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lib: fix address sanitizer crash on find

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Fix the following address sanitizer crash when running the command `find`:

  ERROR: AddressSanitizer: dynamic-stack-buffer-overflow
  WRITE of size 1 at 0x7fff4840fc1d thread T0
      0  in print_cmd ../lib/command.c:1541
      1  in cmd_find_cmds ../lib/command.c:2364
      2  in find ../vtysh/vtysh.c:3732
      3  in cmd_execute_command_real ../lib/command.c:995
      4  in cmd_execute_command ../lib/command.c:1055
      5  in cmd_execute ../lib/command.c:1219
      6  in vtysh_execute_func ../vtysh/vtysh.c:486
      7  in vtysh_execute ../vtysh/vtysh.c:671
      8  in main ../vtysh/vtysh_main.c:721
      9  in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
      10 in _start (/usr/bin/vtysh+0x21f64d)

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2021-06-07 11:02:16 -03:00
parent 455d14ae31
commit 77af3a34ba
1 changed files with 1 additions and 1 deletions
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2
lib/command.c
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@ -1496,7 +1496,7 @@ static void permute(struct graph_node *start, struct vty *vty)
static void print_cmd(struct vty *vty, const char *cmd)
{
int i, j, len = strlen(cmd);
char buf[len];
char buf[len + 1];
bool skip = false;
j = 0;