Answer in brief
CVE-2026-89733 records a High severity (CVSS 7.8) vulnerability in usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=0f9df939385527049c8062a099fbfa1479fe7ce0 <8e88ed8a374de67270d38689f2a81018909cafbb || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <9897b7da8c0ad8356c1b8649379fcb5a689462cb || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <38f822ddce9355893d734279a26ddec45182197e || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc || 1efa8a5aac93d9e67075995d7d4902b57ce184f7 || e7a4b0efe62e56a0acc81d16091c6efc2a282be8 || 065f5561a20659cf17aae5f72b32b5c2695c8e00 || >=3.2.36 <3.3 || >=3.4.25 <3.5 || >=3.7.2 <3.8 | 8e88ed8a374de67270d38689f2a81018909cafbb, 9897b7da8c0ad8356c1b8649379fcb5a689462cb, 38f822ddce9355893d734279a26ddec45182197e, bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc, 3.3, 3.5, 3.8 |
| Linux/Linuxgeneric | 3.8 | Not reported |
| Linux/Linuxgeneric | >=0f9df939385527049c8062a099fbfa1479fe7ce0 <ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2 || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <85dd5e8bd6776d02854f2847d83429f1f712e99c || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <502a7f5b79b7ba751988789e982924f8f496129f || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <bec7708eb3b5295d12e931db24381b7c94c72953 || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <8e88ed8a374de67270d38689f2a81018909cafbb || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <9897b7da8c0ad8356c1b8649379fcb5a689462cb || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <38f822ddce9355893d734279a26ddec45182197e || >=0f9df939385527049c8062a099fbfa1479fe7ce0 <bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc || 1efa8a5aac93d9e67075995d7d4902b57ce184f7 || e7a4b0efe62e56a0acc81d16091c6efc2a282be8 || 065f5561a20659cf17aae5f72b32b5c2695c8e00 || >=3.2.36 <3.3 || >=3.4.25 <3.5 || >=3.7.2 <3.8 | ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2, 85dd5e8bd6776d02854f2847d83429f1f712e99c, 502a7f5b79b7ba751988789e982924f8f496129f, bec7708eb3b5295d12e931db24381b7c94c72953, 8e88ed8a374de67270d38689f2a81018909cafbb, 9897b7da8c0ad8356c1b8649379fcb5a689462cb, 38f822ddce9355893d734279a26ddec45182197e, bdab5605259ba5d6ff927c1a85cc83eb3ecfdacc, 3.3, 3.5, 3.8 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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().
Quoted source text, attributed separately from HOL analysis.