Vulnerability Details : CVE-2022-49686
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
Products affected by CVE-2022-49686
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Exploit prediction scoring system (EPSS) score for CVE-2022-49686
0.03%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
References for CVE-2022-49686
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