vulnerability
Ubuntu: (CVE-2021-3715): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Mar 2, 2022 | Nov 19, 2024 | Sep 5, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Mar 2, 2022
Added
Nov 19, 2024
Modified
Sep 5, 2025
Description
A flaw was found in the "Routing decision" classifier in the Linux kernel's Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition. This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Solutions
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-fipsubuntu-upgrade-linux-aws-hweubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-fipsubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-hweubuntu-upgrade-linux-kvmubuntu-upgrade-linux-lts-xenialubuntu-upgrade-linux-oem-osp1ubuntu-upgrade-linux-oracleubuntu-upgrade-linux-raspi2ubuntu-upgrade-linux-snapdragon
References
- CVE-2021-3715
- https://attackerkb.com/topics/CVE-2021-3715
- CWE-416
- URL-https://access.redhat.com/security/cve/CVE-2021-3715
- URL-https://git.kernel.org/linus/ef299cc3fa1a9e1288665a9fdc8bff55629fd359
- URL-https://www.cve.org/CVERecord?id=CVE-2021-3715
- URL-https://www.openwall.com/lists/oss-security/2021/09/07/1
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