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Strip sa_handler if ptrauth_calls is present #7

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Strip sa_handler if ptrauth_calls is present #7

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3 changes: 3 additions & 0 deletions src/signal/sigaction.c
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,9 @@ int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigact
}
}
ksa.handler = sa->sa_handler;
#if __has_feature(ptrauth_calls)
ksa.handler = __builtin_ptrauth_strip(ksa.handler, 0);
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@asl asl Mar 13, 2026

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Don't we want to authenticate the pointer value instead of merely striping here and in similar places? @kovdan01

#endif
ksa.flags = sa->sa_flags;
#ifdef SA_RESTORER
ksa.flags |= SA_RESTORER;
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