CVE-2021-47521
High
CVE-2021-47521
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.
Exploit probability
0.2%
Published
May 24, 2024
Required by
Not available
Last source change
March 15, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2021-47521
View original source
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6bec
- https://git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2a
- https://git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45
- https://git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039ce
- https://git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288
- https://git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36
- https://git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4
- https://git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aa