Updated: 2024-11-21 19:18:44.214436
Description:
A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | HIGH | 7.8 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| AlmaLinux 9.2 ESU | kernel | 5.14.0 | 7.8 | HIGH | Released | CLSA-2024:1712263970 | 2024-04-07 09:57:02 | |
| AlmaLinux 9.2 FIPS | kernel | 5.14.0 | 7.8 | HIGH | Released | CLSA-2024:1712570434 | 2024-04-08 10:43:30 | |
| CentOS 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Released | CLSA-2024:1705494430 | 2024-02-05 08:28:45 | |
| CentOS 7 ELS | kernel | 3.10.0 | 7.8 | HIGH | Released | CLSA-2024:1720468480 | 2024-07-23 17:28:56 | |
| CentOS 8.4 ELS | kernel | 4.18.0 | 7.8 | HIGH | Released | CLSA-2023:1701963303 | 2023-12-07 13:11:47 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 7.8 | HIGH | Released | CLSA-2023:1701962635 | 2023-12-07 13:11:48 | |
| CloudLinux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Ignored | 2024-10-09 04:10:37 | ||
| Oracle Linux 6 ELS | kernel | 2.6.32 | 7.8 | HIGH | Released | CLSA-2024:1705496067 | 2024-01-17 08:41:14 | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 7.8 | HIGH | Released | CLSA-2023:1698247974 | 2023-10-25 14:06:45 | |
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 7.8 | HIGH | Released | CLSA-2023:1698305104 | 2023-10-26 07:38:41 |