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CVE-2026-23154: Linux, невалидиран вход

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Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: net: fix segmentation of forwarding fraglist GRO This patch enhances GSO segment handling by properly checking the SKB_GSO_DODGY flag for frag_list GSO packets, addressing low throughput issues observed when a station accesses IPv4 servers via hotspots with an IPv6-only upstream interface. Specifically, it fixes a bug in GSO segmentation when forwarding GRO packets containing a frag_list. The function skb_segment_list cannot correctly process GRO skbs that have been converted by XLAT, since XLAT only translates the header of the head skb. Consequently, skbs in the frag_list may remain untranslated, resulting in protocol inconsistencies and reduced throughput. To address this, the patch explicitly sets the SKB_GSO_DODGY flag for GSO packets in XLAT's IPv4/IPv6 protocol translation helpers (bpf_skb_proto_4_to_6 and bpf_skb_proto_6_to_4). This marks GSO packets as potentially modified after protocol translation. As a result, GSO segmentation will avoid using skb_segment_list and instead falls back to skb_segment for packets with the SKB_GSO_DODGY flag. This ensures that only safe and fully translated frag_list packets are processed by skb_segment_list, resolving protocol inconsistencies and improving throughput when forwarding GRO packets converted by XLAT.

Засегнати продукти

  • Linux Linux: 9fd1ff5d2ac7181844735806b0a703c942365291 преди 9122d7280b2303e835cdfec156bd932ac1f586ed; 9fd1ff5d2ac7181844735806b0a703c942365291 преди 2cbef9ea5a0ac51863ede35c45f26931a85d3888; 9fd1ff5d2ac7181844735806b0a703c942365291 преди 3e62db1e3140449608975e29e0979cc5f3b1cc07; 9fd1ff5d2ac7181844735806b0a703c942365291 преди 3d48d59235c494d34e32052f768393111c0806ef; 9fd1ff5d2ac7181844735806b0a703c942365291 преди 426ca15c7f6cb6562a081341ca88893a50c59fa2
  • Linux Linux: 5.6; преди 5.6; 6.1.167 до 6.1.*; 6.6.130 до 6.6.*; 6.12.69 до 6.12.*; 6.18.9 до 6.18.*; от 6.19 нататък
  • Siemens: още 4 продукта, добавени от Siemens

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIMATIC S7-1500 TM MFP - GNU/Linux subsystem, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Вид слабост

История

  • 14 февруари 2026 Публикувано

Други уязвимости в Linux Linux

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CVE-2026-23154: Linux, невалидиран вход | freedomonline.bg