CVE-2023-3609
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Use-after-free in Linux kernel's net/sched: cls_u32 component
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Kernel
- Vendor
- Linux
- Product
- Kernel
- Platforms
- Linux
- Default status
unaffected- Package
- kernel
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.14.0 | affected | semver | 4.14.322 | Unavailable | None listed |
| 4.15.0 | affected | semver | 4.19.291 | Unavailable | None listed |
| 4.20.0 | affected | semver | 5.4.248 | Unavailable | None listed |
| 5.5.0 | affected | semver | 5.10.185 | Unavailable | None listed |
| 5.11.0 | affected | semver | 5.15.118 | Unavailable | None listed |
| 5.16.0 | affected | semver | 6.1.35 | Unavailable | None listed |
| 6.2.0 | affected | semver | 6.3.9 | Unavailable | None listed |
| 6.4.0 | unaffected | semver | Unavailable | Unavailable | None listed |
| 04c55383fa5689357bcdd2c8036725a55ed632bc | unaffected | git | Unavailable | Unavailable | None listed |