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CVE-2026-72113: 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.

  • 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: add missing device refcount for CAN filter removal sashiko-bot remarked a problem with a concurrent device unregistration in isotp.c which also is present in the bcm.c code. A former fix for raw.c commit c275a176e4b6 ("can: raw: add missing refcount for memory leak fix") introduced a netdevice_tracker which solves the issue for bcm.c too. bcm_release(), bcm_delete_rx_op() and bcm_notifier() relied on dev_get_by_index(ifindex) to re-find the device for an rx_op before unregistering its filter. If a concurrent NETDEV_UNREGISTER has already unlisted the device from the ifindex table, that lookup fails and can_rx_unregister() is silently skipped, leaving a stale CAN filter pointing at the soon-to-be-freed bcm_op/socket. Hold a netdev_hold()/netdev_put() tracked reference on op->rx_reg_dev from the moment the rx filter is registered in bcm_rx_setup() until it is unregistered in bcm_rx_unreg(), and use that reference directly in bcm_release() and bcm_delete_rx_op() instead of re-looking the device up by ifindex.

Засегнати продукти

  • Linux Linux: ffd980f976e7fd666c2e61bf8ab35107efd11828 преди bd5232663524e94cc5aad861dca11e3db8e2ab6f; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди ee8b36d0faca08f35b889b6e9aa850695e5b8ba9; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди dcaee869913c7210cd47ed0a8f27349d7bdcdb7b; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 84aa4807816e405c1bf87114fc63e06d244281ef; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 633bda66fbf309f5de5e1ad6defe8e6b1d77a20f; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди b024c21c9066f6957b7d4a8f2037e4b000c5e041; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 04d23061bbf18d5d81022eb21e9d32e99d24468d; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди d59948293ea34b6337ce2b5febab8510de70048c
  • 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-2026-72113: Linux | freedomonline.bg