Orta CVSS 5.5
CVE-2026-31422: Linux Kernel: NULL işaretçi başvurusu
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: net/sched: cls_flow: fix NULL pointer dereference on shared blocks flow_change() calls tcf_block_q() and dereferences q->handle to derive a default baseclass. Shared blocks leave block->q NULL, causing a NULL deref when a flow filter without a fully qualified baseclass is created on a shared block. Check tcf_block_shared() before accessing block->q and return -EINVAL for shared blocks. This avoids the null-deref shown below: ======================================================================= KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] RIP: 0010:flow_change (net/sched/cls_flow.c:508) Call Trace: tc_new_tfilter (net/sched/cls_api.c:2432) rtnetlink_rcv_msg (net/core/rtnetlink.c:6980) [...] =======================================================================
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS
- %0,12 (yüzdelik 2)
- CWE
- CWE-476
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 4.15 | — | 5.10.253 |
| linux-linux-kernel | 5.11 | — | 5.15.203 |
| linux-linux-kernel | 5.16 | — | 6.1.168 |
| linux-linux-kernel | 6.2 | — | 6.6.134 |
| linux-linux-kernel | 6.7 | — | 6.12.81 |
| linux-linux-kernel | 6.13 | — | 6.18.22 |
| linux-linux-kernel | 6.19 | — | 6.19.12 |
| linux-linux-kernel | 7.0 | 7.0 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |