2023-04-10 22:22:30 +08:00
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From 29d44a236a5e939b8ff24e6c31141d5b1e48f693 Mon Sep 17 00:00:00 2001
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From: Darren Kenny <darren.kenny@oracle.com>
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Date: Tue, 26 Oct 2021 15:02:40 +0000
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Subject: io/gzio: Fix possible use of uninitialized variable in huft_build()
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In huft_build() it is possible to reach the for loop where "r" is being
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assigned to "q[j]" without "r.v" ever being initialized.
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Fixes: CID 314024
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Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
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Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Conflict: NA
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Reference: https://git.savannah.gnu.org/cgit/grub.git/commit?id=29d44a236a5e939b8ff24e6c31141d5b1e48f693
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---
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grub-core/io/gzio.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/grub-core/io/gzio.c b/grub-core/io/gzio.c
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index aea86a0..10156e5 100644
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--- a/grub-core/io/gzio.c
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+++ b/grub-core/io/gzio.c
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@@ -447,7 +447,7 @@ huft_build (unsigned *b, /* code lengths in bits (all assumed <= BMAX) */
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int l; /* bits per table (returned in m) */
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register unsigned *p; /* pointer into c[], b[], or v[] */
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register struct huft *q; /* points to current table */
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- struct huft r; /* table entry for structure assignment */
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+ struct huft r = {0}; /* table entry for structure assignment */
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struct huft *u[BMAX]; /* table stack */
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unsigned v[N_MAX]; /* values in order of bit length */
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register int w; /* bits before this table == (l * h) */
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--
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cgit v1.1
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