CVE-2023-31248
High
Description
Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 5, 2023
First seenJul 5, 2023
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel5.10.188, 5.15.121, 6.1.39, 6.4.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.9 ≤ v < 5.10.188, 5.11 ≤ v < 5.15.121, 5.16 ≤ v < 6.1.39, 6.2 ≤ v < 6.4.4 | 5.10.188, 5.15.121, 6.1.39, 6.4.4 |
| fedoraproject fedora | 37, 38 | — |
| debian debian_linux | 11.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04, 22.04 | — |
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