CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
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: cap advertised IP tunnel headroom IP tunnel devices derive their advertised needed_headroom from lower output devices. A stack of user-created devices can make the derived value larger than the 16-bit skb header offsets can represent. Once IP output reserves it, skb head expansion can wrap those offsets. The runtime transmit path already caps a growing needed_headroom at 512. Apply the same cap when tunnel configuration publishes needed_headroom derived from a lower output device. Capping the advertised value is safe: IP tunnel transmit still expands the skb when a packet needs more headroom. A nonsensical stacked configuration can therefore incur an extra reallocation, but it cannot publish an unbounded reservation to upper layers.
Засегнати продукти
- Linux Linux: 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди fb889a619723032140f5d983a3a34d25a5a2bed4; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди b160422f8103574425e2834130e169d84c94fa1d; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди d36e75f5669140b66515ad3a176ca6337bd80a5e; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди 84783961cb8bdb36b4f41a02ce43aafc6d52b176; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди bc4e05ae66c9797a0972ac44326e69c5305e0020; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди af0ee8f04bea22cdb331fa3509e17f81b48938ad; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди 9144f2c53a04465a6878172b523f640313c5559e; 1a37e412a0225fcba5587f24c0dfc7636efc8b69 преди 6b222adeb9340306e2ff97127c76117abb9b3df8
- Linux Linux: 3.11; преди 3.11; 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.*; 7.3 до *
История
- 11 септември 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-80978
- https://nvd.nist.gov/vuln/detail/CVE-2026-80978
- https://git.kernel.org/stable/c/fb889a619723032140f5d983a3a34d25a5a2bed4
- https://git.kernel.org/stable/c/b160422f8103574425e2834130e169d84c94fa1d
- https://git.kernel.org/stable/c/d36e75f5669140b66515ad3a176ca6337bd80a5e
- https://git.kernel.org/stable/c/84783961cb8bdb36b4f41a02ce43aafc6d52b176
- https://git.kernel.org/stable/c/bc4e05ae66c9797a0972ac44326e69c5305e0020
- https://git.kernel.org/stable/c/af0ee8f04bea22cdb331fa3509e17f81b48938ad
- https://git.kernel.org/stable/c/9144f2c53a04465a6878172b523f640313c5559e
- https://git.kernel.org/stable/c/6b222adeb9340306e2ff97127c76117abb9b3df8