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CVE-2026-80977: 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: net: skbuff: don't touch shared zerocopy state in skb_tx_error() skb_tx_error() completes the zerocopy uarg and clears SKBFL_ALL_ZEROCOPY, and skb_zcopy_downgrade_managed() clears SKBFL_MANAGED_FRAG_REFS. Both live in skb_shinfo(), which every clone shares, while the caller only owns the reference it is about to drop. Through a clone it tells the producer its pages are free and drops SKBFL_SHARED_FRAG for an skb that is still in flight. Open vSwitch reaches this with a non-last OVS_ACTION_ATTR_RECIRC: clone_execute() sends a skb_clone() into ovs_dp_process_packet() while do_execute_actions() keeps forwarding the original, and skb_clone() does not privatise the frags here -- skb_orphan_frags() returns early on SKBFL_DONT_ORPHAN. A flow miss on the clone then strips the marker from the packet still being forwarded, and a later local ESP delivery decrypts in place over frags it does not own privately. Skip it for a cloned skb. Nothing is lost: skb_release_data() clears the zerocopy state once the last reference to the shared data goes.

Засегнати продукти

  • Linux Linux: 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 6493165034bca14033bf49c9cec7b45e97a91497; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди b4452349dcf4d561e13be768d5d278de58248930; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 363c4252ffc473a0203e91b83ede5519dfb8bd07; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 6ec22afc82a3cae07ade0a6ec361ae2532128ff5; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 15aa81b390d401abf4b8211042470e9e92e3b7fb; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 288f9970670841044ab030104fa6b6ed159949d0; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди 0370da114a9bc044e248b85c6809d1b5e0c1f7f9; 25121173f7b1e4ac3fc692df6e7b8c52ec36abba преди f66bdb1cc0fcd227a062378f8be0b5873aa5600a
  • Linux Linux: 3.8; преди 3.8; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

  • 11 септември 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-80977: Linux | freedomonline.bg