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CVE-2026-98241: Linux

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: ipv6: xfrm: use full sockets in local error paths xfrm6_local_rxpmtu() and xfrm6_local_error() dereference skb->sk as if it always pointed at a full IPv6 socket. That is not guaranteed. TCP SYN-ACK skbs can be owned by a TCP_NEW_SYN_RECV request_sock while the output path itself is driven by the full listener. If rerouting selects an IPv6 XFRM tunnel route with a lower MTU, the local PMTU/error handling path can reach these callbacks with that mini-socket still attached to the skb. The callbacks then miscast the request socket as a full inet/IPv6 socket and can read beyond the request_sock allocation when they access inet_sock or ipv6_pinfo state. Resolve the owner with skb_to_full_sk() in both callbacks and bail out when no full socket is attached. This matches the surrounding XFRM IPv6 PMTU/error logic, which already reasons about full sockets with skb_to_full_sk().

    Засегнати продукти

    • Linux Linux: dd767856a36e00b631d65ebc4bb81b19915532d6 преди b1a88633c36d2cbc3831382f3846754d344276fd; dd767856a36e00b631d65ebc4bb81b19915532d6 преди 904a0e827d0d7189271a3a2eb648293809f25efc; dd767856a36e00b631d65ebc4bb81b19915532d6 преди 675919e08ce266b8cac11fd9af29170e762a480f; dd767856a36e00b631d65ebc4bb81b19915532d6 преди 60459c670329d586a58db5d8f811fa5accfe4862; dd767856a36e00b631d65ebc4bb81b19915532d6 преди ca3d68c3213475b53db6647e159dc73bd1af5ab1; dd767856a36e00b631d65ebc4bb81b19915532d6 преди 4c030a0400ebfd2318361c923a88103b2c67c49f; dd767856a36e00b631d65ebc4bb81b19915532d6 преди c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8; dd767856a36e00b631d65ebc4bb81b19915532d6 преди 6973a21ee73c5567f883813c8ef414774b45892f
    • Linux Linux: 3.2; преди 3.2; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.112 до 6.12.*; 6.18.54 до 6.18.*; 7.2.8 до 7.2.*; от 7.3 нататък

    История

    • 6 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98241: Linux | freedomonline.bg