Yüksek CVSS 7.8
CVE-2024-53057: Linux Kernel: serbest bırakılmış belleğin kullanımı
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT In qdisc_tree_reduce_backlog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major handle ffff: Budimir Markovic found that for qdiscs like DRR that maintain an active class list, it will cause a UAF with a dangling class pointer. In 066a3b5b2346, the concern was to avoid iterating over the ingress qdisc since its parent is itself. The proper fix is to stop when parent TC_H_ROOT is reached because the only way to retrieve ingress is when a hierarchy which does not contain a ffff: major handle call into qdisc_lookup with TC_H_MAJ(TC_H_ROOT). In the scenario where major ffff: is an egress qdisc in any of the tree levels, the updates will also propagate to TC_H_ROOT, which then the iteration must stop. net/sched/sch_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- %0,29 (yüzdelik 22)
- CWE
- CWE-416
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 2.6.25 | — | 4.19.323 |
| linux-linux-kernel | 4.20 | — | 5.4.285 |
| linux-linux-kernel | 5.5 | — | 5.10.229 |
| linux-linux-kernel | 5.11 | — | 5.15.171 |
| linux-linux-kernel | 5.16 | — | 6.1.116 |
| linux-linux-kernel | 6.2 | — | 6.6.60 |
| linux-linux-kernel | 6.7 | — | 6.11.7 |
| linux-linux-kernel | 6.12 | 6.12 | — |
| linux-linux-kernel | 6.12 | 6.12 | — |
| linux-linux-kernel | 6.12 | 6.12 | — |
| linux-linux-kernel | 6.12 | 6.12 | — |
| linux-linux-kernel | 6.12 | 6.12 | — |