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CVE-2026-72115: Linux

8.1

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 от съседна мрежа, без особени условия, без вход и без действие от потребителя.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: can: bcm: track a single source interface for ANYDEV timeout/throttle ops An ANYDEV rx op (ifindex == 0) with an active RX timeout and/or throttle timer has no defined semantics when matching frames arrive from several interfaces: bcm_rx_handler() can run concurrently for the same op on different CPUs, racing hrtimer_cancel()/ bcm_rx_starttimer() against bcm_rx_timeout_handler() and causing spurious RX_TIMEOUT notifications and last_frames corruption. The same concurrency lets throttled multiplex frames from different interfaces clobber the single rx_ifindex/rx_stamp fields shared by the op. Add op->if_detected to track the first interface that delivers a matching frame while a timeout/throttle timer is configured, and reject frames from any other interface for that op. The claim is decided in bcm_rx_handler() before hrtimer_cancel() touches op->timer, so a rejected frame can never disturb the claimed interface's watchdog. RTR-mode ops are excluded via RX_RTR_FRAME, independent of kt_ival1/kt_ival2, since those may briefly hold a stale value from an earlier non-RTR configuration. The claim is released in bcm_notify() on NETDEV_UNREGISTER and in bcm_rx_setup() when SETTIMER reconfigures the timer values. A (re-)claim is only possible on CAN devices in NETREG_REGISTERED dev->reg_state to cover the release in bcm_notify() where reg_state becomes NETREG_UNREGISTERING until synchronize_net().

Засегнати продукти

  • Linux Linux: ffd980f976e7fd666c2e61bf8ab35107efd11828 преди f147f48837cb1426521f5b3c3b3134c71128a25d; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 57cf104da4cf450ae9c16801a3164604b801d2cc; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 03dfe347c398fa41a7e30e8dc538f12568c183e6; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 18b45251e74e35668f0dd0c470549384ae191ecf; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 3ff8c24b421070a2db99a5cdb86edc9ff339418e; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди eca8b44d51fc6ab61022258ec968e55e3073b79e; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди b6317022b685a430a3ae420456716e3c0c02ef4b; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 2f5976f54a04e9f18b25283036ac3136be453b17
  • Linux Linux: 2.6.25; преди 2.6.25; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.5 до 7.1.*; 7.2 до *

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-72115: Linux | freedomonline.bg