Orta CVSS 5.5
CVE-2023-53189: Linux Kernel: güvenlik açığı
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: ipv6/addrconf: fix a potential refcount underflow for idev Now in addrconf_mod_rs_timer(), reference idev depends on whether rs_timer is not pending. Then modify rs_timer timeout. There is a time gap in [1], during which if the pending rs_timer becomes not pending. It will miss to hold idev, but the rs_timer is activated. Thus rs_timer callback function addrconf_rs_timer() will be executed and put idev later without holding idev. A refcount underflow issue for idev can be caused by this. if (!timer_pending(&idev->rs_timer)) in6_dev_hold(idev); <--------------[1] mod_timer(&idev->rs_timer, jiffies + when); To fix the issue, hold idev if mod_timer() return 0.
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
- %0,17 (yüzdelik 6)
- CWE
- CWE-191
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 3.10.105 | — | 4.14.322 |
| linux-linux-kernel | 4.15 | — | 4.19.291 |
| linux-linux-kernel | 4.20 | — | 5.4.251 |
| linux-linux-kernel | 5.5 | — | 5.10.188 |
| linux-linux-kernel | 5.11 | — | 5.15.121 |
| linux-linux-kernel | 5.16 | — | 6.1.40 |
| linux-linux-kernel | 6.2 | — | 6.4.5 |
| linux-linux-kernel | 6.5 | 6.5 | — |