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Joe Simmons-Talbott
6be50f680a
The agilent_82357a driver uses the USB device serial string for device
matching but does not verify that the string exists before passing it
to strcmp().
Verify that the device has a serial number before accessing it to avoid
triggering a NULL-pointer dereference with devices that don't provide
a serial number (iSerialNumber = 0).
Similar to commit aa79f996eb ("i2c: cp2615: fix serial string
NULL-deref at probe").
Found by Claude:sonnet-4.5
Signed-off-by: Joe Simmons-Talbott <[email protected]>
Acked-by: Dave Penkler <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>