Ubuntu.comUB:CVE-2021-47521CVE-2021-47521
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 23.10 | noarch | linux | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 22.04 | noarch | linux-aws | < any | UNKNOWN |
References
git.kernel.org/linus/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45 (5.16-rc5)
git.kernel.org/stable/c/1a295fea90e1acbe80c6d4940f5ff856edcd6bec
git.kernel.org/stable/c/1dd5b819f7e406dc15bbc7670596ff25261aaa2a
git.kernel.org/stable/c/3ec6ca6b1a8e64389f0212b5a1b0f6fed1909e45
git.kernel.org/stable/c/474f9a8534f5f89841240a7e978bafd6e1e039ce
git.kernel.org/stable/c/923f4dc5df679f678e121c20bf2fd70f7bf3e288
git.kernel.org/stable/c/c8718026ba287168ff9ad0ccc4f9a413062cba36
git.kernel.org/stable/c/cbd86110546f7f730a1f5d7de56c944a336c15c4
git.kernel.org/stable/c/ccf070183e4655824936c0f96c4a2bcca93419aa
launchpad.net/bugs/cve/CVE-2021-47521
nvd.nist.gov/vuln/detail/CVE-2021-47521
security-tracker.debian.org/tracker/CVE-2021-47521
www.cve.org/CVERecord?id=CVE-2021-47521
Related
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%