CVE-2023-3777
High
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedSep 6, 2023
First seenSep 6, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.10.188, 5.15.123, 6.1.42, 6.4.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.9 ≤ v < 5.10.188, 5.11 ≤ v < 5.15.123, 5.16 ≤ v < 6.1.42, 6.2 ≤ v < 6.4.7 | 5.10.188, 5.15.123, 6.1.42, 6.4.7 |
| debian debian_linux | 12.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04, 22.04 | — |
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