CVE-2026-89733High· 7.8▾ TwilightIn 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->…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 4.6
none → medium
— → 7.8
none → high
7.8 → 4.6
high → medium
4.6 → 7.8
medium → high
7.8 → 5.5
high → medium
Last analysed / modified upstream
5.5 → 7.8
medium → high
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().
Linux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2Linux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < 85dd5e8bd6776d02854f2847d83429f1f712e99cLinux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < 502a7f5b79b7ba751988789e982924f8f496129fLinux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < bec7708eb3b5295d12e931db24381b7c94c72953Linux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < 8e88ed8a374de67270d38689f2a81018909cafbbLinux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < 9897b7da8c0ad8356c1b8649379fcb5a689462cbLinux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < 38f822ddce9355893d734279a26ddec45182197eLinux >= 0f9df939385527049c8062a099fbfa1479fe7ce0 < bdab5605259ba5d6ff927c1a85cc83eb3ecfdaccLinux 1efa8a5aac93d9e67075995d7d4902b57ce184f7Linux e7a4b0efe62e56a0acc81d16091c6efc2a282be8Linux 065f5561a20659cf17aae5f72b32b5c2695c8e00Linux >= 3.2.36 < 3.3Linux >= 3.4.25 < 3.5Linux >= 3.7.2 < 3.8Linux 3.8Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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