Към съдържанието
Търсене

CVE-2026-98950: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect() bpf_flow_dissect() sanitizes the offsets returned by the BPF program with clamp_t(u16, ..., hlen). If hlen is bigger than 65535, the upper bound is truncated before the comparison. For instance, with hlen == 65536, both nhoff and thoff are forced to zero, even if the program returned sane values. This is the same class of bug as the one fixed in commit 99bda1ecbd56 ("flow_dissector: avoid u16 truncation of skb->len when computing thoff"). That fix does not cover the BPF path, because __skb_flow_dissect() returns early when a BPF flow dissector handles the packet. struct bpf_flow_keys stores nhoff and thoff as u16, so cap hlen to U16_MAX before clamping. Found by sashiko while reviewing the commit above.

    Засегнати продукти

    • Linux Linux: d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди 46d21495f633e38d40857401504ee51c56ffed2a; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди 6267f8304cbd9ec9f3f53bd227a733e07131492e; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди 99c59062172620a0bac4ae8cf37c83bb78772cdd; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди c44c02c930c6583b235a1937c69ff716c4bb4514; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди 3fb5ad2951a6df92c98f4f06cd70f20c50a2eb2a; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди cc18eb0e9941162c03f03f411ed7f6c339d91fa0; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди 61b43a51a55929ec040bee3ea51af2121b956d05; d58e468b1112dcd1d5193c0a89ff9f98b5a3e8b9 преди f202578efc738b883cfa04889eb97328914265a7
    • Linux Linux: 4.20; преди 4.20; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.57 до 6.18.*; 7.2.11 до 7.2.*; 7.3 до *

    История

    • 23 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98950: Linux | freedomonline.bg