Orta CVSS 5.5
CVE-2024-49948: Linux Kernel: güvenlik açığı
Açıklama (NVD)
In the Linux kernel, the following vulnerability has been resolved: net: add more sanity checks to qdisc_pkt_len_init() One path takes care of SKB_GSO_DODGY, assuming skb->len is bigger than hdr_len. virtio_net_hdr_to_skb() does not fully dissect TCP headers, it only make sure it is at least 20 bytes. It is possible for an user to provide a malicious 'GSO' packet, total length of 80 bytes. - 20 bytes of IPv4 header - 60 bytes TCP header - a small gso_size like 8 virtio_net_hdr_to_skb() would declare this packet as a normal GSO packet, because it would see 40 bytes of payload, bigger than gso_size. We need to make detect this case to not underflow qdisc_skb_cb(skb)->pkt_len.
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
- %0,29 (yüzdelik 22)
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 3.9 | — | 4.19.323 |
| linux-linux-kernel | 4.20 | — | 5.4.285 |
| linux-linux-kernel | 5.5 | — | 5.10.227 |
| linux-linux-kernel | 5.11 | — | 5.15.168 |
| linux-linux-kernel | 5.16 | — | 6.1.113 |
| linux-linux-kernel | 6.2 | — | 6.6.55 |
| linux-linux-kernel | 6.7 | — | 6.10.14 |
| linux-linux-kernel | 6.11 | — | 6.11.3 |
| linux-linux-kernel | 6.12 | 6.12 | — |