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os: handle memory allocation failure in set_font_authorizations()

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Reported in #1817:
xwayland-24.1.6/redhat-linux-build/../os/utils.c:1108:9:
 warning[-Wanalyzer-possible-null-dereference]:
  dereference of possibly-NULL ‘result’
xwayland-24.1.6/redhat-linux-build/../os/utils.c:1108:9:
 danger: ‘malloc((long unsigned int)len + 18)’ could be NULL:
  unchecked value from (3)

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
This commit is contained in:
Alan Coopersmith 2026-03-29 16:00:55 -07:00
parent 16ca2c7a11
commit fde685eefe
1 changed files with 8 additions and 0 deletions
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8
os/utils.c
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@ -1115,6 +1115,14 @@ set_font_authorizations(char **authorizations, int *authlen, void *client)
len = strlen(hnameptr) + 1;
result = malloc(len + sizeof(AUTHORIZATION_NAME) + 4);
if (result == NULL) {
#if defined(HAVE_GETADDRINFO)
if (ai) {
freeaddrinfo(ai);
}
#endif
return 0;
}
p = result;
*p++ = sizeof(AUTHORIZATION_NAME) >> 8;