7.8
Élevée
CVE-2023-4623 A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be…
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.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| kernel 2.6 | 2.6.12 → < 6.6 | 6.6 |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 | premières → < 1.1 | 1.1 |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.0 → < 3.1.5 | 3.1.5 |
Références
- git.kernel.org git.kernel.org
- kernel.dance kernel.dance
- lists.debian.org lists.debian.org
- packetstormsecurity.com packetstormsecurity.com
- lists.debian.org lists.debian.org
Chronologie
- Publiée
- Dernière modification
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