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CVE-2022-49686
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CVE-2022-49686
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: uvc: fix list double add in uvcg_video_pump
A panic can occur if the endpoint becomes disabled and the
uvcg_video_pump adds the request back to the req_free list after it has
already been queued to the endpoint. The endpoint complete will add the
request back to the req_free list. Invalidate the local request handle
once it’s been queued.
<6>
[ 246.796704][T13726] configfs-gadget gadget: uvc: uvc_function_set_alt(1, 0)
<3>
[ 246.797078][ T26] list_add double add: new=ffffff878bee5c40, prev=ffffff878bee5c40, next=ffffff878b0f0a90.
<6>
[ 246.797213][ T26] ——————[ cut here ]——————
<2>
[ 246.797224][ T26] kernel BUG at lib/list_debug.c:31!
<6>
[ 246.807073][ T26] Call trace:
<6>
[ 246.807180][ T26] uvcg_video_pump+0x364/0x38c
<6>
[ 246.807366][ T26] process_one_work+0x2a4/0x544
<6>
[ 246.807394][ T26] worker_thread+0x350/0x784
<6>
[ 246.807442][ T26] kthread+0x2ac/0x320
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CVE ID
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