Tracker / CVE-2023-3776
CVE-2023-3776
High 7.8
A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_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 0323bce598eea038714f941ce2b22541c46d488f.
Affected products and versions
| debian | debian_linux |
|---|---|
| linux | linux_kernel |
| linux | linux_kernel · 2.6.12 → 4.14.322 |
| linux | linux_kernel · 4.15 → 4.19.291 |
| linux | linux_kernel · 4.20 → 5.4.251 |
| linux | linux_kernel · 5.11 → 5.15.121 |
| linux | linux_kernel · 5.16 → 6.1.40 |
| linux | linux_kernel · 5.5 → 5.10.188 |
| linux | linux_kernel · 6.2 → 6.4.5 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.