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CVE-2026-80630: Linux

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.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring qlen Whenever fq_codel drops packets during peek, it calls qdisc_tree_reduce_backlog. An issue arises because it calls qdisc_tree_reduce_backlog before it reincrements the qlen. If qlen drops to zero, but peek returns an skb, the parent's qlen_notify callback will be executed even though fq_codel still has 1 packet on the queue and, thus, will mistakenly deactivate the parent's class causing issues like a recent report [1] and a wild memory access in qfq: [ 29.371146][ T360] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] SMP KASAN NOPTI [ 29.371666][ T360] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] [ 29.371987][ T360] CPU: 6 UID: 0 PID: 360 Comm: tc Not tainted 7.1.0-rc5-00285-gc530e5b2dbc6-dirty #82 PREEMPT(full) [ 29.372384][ T360] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 29.372620][ T360] RIP: 0010:qfq_deactivate_agg (include/linux/list.h:1029 (discriminator 2) include/linux/list.h:1043 (discriminator 2) net/sched/sch_qfq.c:1369 (discriminator 2) net/sched/sch_qfq.c:1395 (discriminator 2)) sch_qfq [ 29.373544][ T360] RSP: 0018:ffff888102417370 EFLAGS: 00010216 [ 29.373800][ T360] RAX: 0000000000000000 RBX: ffff88811224d568 RCX: dffffc0000000000 [ 29.374079][ T360] RDX: 1ffff11021fe1543 RSI: ffff88810ff0aa00 RDI: dffffc0000000000 [ 29.374368][ T360] RBP: ffff88811224c280 R08: dead000000000122 R09: 1bd5a00000000024 [ 29.374649][ T360] R10: fffffbfff7940329 R11: fffffbfff7940329 R12: 0000000000000000 [ 29.374926][ T360] R13: dead000000000100 R14: ffff88811224d580 R15: ffff88811224d578 [ 29.375207][ T360] FS: 00007f5b794e5780(0000) GS:ffff88815d1e9000(0000) knlGS:0000000000000000 [ 29.375545][ T360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.375823][ T360]

Засегнати продукти

  • Linux Linux: cc71a757da78dd4aa1b4a9b19cb011833730ccf2 преди 3e515188393e62a718ccebee651ee74514104ff6; eda741fe155ddf5ecd2dd3bfbd4fc3c0c7dbb450 преди 20dd591d8f951e1e6aca5052be8785e6181055e2; 829c49b6b2ff45b043739168fd1245e4e1a91a30 преди 94a5f1efdefb01f82cd228bf4e7ef1e8fc075c80; 2f9761a94bae33d26e6a81b31b36e7d776d93dc1 преди acc08a0c7f37ebb1901144e03a7cba7d4afd9203; 4d55144b12e742404bb3f8fee6038bafbf45619d преди 7c09843fd2b44d9bf0de798683861d1aecd62a08; 342debc12183b51773b3345ba267e9263bdfaaef преди 0500af8630c3253f0dde879bd3a73a06bb2f2b3f; 342debc12183b51773b3345ba267e9263bdfaaef преди af54df2f44d9605614bc7ed96640302a240a9a62; 342debc12183b51773b3345ba267e9263bdfaaef преди 097f6fc7b1ae362dd7a9444b2572162fda73b284; 7a742a9506849d1c1aa71e36c89855ceddc7d58e; e73c838c80dccb9e4f19becc11d9f3cb4a27d483; a57fe60ef4cf96bfbb6b58397ec28bdb5a5c6b31; 5.10.241 преди 5.10.261; 5.15.190 преди 5.15.212; 6.1.135 преди 6.1.178; 6.6.88 преди 6.6.145; 6.12.24 преди 6.12.97; 5.4.297 преди 5.5; 6.13.12 преди 6.14; 6.14.3 преди 6.15
  • Linux Linux: 6.15; преди 6.15; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

История

  • 28 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80630: Linux | freedomonline.bg