CVE-2026-72405
CVE CVE-2026-72405EUVD EUVD-2026-59304Published 2026-08-15T05:56:29.000ZLast changed 2026-08-17T05:43:45.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.40; patch: 7.2; 5.9; patch: 0; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 <cee6688e5731c0591643521716d1a1a5c1a98bf8; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 <54292b167466cdf42176b7b6f01da66c184deb12; patch: 6.12.97; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 <ecf69d4b43370c587e48d4d70289dbdb7e039d4d; cc4e3835eff474aa274d6e1d18f69d9d296d3b76 <9075efb9b2c1d9d7a8285c937b64aa93ca0c41b7; patch: 7.1.5
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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