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CVE-2026-43037: Linux, грешка в паметта

9.8

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 по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() Oskar Kjos reported the following problem. ip4ip6_err() calls icmp_send() on a cloned skb whose cb[] was written by the IPv6 receive path as struct inet6_skb_parm. icmp_send() passes IPCB(skb2) to __ip_options_echo(), which interprets that cb[] region as struct inet_skb_parm (IPv4). The layouts differ: inet6_skb_parm.nhoff at offset 14 overlaps inet_skb_parm.opt.rr, producing a non-zero rr value. __ip_options_echo() then reads optlen from attacker-controlled packet data at sptr[rr+1] and copies that many bytes into dopt->__data, a fixed 40-byte stack buffer (IP_OPTIONS_DATA_FIXED_SIZE). To fix this we clear skb2->cb[], as suggested by Oskar Kjos. Also add minimal IPv4 header validation (version == 4, ihl >= 5).

Засегнати продукти

  • Linux Linux: c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди ea9f65b27c8404e164848ebff1443310fd187629; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди d6621f60192fe10c047a4487be42a6f4c150707f; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди 2cc6e3b0fe0f0242d1f530a93a4924f48ab85ba5; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди a0c4ce9900a108eaf55d0f3b399cb55999647d39; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди 1063515ce15ff31065c4e7f8265f4c2fd3c54876; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди 590f622669b97eaf7b57a1de7b0a6e68c5d8b2c3; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди 4a622658f384b03560834cbe8ffcfe69a278f7c8; c4d3efafcc933fd2ffd169d7dc4f980393a13796 преди 2edfa31769a4add828a7e604b21cb82aaaa05925
  • Linux Linux: 2.6.22; преди 2.6.22; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.168 до 6.1.*; 6.6.134 до 6.6.*; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; от 7.0 нататък
  • Red Hat: още 27 продукта, добавени от Red Hat

    NVIDIA for RHEL 10, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat OpenShift Container Platform 4.12, Red Hat OpenShift Container Platform 4.13, Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15, Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18, Red Hat OpenShift Container Platform 4.19, Red Hat OpenShift Container Platform 4.20, Red Hat OpenShift Container Platform 4.21, Red Hat OpenShift Container Platform 4.22

Вид слабост

История

  • 1 май 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-43037: Linux, грешка в паметта | freedomonline.bg