CVE-2021-3715
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedMar 2, 2022
First seenMar 2, 2022
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel4.4.218, 4.9.218, 4.14.175, 4.19.114, 5.4.29, 5.5.14 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.18 ≤ v < 4.4.218, 4.5 ≤ v < 4.9.218, 4.10 ≤ v < 4.14.175, 4.15 ≤ v < 4.19.114, 4.20 ≤ v < 5.4.29, 5.5.0 ≤ v < 5.5.14 | 4.4.218, 4.9.218, 4.14.175, 4.19.114, 5.4.29, 5.5.14 |
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