[openssh-commits] [openssh] 01/03: upstream: avoid use-after-free in update_krl_from_file() found with

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commit b1c4bf5c2f1c2b30698dbaadc5d823862213f1fc
Author: jsg at openbsd.org <jsg at openbsd.org>
AuthorDate: Thu Sep 25 12:52:21 2025 +0000

    upstream: avoid use-after-free in update_krl_from_file() found with
    
    clang scan-build, ok dtucker@
    
    OpenBSD-Commit-ID: 8ec86eca573740c94d5bc7e252959174555f4eb8
---
 ssh-keygen.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ssh-keygen.c b/ssh-keygen.c
index 110d07fc1..d450f3e41 100644
--- a/ssh-keygen.c
+++ b/ssh-keygen.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keygen.c,v 1.483 2025/09/25 07:04:38 djm Exp $ */
+/* $OpenBSD: ssh-keygen.c,v 1.484 2025/09/25 12:52:21 jsg Exp $ */
 /*
  * Author: Tatu Ylonen <ylo at cs.hut.fi>
  * Copyright (c) 1994 Tatu Ylonen <ylo at cs.hut.fi>, Espoo, Finland
@@ -2321,6 +2321,8 @@ update_krl_from_file(struct passwd *pw, const char *file, int wild_ca,
 			    blob, blen)) != 0)
 				fatal_fr(r, "revoke key failed");
 			free(blob);
+			blob = NULL;
+			blen = 0;
 		} else {
 			if (strncasecmp(cp, "key:", 4) == 0) {
 				cp += 4;

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