Ubuntu.comUB:CVE-2021-47232CVE-2021-47232
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
15.5%
In the Linux kernel, the following vulnerability has been resolved: can:
j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a
Use-after-Free found by the syzbot. The problem is that a skb is taken from
the per-session skb queue, without incrementing the ref count. This leads
to a Use-after-Free if the skb is taken concurrently from the session queue
due to a CTS.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure-5.4 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-bluefield | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gcp | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-gcp-5.4 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-gkeop | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-hwe-5.4 | < any | UNKNOWN |
References
git.kernel.org/linus/2030043e616cab40f510299f09b636285e0a3678 (5.13-rc7)
git.kernel.org/stable/c/1071065eeb33d32b7d98c2ce7591881ae7381705
git.kernel.org/stable/c/2030043e616cab40f510299f09b636285e0a3678
git.kernel.org/stable/c/22cba878abf646cd3a02ee7c8c2cef7afe66a256
git.kernel.org/stable/c/509ab6bfdd0c76daebbad0f0af07da712116de22
launchpad.net/bugs/cve/CVE-2021-47232
nvd.nist.gov/vuln/detail/CVE-2021-47232
security-tracker.debian.org/tracker/CVE-2021-47232
www.cve.org/CVERecord?id=CVE-2021-47232
Related
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
15.5%