vulnerability
Red Hat: CVE-2021-3715: CVE-2021-3715 kernel: use-after-free in route4_change() in net/sched/cls_route.c (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Sep 7, 2021 | Sep 8, 2021 | Feb 20, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Sep 7, 2021
Added
Sep 8, 2021
Modified
Feb 20, 2026
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
redhat-upgrade-kernelredhat-upgrade-kernel-rt
References
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