2021-03-02 20:36:22 +00:00
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Fri, 22 Jan 2021 14:42:21 +1100
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Subject: [PATCH] disk/lvm: Do not allow a LV to be it's own segment's node's
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LV
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This prevents infinite recursion in the diskfilter verification code.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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---
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grub-core/disk/lvm.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
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2022-02-11 05:27:54 +00:00
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index 9eda28d85..7e86bb7df 100644
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2021-03-02 20:36:22 +00:00
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--- a/grub-core/disk/lvm.c
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+++ b/grub-core/disk/lvm.c
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@@ -840,9 +840,13 @@ error_parsing_metadata:
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}
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if (lv1->segments[i].nodes[j].pv == NULL)
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for (lv2 = vg->lvs; lv2; lv2 = lv2->next)
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- if (grub_strcmp (lv2->name,
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- lv1->segments[i].nodes[j].name) == 0)
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- lv1->segments[i].nodes[j].lv = lv2;
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+ {
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+ if (lv1 == lv2)
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+ continue;
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+ if (grub_strcmp (lv2->name,
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+ lv1->segments[i].nodes[j].name) == 0)
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+ lv1->segments[i].nodes[j].lv = lv2;
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+ }
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}
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}
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