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 не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: lwt: Fix return values of BPF xmit ops BPF encap ops can return different types of positive values, such like NET_RX_DROP, NET_XMIT_CN, NETDEV_TX_BUSY, and so on, from function skb_do_redirect and bpf_lwt_xmit_reroute. At the xmit hook, such return values would be treated implicitly as LWTUNNEL_XMIT_CONTINUE in ip(6)_finish_output2. When this happens, skbs that have been freed would continue to the neighbor subsystem, causing use-after-free bug and kernel crashes. To fix the incorrect behavior, skb_do_redirect return values can be simply discarded, the same as tc-egress behavior. On the other hand, bpf_lwt_xmit_reroute returns useful errors to local senders, e.g. PMTU information. Thus convert its return values to avoid the conflict with LWTUNNEL_XMIT_CONTINUE.
Засегнати продукти
- Linux Linux: 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди 67f8f2bae8e7ac72e09def2b667e44704c4d1ee1; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди a97f221651fcdc891166e9bc270e3d9bfa5a0080; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди e3f647e4b642f9f6d32795a16f92c116c138d2af; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди 065d5f17096ec9161180e2c890afdff4dc6125f2; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди d68c17402442f5f494a2c3ebde5cb82f6aa9160a; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди 65583f9e070db7bece20710cfa2e3daeb0b831d9; 3a0af8fd61f90920f6fa04e4f1e9a6a73c1b4fd2 преди 29b22badb7a84b783e3a4fffca16f7768fb31205
- Linux Linux: 4.10; преди 4.10; 5.4.257 до 5.4.*; 5.10.195 до 5.10.*; 5.15.132 до 5.15.*; 6.1.53 до 6.1.*; 6.4.16 до 6.4.*; 6.5.3 до 6.5.*; от 6.6 нататък
Вид слабост
История
- 17 септември 2025 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2023-53338
- https://nvd.nist.gov/vuln/detail/CVE-2023-53338
- https://git.kernel.org/stable/c/67f8f2bae8e7ac72e09def2b667e44704c4d1ee1
- https://git.kernel.org/stable/c/a97f221651fcdc891166e9bc270e3d9bfa5a0080
- https://git.kernel.org/stable/c/e3f647e4b642f9f6d32795a16f92c116c138d2af
- https://git.kernel.org/stable/c/065d5f17096ec9161180e2c890afdff4dc6125f2
- https://git.kernel.org/stable/c/d68c17402442f5f494a2c3ebde5cb82f6aa9160a
- https://git.kernel.org/stable/c/65583f9e070db7bece20710cfa2e3daeb0b831d9
- https://git.kernel.org/stable/c/29b22badb7a84b783e3a4fffca16f7768fb31205