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gdb: Fix CVE-2023-39129

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CVE: CVE-2023-39129
(From OE-Core rev: 67b62fd57d7073b42db2747227d07841d0d064e3)

Signed-off-by: Deepthi Hemraj <Deepthi.Hemraj@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Deepthi Hemraj
2024-02-05 04:31:09 -08:00
committed by Steve Sakoman
parent 698ba6a8ed
commit d35f65d419
2 changed files with 51 additions and 0 deletions
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1
meta/recipes-devtools/gdb/gdb.inc
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@@ -15,5 +15,6 @@ SRC_URI = "${GNU_MIRROR}/gdb/gdb-${PV}.tar.xz \
file://0009-Fix-invalid-sigprocmask-call.patch \
file://0010-gdbserver-ctrl-c-handling.patch \
file://0011-CVE-2023-39128.patch \
file://0012-CVE-2023-39129.patch \
"
SRC_URI[sha256sum] = "1497c36a71881b8671a9a84a0ee40faab788ca30d7ba19d8463c3cc787152e32"

50
meta/recipes-devtools/gdb/gdb/0012-CVE-2023-39129.patch Normal file
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@@ -0,0 +1,50 @@
From: Keith Seitz <keiths@...>
Date: Wed, 2 Aug 2023 15:35:11 +0000 (-0700)
Subject: Verify COFF symbol stringtab offset
X-Git-Tag: gdb-14-branchpoint~473
X-Git-Url: https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=58abdf887821a5da09ba184c6e400a3bc5cccd5a
Verify COFF symbol stringtab offset
This patch addresses an issue with malformed/fuzzed debug information that
was recently reported in gdb/30639. That bug specifically deals with
an ASAN issue, but the reproducer provided by the reporter causes a
another failure outside of ASAN:
Upstream-Status: Backport [https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff_plain;h=58abdf887821a5da09ba184c6e400a3bc5cccd5a]
CVE: CVE-2023-39129
Signed-off-by: Deepthi Hemraj <Deepthi.Hemraj@windriver.com>
diff --git a/gdb/coffread.c b/gdb/coffread.c
--- a/gdb/coffread.c
+++ b/gdb/coffread.c
@@ -159,6 +160,7 @@ static file_ptr linetab_offset;
static file_ptr linetab_size;
static char *stringtab = NULL;
+static long stringtab_length = 0;
extern void stabsread_clear_cache (void);
@@ -1303,6 +1298,7 @@ init_stringtab (bfd *abfd, file_ptr offset, gdb::unique_xmalloc_ptr<char> *stora
/* This is in target format (probably not very useful, and not
currently used), not host format. */
memcpy (stringtab, lengthbuf, sizeof lengthbuf);
+ stringtab_length = length;
if (length == sizeof length) /* Empty table -- just the count. */
return 0;
@@ -1322,8 +1318,9 @@ getsymname (struct internal_syment *symbol_entry)
if (symbol_entry->_n._n_n._n_zeroes == 0)
{
- /* FIXME: Probably should be detecting corrupt symbol files by
- seeing whether offset points to within the stringtab. */
+ if (symbol_entry->_n._n_n._n_offset > stringtab_length)
+ error (_("COFF Error: string table offset (%ld) outside string table (length %ld)"),
+ symbol_entry->_n._n_n._n_offset, stringtab_length);
result = stringtab + symbol_entry->_n._n_n._n_offset;
}
else