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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-89733

usb: gadget: uvc: fix dangling pointers in uvc_function_bind() and uvc_function_unbind()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < ddb1b0d5d858584ed0d3a5aaa042ee693998c7e2affected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < 85dd5e8bd6776d02854f2847d83429f1f712e99caffected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < 502a7f5b79b7ba751988789e982924f8f496129faffected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < bec7708eb3b5295d12e931db24381b7c94c72953affected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < 8e88ed8a374de67270d38689f2a81018909cafbbaffected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < 9897b7da8c0ad8356c1b8649379fcb5a689462cbaffected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < 38f822ddce9355893d734279a26ddec45182197eaffected
  • 0f9df939385527049c8062a099fbfa1479fe7ce0 to < bdab5605259ba5d6ff927c1a85cc83eb3ecfdaccaffected
  • 1efa8a5aac93d9e67075995d7d4902b57ce184f7affected
  • e7a4b0efe62e56a0acc81d16091c6efc2a282be8affected
  • 065f5561a20659cf17aae5f72b32b5c2695c8e00affected
  • 3.2.36 to < 3.3affected
  • 3.4.25 to < 3.5affected
  • 3.7.2 to < 3.8affected

Linux Linux

Default version status: affected

  • 3.8affected
  • 0 to < 3.8unaffected
  • 5.10.270 to ≤ 5.10.*unaffected
  • 5.15.221 to ≤ 5.15.*unaffected
  • 6.1.188 to ≤ 6.1.*unaffected
  • 6.6.157 to ≤ 6.6.*unaffected
  • 6.12.109 to ≤ 6.12.*unaffected
  • 6.18.50 to ≤ 6.18.*unaffected
  • 7.2.4 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References