vulnerability
Red Hat: CVE-2020-36694: use-after-free in the packet processing context (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:P/I:P/A:C) | May 21, 2023 | Aug 30, 2023 | Mar 27, 2026 |
Severity
6
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:C)
Published
May 21, 2023
Added
Aug 30, 2023
Modified
Mar 27, 2026
Description
An issue was discovered in netfilter in the Linux kernel before 5.10. There can be a use-after-free in the packet processing context, because the per-CPU sequence count is mishandled during concurrent iptables rules replacement. This could be exploited with the CAP_NET_ADMIN capability in an unprivileged namespace. NOTE: cc00bca was reverted in 5.12.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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