Yüksek CVSS 7.8
CVE-2026-23359: Linux Kernel: sınır dışı yazma
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix stack-out-of-bounds write in devmap get_upper_ifindexes() iterates over all upper devices and writes their indices into an array without checking bounds. Also the callers assume that the max number of upper devices is MAX_NEST_DEV and allocate excluded_devices[1+MAX_NEST_DEV] on the stack, but that assumption is not correct and the number of upper devices could be larger than MAX_NEST_DEV (e.g., many macvlans), causing a stack-out-of-bounds write. Add a max parameter to get_upper_ifindexes() to avoid the issue. When there are too many upper devices, return -EOVERFLOW and abort the redirect. To reproduce, create more than MAX_NEST_DEV(8) macvlans on a device with an XDP program attached using BPF_F_BROADCAST | BPF_F_EXCLUDE_INGRESS. Then send a packet to the device to trigger the XDP redirect path.
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
- %0,14 (yüzdelik 3)
- CWE
- CWE-787
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 5.15.1 | — | 5.15.203 |
| linux-linux-kernel | 5.16 | — | 6.1.167 |
| linux-linux-kernel | 6.2 | — | 6.6.130 |
| linux-linux-kernel | 6.7 | — | 6.12.77 |
| linux-linux-kernel | 6.13 | — | 6.18.17 |
| linux-linux-kernel | 6.19 | — | 6.19.7 |
| linux-linux-kernel | 5.15 | 5.15 | — |
| 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 | — |
| linux-linux-kernel | 7.0 | 7.0 | — |