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CVE-2026-72116: Linux

7.1

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 локално, без особени условия, с обикновен потребителски 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: fix stale rx/tx ops after device removal RX: an RX_SETUP update(!) for an existing op skipped can_rx_register() unconditionally, even when a concurrent NETDEV_UNREGISTER had already torn down its registration (op->rx_reg_dev == NULL). This silently did not re-enable frame delivery for that updated filter. bcm_rx_setup() now re-registers in that case, while leaving rx_ops with ifindex = 0 (all CAN devices) which never carry a tracked rx_reg_dev registered as-is. TX: bcm_notify() only handled bo->rx_ops on NETDEV_UNREGISTER, leaving tx_ops with an active cyclic transmission re-arming its hrtimer indefinitely to execute bcm_tx_timeout_handler(). Cancelling the hrtimer prevents the runaway timer and any injection into a later reused ifindex, since nothing else calls bcm_can_tx() for the op until an explicit TX_SETUP update re-arms it. Unlike bcm_rx_unreg(), which clears the tracked rx_reg_dev for rx_ops, the ifindex is intentionally left unchanged for tx_ops. bcm_tx_setup() always rejects ifindex 0, so clearing it would strand the op: neither a later TX_SETUP (bcm_find_op()) nor TX_DELETE (bcm_delete_tx_op()) could ever find it again, since both require an exact ifindex match.

Засегнати продукти

  • Linux Linux: ffd980f976e7fd666c2e61bf8ab35107efd11828 преди d30a36066ed3abefb72ae18901f71841ba18b350; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди ca829677ffa2de5d79e06366e19ac1e4f5cc78dd; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 9517d8fb0b191398d35b9b7f8c719c1cc7761cb1; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 60d8a7942f4ed2d975207aaeba1adb576707e53d; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди f749e4564952d60e96930c09f2be99955d07c22e; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 6be3e1fedf03eab36a2c09d755d1171287b2014b; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди b31d0933509c5a35c0be5736a2ce8df0d1bf112c; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 3b762c0d950383ab7a002686c9136b9aa55d2d70
  • 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-2026-72116: Linux | freedomonline.bg