CVE-2023-39189
Medium
Description
A flaw was found in the Netfilter subsystem in the Linux kernel. The nfnl_osf_add_callback function did not validate the user mode controlled opt_num field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
SeverityMedium
CVSS5.1
Exploit probability—
Product
Linux Kernel
PublishedOct 9, 2023
First seenOct 9, 2023
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- linux linux_kernel6.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 6.6 | 6.6 |
| redhat enterprise_linux | 8.0, 9.0 | — |
| fedoraproject fedora | 38 | — |
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