PoC Index85,092 CVEs with PoCs

CVE-2023-3609

Use-after-free in Linux kernel's net/sched: cls_u32 component

HIGH 7.8EPSS 0.5%

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

Affected
Linux · Kernel
CVSS v3.1 NVD
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.49% chance of exploitation in the next 30 days, 41st percentile
Published
2023-07-21
Updated
2026-10-14

Proof-of-concept exploits (1)

Exploit collections (1)

Security advisories

References