CVE-2026-89733

CVE CVE-2026-89733EUVD EUVD-2026-76645Published 2026-09-11T19:46:42.000ZLast changed 2026-09-14T12:02:21.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind() In uvc_function_bind() error path, we use usb_ep_free_request which uses uvc->control_req but does not set it to NULL afterwards. Thus, uvc->control_req is a dangling pointer causing a UAF. Also we do not set the uvc->control_buf pointer to NULL after freeing it, which is another dangling pointer. Fix it by setting uvc->control_req to NULL after we run usb_ep_free_request() and uvc->control_buf to NULL after kfree. Do the same for uvc_function_unbind().

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 3.4.25 <3.5; patch: 6.12.109; patch: 5.15.221; patch: 7.2.4; patch: 7.3-rc1; 0f9df939385527049c8062a099fbfa1479fe7ce0 <bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc; patch: 0; 3.8; 0f9df939385527049c8062a099fbfa1479fe7ce0 <ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2; patch: 6.18.50; e7a4b0efe62e56a0acc81d16091c6efc2a282be8; 0f9df939385527049c8062a099fbfa1479fe7ce0 <85dd5e8bd6776d02854f2847d83429f1f712e99c; 1efa8a5aac93d9e67075995d7d4902b57ce184f7; 0f9df939385527049c8062a099fbfa1479fe7ce0 <502a7f5b79b7ba751988789e982924f8f496129f; 3.7.2 <3.8; 0f9df939385527049c8062a099fbfa1479fe7ce0 <38f822ddce9355893d734279a26ddec45182197e; 0f9df939385527049c8062a099fbfa1479fe7ce0 <8e88ed8a374de67270d38689f2a81018909cafbb; 0f9df939385527049c8062a099fbfa1479fe7ce0 <bec7708eb3b5295d12e931db24381b7c94c72953; patch: 6.1.188; 3.2.36 <3.3; 0f9df939385527049c8062a099fbfa1479fe7ce0 <9897b7da8c0ad8356c1b8649379fcb5a689462cb; patch: 5.10.270; 065f5561a20659cf17aae5f72b32b5c2695c8e00; patch: 6.6.157

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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