47521.
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-2021-47521 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47521 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.
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Initial Analysis by [email protected]
Jun. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6bec No Types Assigned https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6bec Patch Changed Reference Type https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2a No Types Assigned https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2a Patch Changed Reference Type https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45 No Types Assigned https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45 Patch Changed Reference Type https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039ce No Types Assigned https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039ce Patch Changed Reference Type https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288 No Types Assigned https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288 Patch Changed Reference Type https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36 No Types Assigned https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36 Patch Changed Reference Type https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4 No Types Assigned https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4 Patch Changed Reference Type https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aa No Types Assigned https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aa Patch Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.2 up to (excluding) 4.4.295 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.5 up to (excluding) 4.9.293 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.258 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.221 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.165 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.85 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.8 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 24, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: can: sja1000: fix use after free in ems_pcmcia_add_card() If the last channel is not available then "dev" is freed. Fortunately, we can just use "pdev->irq" instead. Also we should check if at least one channel was set up. Added Reference kernel.org https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aa [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6bec [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039ce [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47521 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-2021-47521
weaknesses.