b9f070c2f2
Resolves: CVE-2024-45781 CVE-2024-45783 CVE-2024-45778 Resolves: CVE-2024-45775 CVE-2024-45780 CVE-2024-45774 Resolves: CVE-2025-0690 CVE-2025-1118 CVE-2024-45782 Resolves: CVE-2025-0624 CVE-2024-45779 CVE-2024-45776 Resolves: CVE-2025-0622 CVE-2025-0677 Resolves: #RHEL-80691 Resolves: #RHEL-80690 Resolves: #RHEL-80689 Resolves: #RHEL-80687 Resolves: #RHEL-80686 Signed-off-by: Leo Sandoval <lsandova@redhat.com> Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
32 lines
1003 B
Diff
32 lines
1003 B
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: B Horn <b@horn.uk>
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Date: Fri, 1 Nov 2024 19:24:29 +0000
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Subject: [PATCH] commands/pgp: Unregister the "check_signatures" hooks on
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module unload
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If the hooks are not removed they can be called after the module has
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been unloaded leading to an use-after-free.
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Fixes: CVE-2025-0622
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Reported-by: B Horn <b@horn.uk>
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Signed-off-by: B Horn <b@horn.uk>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/commands/pgp.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/grub-core/commands/pgp.c b/grub-core/commands/pgp.c
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index 847a5046a..fa3ef5c75 100644
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--- a/grub-core/commands/pgp.c
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+++ b/grub-core/commands/pgp.c
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@@ -982,6 +982,8 @@ GRUB_MOD_INIT(pgp)
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GRUB_MOD_FINI(pgp)
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{
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+ grub_register_variable_hook ("check_signatures", NULL, NULL);
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+ grub_env_unset ("check_signatures");
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grub_verifier_unregister (&grub_pubkey_verifier);
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grub_unregister_extcmd (cmd);
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grub_unregister_extcmd (cmd_trust);
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