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CVE-2026-23124: Linux, състезание за ресурс

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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Атакува се

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Време до експлоатация

CVE радар: още уязвимости от този вид

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ipv6: annotate data-race in ndisc_router_discovery() syzbot found that ndisc_router_discovery() could read and write in6_dev->ra_mtu without holding a lock [1] This looks fine, IFLA_INET6_RA_MTU is best effort. Add READ_ONCE()/WRITE_ONCE() to document the race. Note that we might also reject illegal MTU values (mtu < IPV6_MIN_MTU || mtu > skb->dev->mtu) in a future patch. [1] BUG: KCSAN: data-race in ndisc_router_discovery / ndisc_router_discovery read to 0xffff888119809c20 of 4 bytes by task 25817 on cpu 1: ndisc_router_discovery+0x151d/0x1c90 net/ipv6/ndisc.c:1558 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ... write to 0xffff888119809c20 of 4 bytes by task 25816 on cpu 0: ndisc_router_discovery+0x155a/0x1c90 net/ipv6/ndisc.c:1559 ndisc_rcv+0x2ad/0x3d0 net/ipv6/ndisc.c:1841 icmpv6_rcv+0xe5a/0x12f0 net/ipv6/icmp.c:989 ip6_protocol_deliver_rcu+0xb2a/0x10d0 net/ipv6/ip6_input.c:438 ip6_input_finish+0xf0/0x1d0 net/ipv6/ip6_input.c:489 NF_HOOK include/linux/netfilter.h:318 [inline] ip6_input+0x5e/0x140 net/ipv6/ip6_input.c:500 ip6_mc_input+0x27c/0x470 net/ipv6/ip6_input.c:590 dst_input include/net/dst.h:474 [inline] ip6_rcv_finish+0x336/0x340 net/ipv6/ip6_input.c:79 ... value changed: 0x00000000 -> 0xe5400659

Засегнати продукти

  • Linux Linux: 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди 4630897eb1a039b5d7b737b8dc9521d9d4b568b5; 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди 2619499169fb1c2ac4974b0f2d87767fb543582b; 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди fad8f4ff7928f4d52a062ffdcffa484989c79c47; 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди 2a2b9d25f801afecf2f83cacce98afa8fd73e3c9; 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди e3c1040252e598f7b4e33a42dc7c38519bc22428; 49b99da2c9ce13ffcd93fe3a0f5670791c1d76f7 преди 9a063f96d87efc3a6cc667f8de096a3d38d74bb5
  • Linux Linux: 5.15; преди 5.15; 5.15.199 до 5.15.*; 6.1.162 до 6.1.*; 6.6.122 до 6.6.*; 6.12.68 до 6.12.*; 6.18.8 до 6.18.*; 6.19 до *

Вид слабост

История

  • 14 февруари 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-23124: Linux, състезание за ресурс | freedomonline.bg