6eaa34fe07
- Resolves: CVE-2024-45779 CVE-2024-45778 CVE-2025-1118 - Resolves: CVE-2025-0677 CVE-2024-45782 CVE-2025-0690 - Resolves: CVE-2024-45783 CVE-2025-0624 CVE-2024-45776 - Resolves: CVE-2025-0622 CVE-2024-45774 CVE-2024-45775 - Resolves: CVE-2024-45781 CVE-2024-45780 - Resolves: #RHEL-79700 - Resolves: #RHEL-79341 - Resolves: #RHEL-79875 - Resolves: #RHEL-79849 - Resolves: #RHEL-79707 - Resolves: #RHEL-79857 - Resolves: #RHEL-79709 - Resolves: #RHEL-79846 - Resolves: #RHEL-75737 - Resolves: #RHEL-79713 - Resolves: #RHEL-73785 - Resolves: #RHEL-73787 - Resolves: #RHEL-79704 - Resolves: #RHEL-79702 Signed-off-by: Nicolas Frayer <nfrayer@redhat.com>
51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Michael Chang <mchang@suse.com>
|
|
Date: Fri, 31 May 2024 15:14:42 +0800
|
|
Subject: [PATCH] fs/iso9660: Fix invalid free
|
|
|
|
The ctx->filename can point to either a string literal or a dynamically
|
|
allocated string. The ctx->filename_alloc field is used to indicate the
|
|
type of allocation.
|
|
|
|
An issue has been identified where ctx->filename is reassigned to
|
|
a string literal in susp_iterate_dir() but ctx->filename_alloc is not
|
|
correctly handled. This oversight causes a memory leak and an invalid
|
|
free operation later.
|
|
|
|
The fix involves checking ctx->filename_alloc, freeing the allocated
|
|
string if necessary and clearing ctx->filename_alloc for string literals.
|
|
|
|
Reported-by: Daniel Axtens <dja@axtens.net>
|
|
Signed-off-by: Michael Chang <mchang@suse.com>
|
|
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
|
|
---
|
|
grub-core/fs/iso9660.c | 14 ++++++++++++--
|
|
1 file changed, 12 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/grub-core/fs/iso9660.c b/grub-core/fs/iso9660.c
|
|
index 82cf1a271..7a59a65a5 100644
|
|
--- a/grub-core/fs/iso9660.c
|
|
+++ b/grub-core/fs/iso9660.c
|
|
@@ -568,9 +568,19 @@ susp_iterate_dir (struct grub_iso9660_susp_entry *entry,
|
|
filename type is stored. */
|
|
/* FIXME: Fix this slightly improper cast. */
|
|
if (entry->data[0] & GRUB_ISO9660_RR_DOT)
|
|
- ctx->filename = (char *) ".";
|
|
+ {
|
|
+ if (ctx->filename_alloc)
|
|
+ grub_free (ctx->filename);
|
|
+ ctx->filename_alloc = 0;
|
|
+ ctx->filename = (char *) ".";
|
|
+ }
|
|
else if (entry->data[0] & GRUB_ISO9660_RR_DOTDOT)
|
|
- ctx->filename = (char *) "..";
|
|
+ {
|
|
+ if (ctx->filename_alloc)
|
|
+ grub_free (ctx->filename);
|
|
+ ctx->filename_alloc = 0;
|
|
+ ctx->filename = (char *) "..";
|
|
+ }
|
|
else if (entry->len >= 5)
|
|
{
|
|
grub_size_t off = 0, csize = 1;
|