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CVE-2026-90071: 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: net/sched: sch_teql: restore skb->dev on the slave failure path teql_master_xmit() sets skb->dev = slave before calling the slave's ndo_start_xmit(), but never restores it when that transmit fails. The skb then walks on to the next slave still pointing at the previous one. If a later slave has no resolved neighbour, teql_resolve() hands the skb to neigh_event_send(), which queues it on that neighbour's arp_queue with the stale skb->dev. skb->dev holds no reference, so deleting the previous slave frees the net_device while the skb is still queued. Whatever runs next on that skb - arp_error_report() on timeout, or neigh_direct_output() -> dev_queue_xmit() once the neighbour resolves - causes a UAF like the one below: BUG: KASAN: slab-use-after-free in __icmp_send (net/ipv4/icmp.c:914 (discriminator 2)) Read of size 4 at addr ffff888106e100b0 by task flood_packet/527 CPU: 0 UID: 0 PID: 527 Comm: flood_packet Not tainted 7.2.0-rc6-g594d90519502 #1 PREEMPT(lazy) Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Call Trace: <IRQ> dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) print_report (mm/kasan/report.c:378 mm/kasan/report.c:482) ? __pfx__raw_spin_lock_irqsave (./include/asm-generic/qrwlock.h:122 (discriminator 4)) ? __icmp_send (net/ipv4/icmp.c:914 (discriminator 2)) kasan_report (mm/kasan/report.c:595) ? __icmp_send (net/ipv4/icmp.c:914 (discriminator 2)) __icmp_send (net/ipv4/icmp.c:914 (discriminator 2)) [...] ipv4_link_failure (net/ipv4/route.c:1251 net/ipv4/route.c:1258) ? __pfx_ipv4_link_failure (./include/linux/skbuff.h:4327) ? _raw_write_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qrwlock.h:98 ./include/linux/rwlock_api_smp.h:230 kernel/locking/spinlock.c:304) ? __pfx__raw_write_lock (kernel/locking/spinlock.c:175) arp_error_report (./include/net

    Засегнати продукти

    • Linux Linux: 383493b9940e3d1b5517424081b3e072e20ec43c преди 1360bc93f5be1be3cf937ebea667b3418dd30a79; 6b1f563d670162e188a0f2aec39c24b67b106e17 преди d453bf439ef230b5743afc25e194adacca8c6e43; 57c153249143333bbf4ecf927bdf8aa2696ee397 преди 012559cf3c67ce8825a31d4f66b040b6fbaf775e; 59b06d8b9bdb6b64b3c534c18da68bce5ccd31be преди aa39a790d56b40bfcf3861653ceb46a3a113adb6; 81a43e8005366f16e629d8c95dfe05beaa8d36a7 преди 00d8a387b23b7831ad9919256a6b9caaa10f19c3; 0bad9c86edd22dec4df83c2b29872d66fd8a2ff4 преди 96bc345a3f17543d0d92ada609e02198d6380e26; 0cc0c2e661af418bbf7074179ea5cfffc0a5c466 преди 0cd75037948567193f7f5767176538822ce23873; 0cc0c2e661af418bbf7074179ea5cfffc0a5c466 преди dc4b95b8fee95113587e93ca116356032d271371; 21ea283c2750c8307aa35ee832b0951cc993c27d; 5.10.253 преди 5.10.270; 5.15.203 преди 5.15.221; 6.1.167 преди 6.1.188; 6.6.130 преди 6.6.157; 6.12.78 преди 6.12.110; 6.18.19 преди 6.18.52; 6.19.9 преди 6.20
    • Linux Linux: 7.0; преди 7.0; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.52 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък

    История

    • 17 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-90071: Linux | freedomonline.bg