CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: vxlan: use pskb_network_may_pull() in route_shortcircuit() route_shortcircuit() currently calls pskb_may_pull(skb, sizeof(struct iphdr)) (or ipv6hdr), which checks if bytes are available starting from skb->data. However, in vxlan_xmit(), skb->data points to the MAC header, so skb_network_offset(skb) is ETH_HLEN (14 bytes). Using pskb_may_pull(skb, 20) only checks 20 bytes from skb->data (which is 14 bytes MAC header + 6 bytes of IP header), leaving the rest of the IP header potentially un-pulled in non-linear frags. Subsequent dereferences of ip_hdr(skb)->daddr can read beyond the pulled linear buffer length. Fix this by using pskb_network_may_pull(), which adds skb_network_offset(skb) to the length check to ensure the full network header is present in the linear buffer.
Засегнати продукти
- Linux Linux: e4f67addf158f98f8197e08974966b18480dc751 преди c419af4924c1593500a40519730ed98575d04a3e; e4f67addf158f98f8197e08974966b18480dc751 преди 6bd0a3a1b5744166946f0c551a6665c3b46b05e4; e4f67addf158f98f8197e08974966b18480dc751 преди 214ba43faf106cb06cd3dd30999c5c809c868b53; e4f67addf158f98f8197e08974966b18480dc751 преди 42887be7c4cf283cce02cd0fb6411221167c8b6c; e4f67addf158f98f8197e08974966b18480dc751 преди aa0d31376d574ac858a40078431a77127bf04ee4; e4f67addf158f98f8197e08974966b18480dc751 преди ee799977d7941dbfb11049e17edd9eaf4f8820f7; e4f67addf158f98f8197e08974966b18480dc751 преди 4f3f96e771a20263635bb5e1307c112d613b4bbd; e4f67addf158f98f8197e08974966b18480dc751 преди 26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb
- Linux Linux: 3.8; преди 3.8; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-74473
- https://nvd.nist.gov/vuln/detail/CVE-2026-74473
- https://git.kernel.org/stable/c/c419af4924c1593500a40519730ed98575d04a3e
- https://git.kernel.org/stable/c/6bd0a3a1b5744166946f0c551a6665c3b46b05e4
- https://git.kernel.org/stable/c/214ba43faf106cb06cd3dd30999c5c809c868b53
- https://git.kernel.org/stable/c/42887be7c4cf283cce02cd0fb6411221167c8b6c
- https://git.kernel.org/stable/c/aa0d31376d574ac858a40078431a77127bf04ee4
- https://git.kernel.org/stable/c/ee799977d7941dbfb11049e17edd9eaf4f8820f7
- https://git.kernel.org/stable/c/4f3f96e771a20263635bb5e1307c112d613b4bbd
- https://git.kernel.org/stable/c/26bb2dd0a8839617e2c79ffbbe1923f8e4bab9fb