Mailing List Archive

Crash on no input specified
While doing some testing on Fedora 30, I came across an interesting
defect: I can concoct a list of recipients which, if used without a file
specified on the command line, results in both output written to the
screen and a hard crash. GnuPG 2.2.16 using libgcrypt 1.8.4.


[rjh@localhost ~]$ gpg --armor --encrypt --sign --trust-model always -r
0x43F54688E0C5670C -r 0xE045FE37AD62C09F -r 0xB1B51B00227E6279 -r
0x5A11CC0668C218E6 -r 0x5CE84B8A08DA0BBA -r 0xA52C55A2525A9864 -r
0xB6ABE088B62E904D -r 0x2925BBE582874330 -r 0xEECF453F78E1E99B
gpg: pubkey_encrypt failed: Provided object is too short

[much output snipped]

KtNV31DFkcpeBy1iGfqKfu3acoTYufpjteR73Ogpg: pubkey_encrypt failed:
Provided object is too short
gpg: Ohhhh jeeee: Assertion "a->filter == block_filter" in
iobuf_set_partial_body_length_mode failed (iobuf.c:2528)
Aborted (core dumped)


Running this within gdb gives:


Program received signal SIGABRT, Aborted.
__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
50 return ret;
(gdb) backtrace
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007ffff7b13895 in __GI_abort () at abort.c:79
#2 0x00005555555fe370 in do_logv (level=6,
ignore_arg_ptr=ignore_arg_ptr@entry=0, extrastring=<optimized out>,
extrastring@entry=0x0, prefmt=prefmt@entry=0x0, fmt=<optimized out>,
fmt@entry=0x555555636288 "Assertion \"%s\" in %s failed (%s:%d)\n",
arg_ptr=arg_ptr@entry=0x7fffffffbc60) at logging.c:859
#3 0x00005555555fedd1 in log_log (level=level@entry=6,
fmt=fmt@entry=0x555555636288 "Assertion \"%s\" in %s failed (%s:%d)\n")
at logging.c:872
#4 0x00005555555ff5a6 in _log_assert (
expr=expr@entry=0x55555563891e "a->filter == block_filter",
file=file@entry=0x5555556385e2 "iobuf.c", line=line@entry=2528,
func=func@entry=0x5555556389a0 <__FUNCTION__.10483>
"iobuf_set_partial_body_length_mode") at logging.c:1091
#5 0x000055555560be32 in iobuf_set_partial_body_length_mode (
a=a@entry=0x555555676820, len=len@entry=0) at iobuf.c:2539
#6 0x000055555557bcb3 in do_plaintext (pt=<optimized out>,
ctb=<optimized out>, out=<optimized out>) at build-packet.c:758
#7 build_packet (out=out@entry=0x555555676820,
at build-packet.c:153
#8 0x00005555555b49a6 in write_plaintext_packet (out=0x555555676820,
inp=inp@entry=0x5555556769b0, fname=fname@entry=0x0, ptmode=98)
at sign.c:678
#9 0x00005555555b653c in sign_file (ctrl=0x555555665090, filenames=0x0,
detached=<optimized out>, locusr=<optimized out>, encryptflag=1,
remusr=<optimized out>, outfile=0x0) at sign.c:1066
#10 0x000055555556a668 in main (argc=<optimized out>, argv=<optimized out>)
at gpg.c:4240