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54013: add a range check on signal numbers passed to trap

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This commit is contained in:
Oliver Kiddle
2025-10-31 10:54:49 +01:00
parent ebd51de38c
commit a3547fd4c1
3 changed files with 16 additions and 1 deletions
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8
Src/builtin.c
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@@ -7428,6 +7428,14 @@ bin_trap(char *name, char **argv, UNUSED(Options ops), UNUSED(int func))
return 1;
}
if (!*argv) {
if (idigit(*arg) || !strncmp(arg, "SIG", 3))
zwarnnam(name, "undefined signal: %s", arg);
else
zwarnnam(name, "signal expected");
return 1;
}
/* set traps */
for (; *argv; argv++) {
Eprog t;

6
Src/jobs.c
View File

@@ -3054,7 +3054,11 @@ getsigidx(const char *s)
/* check for a signal specified by number */
x = atoi(s);
if (idigit(*s) && x >= 0)
if (idigit(*s) && x >= 0 && (x < VSIGCOUNT
#if defined(SIGRTMIN) && defined(SIGRTMAX)
|| (x >= SIGRTMIN && x <= SIGRTMAX)
#endif
))
return SIGIDX(x);
/* search for signal by name */