[Bug 15655] New: [busybox 1.36.1] segmentation fault in awk

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=15655

            Bug ID: 15655
           Summary: [busybox 1.36.1] segmentation fault in awk
           Product: Busybox
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at busybox.net
          Reporter: f.busse at imperial.ac.uk
                CC: busybox-cvs at busybox.net
  Target Milestone: ---

The following parameter

$ busybox-1.36.1/bin/busybox" "awk" "-f/"

leads to a segfault in awk, skip_spaces gets a NULL pointer:

#0  0x00005555557c8d6f in skip_spaces (p=p at entry=0x0) at editors/awk.c:826
#1  0x00005555557cc649 in next_token (expected=expected at entry=2146997285) at
editors/awk.c:1132
#2  0x00005555557d4a39 in parse_program (p=p at entry=0x0) at editors/awk.c:1720
#3  0x00005555557dc848 in awk_main (argc=<optimized out>, argv=<optimized out>)
at editors/awk.c:3660
#4  0x0000555555725260 in run_applet_no_and_exit (applet_no=applet_no at entry=2,
name=name at entry=0x7fffffffe699 "awk", argv=argv at entry=0x7fffffffe3b0) at
libbb/appletlib.c:969
#5  0x000055555572577d in run_applet_and_exit (name=name at entry=0x7fffffffe699
"awk", argv=argv at entry=0x7fffffffe3b0) at libbb/appletlib.c:988
#6  0x0000555555725752 in busybox_main (argv=0x7fffffffe3b0) at
libbb/appletlib.c:916
#7  run_applet_and_exit (name=name at entry=0x7fffffffe691 "busybox",
argv=argv at entry=0x7fffffffe3a8) at libbb/appletlib.c:981
#8  0x000055555572589b in main (argc=<optimized out>, argv=0x7fffffffe3a8) at
libbb/appletlib.c:1128

(found by KLEE)

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