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: udp_tunnel: prevent double queueing in udp_tunnel_nic_device_sync Yue Sun reported a use-after-free and debugobjects warning in udp_tunnel_nic_device_sync_work() during concurrent device operations. The workqueue core clears the internal pending bit before invoking the worker. At that point, a concurrent thread can queue the work again. When the already running worker eventually clears the work_pending flag to 0, it mistakenly clears the flag for the newly queued instance. udp_tunnel_nic_unregister() then observes work_pending as 0 and frees the structure while the second work item is still active in the queue, leading to UAF. Fix this by returning early in udp_tunnel_nic_device_sync() if work_pending is already set, preventing redundant work queueing.
Засегнати продукти
- Linux Linux: cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди d59d3b19e1cd1a01a6db59705327387a30aed153; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди f49ed02fd8c98da823fdd7b00d64a8cc1d1883ac; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди cee6688e5731c0591643521716d1a1a5c1a98bf8; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди 9075efb9b2c1d9d7a8285c937b64aa93ca0c41b7; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди 54292b167466cdf42176b7b6f01da66c184deb12; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 преди ecf69d4b43370c587e48d4d70289dbdb7e039d4d
- Linux Linux: 5.9; преди 5.9; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-72405
- https://nvd.nist.gov/vuln/detail/CVE-2026-72405
- https://git.kernel.org/stable/c/d59d3b19e1cd1a01a6db59705327387a30aed153
- https://git.kernel.org/stable/c/f49ed02fd8c98da823fdd7b00d64a8cc1d1883ac
- https://git.kernel.org/stable/c/cee6688e5731c0591643521716d1a1a5c1a98bf8
- https://git.kernel.org/stable/c/9075efb9b2c1d9d7a8285c937b64aa93ca0c41b7
- https://git.kernel.org/stable/c/54292b167466cdf42176b7b6f01da66c184deb12
- https://git.kernel.org/stable/c/ecf69d4b43370c587e48d4d70289dbdb7e039d4d