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From: Frank Busse <f.busse@imperial.ac.uk>
To: 64229@debbugs.gnu.org
Subject: bug#64229: b2sum: heap-overflow in digest_check
Date: Thu, 22 Jun 2023 17:33:40 +0100	[thread overview]
Message-ID: <20230622173340.0906eb6c@gyali> (raw)

Hi,


KLEE reported a heap-overflow in b2sum (Coreutils 9.3). When running it
with:

$ printf '\n\n0A0BA0' | coreutils-9.3/bin/b2sum -c

(even '0BA0' seems to work on my machine) ASAN confirms the issue:

> #1  0x0000000000473de0 in __interceptor_strchr (s=<optimized out>, c=<optimized out>)
> #2  0x0000000000500a81 in digest_check (checkfile_name=0x7fffffffe69e "stdin") at /tmp/src/coreutils-9.3/src/digest.c:1216
> #3  0x00000000005005e9 in main (argc=3, argv=0x7fffffffe3a8) at /tmp/src/coreutils-9.3/src/digest.c:1607


Best,

Frank




             reply	other threads:[~2023-06-22 16:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-22 16:33 Frank Busse [this message]
2023-06-22 20:48 ` bug#64229: b2sum: heap-overflow in digest_check Pádraig Brady

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