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elfutils: Fix multiple CVEs
Backport fixes for: * CVE-2025-1352 - Upstream-Status: Backport from https://sourceware.org/git/?p=elfutils.git;a=commit;h=2636426a091bd6c6f7f02e49ab20d4cdc6bfc753 * CVE-2025-1372 - Upstream-Status: Backport from https://sourceware.org/git/?p=elfutils.git;a=commit;h=73db9d2021cab9e23fd734b0a76a612d52a6f1db (From OE-Core rev: 8ea258ad9c83be5d9548a796f7dda4ac820fc435) Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com> Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Hitendra Prajapati
committed by
Steve Sakoman
Steve Sakoman
parent
4e4cac541d
commit
9c934f60ce
@@ -23,6 +23,8 @@ SRC_URI = "https://sourceware.org/elfutils/ftp/${PV}/${BP}.tar.bz2 \
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file://0001-tests-Makefile.am-compile-test_nlist-with-standard-C.patch \
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file://0001-debuginfod-fix-compilation-on-platforms-without-erro.patch \
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file://0001-debuginfod-debuginfod-client.c-use-long-for-cache-ti.patch \
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file://CVE-2025-1352.patch \
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file://CVE-2025-1372.patch \
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"
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SRC_URI:append:libc-musl = " \
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file://0003-musl-utils.patch \
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153
meta/recipes-devtools/elfutils/files/CVE-2025-1352.patch
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153
meta/recipes-devtools/elfutils/files/CVE-2025-1352.patch
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@@ -0,0 +1,153 @@
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From 2636426a091bd6c6f7f02e49ab20d4cdc6bfc753 Mon Sep 17 00:00:00 2001
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From: Mark Wielaard <mark@klomp.org>
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Date: Sat, 8 Feb 2025 20:00:12 +0100
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Subject: [PATCH] libdw: Simplify __libdw_getabbrev and fix dwarf_offabbrev
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issue
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__libdw_getabbrev could crash on reading a bad abbrev by trying to
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deallocate memory it didn't allocate itself. This could happen because
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dwarf_offabbrev would supply its own memory when calling
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__libdw_getabbrev. No other caller did this.
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Simplify the __libdw_getabbrev common code by not taking external
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memory to put the abbrev result in (this would also not work correctly
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if the abbrev was already cached). And make dwarf_offabbrev explicitly
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copy the result (if there was no error or end of abbrev).
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* libdw/dwarf_getabbrev.c (__libdw_getabbrev): Don't take
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Dwarf_Abbrev result argument. Always just allocate abb when
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abbrev not found in cache.
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(dwarf_getabbrev): Don't pass NULL as last argument to
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__libdw_getabbrev.
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* libdw/dwarf_tag.c (__libdw_findabbrev): Likewise.
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* libdw/dwarf_offabbrev.c (dwarf_offabbrev): Likewise. And copy
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abbrev into abbrevp on success.
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* libdw/libdw.h (dwarf_offabbrev): Document return values.
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* libdw/libdwP.h (__libdw_getabbrev): Don't take Dwarf_Abbrev
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result argument.
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https://sourceware.org/bugzilla/show_bug.cgi?id=32650
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Signed-off-by: Mark Wielaard <mark@klomp.org>
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Upstream-Status: Backport [https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=2636426a091bd6c6f7f02e49ab20d4cdc6bfc753]
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CVE: CVE-2025-1352
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Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
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---
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libdw/dwarf_getabbrev.c | 12 ++++--------
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libdw/dwarf_offabbrev.c | 10 +++++++---
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libdw/dwarf_tag.c | 3 +--
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libdw/libdw.h | 4 +++-
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libdw/libdwP.h | 3 +--
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5 files changed, 16 insertions(+), 16 deletions(-)
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diff --git a/libdw/dwarf_getabbrev.c b/libdw/dwarf_getabbrev.c
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index 13bee49..b19edfe 100644
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--- a/libdw/dwarf_getabbrev.c
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+++ b/libdw/dwarf_getabbrev.c
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@@ -1,5 +1,6 @@
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/* Get abbreviation at given offset.
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Copyright (C) 2003, 2004, 2005, 2006, 2014, 2017 Red Hat, Inc.
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+ Copyright (C) 2025 Mark J. Wielaard <mark@klomp.org>
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2003.
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@@ -38,7 +39,7 @@
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Dwarf_Abbrev *
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internal_function
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__libdw_getabbrev (Dwarf *dbg, struct Dwarf_CU *cu, Dwarf_Off offset,
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- size_t *lengthp, Dwarf_Abbrev *result)
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+ size_t *lengthp)
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{
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/* Don't fail if there is not .debug_abbrev section. */
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if (dbg->sectiondata[IDX_debug_abbrev] == NULL)
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@@ -84,12 +85,7 @@ __libdw_getabbrev (Dwarf *dbg, struct Dwarf_CU *cu, Dwarf_Off offset,
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Dwarf_Abbrev *abb = NULL;
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if (cu == NULL
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|| (abb = Dwarf_Abbrev_Hash_find (&cu->abbrev_hash, code)) == NULL)
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- {
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- if (result == NULL)
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- abb = libdw_typed_alloc (dbg, Dwarf_Abbrev);
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- else
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- abb = result;
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- }
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+ abb = libdw_typed_alloc (dbg, Dwarf_Abbrev);
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else
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{
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foundit = true;
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@@ -182,5 +178,5 @@ dwarf_getabbrev (Dwarf_Die *die, Dwarf_Off offset, size_t *lengthp)
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return NULL;
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}
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- return __libdw_getabbrev (dbg, cu, abbrev_offset + offset, lengthp, NULL);
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+ return __libdw_getabbrev (dbg, cu, abbrev_offset + offset, lengthp);
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}
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diff --git a/libdw/dwarf_offabbrev.c b/libdw/dwarf_offabbrev.c
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index 27cdad6..41df69b 100644
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--- a/libdw/dwarf_offabbrev.c
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+++ b/libdw/dwarf_offabbrev.c
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@@ -41,11 +41,15 @@ dwarf_offabbrev (Dwarf *dbg, Dwarf_Off offset, size_t *lengthp,
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if (dbg == NULL)
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return -1;
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- Dwarf_Abbrev *abbrev = __libdw_getabbrev (dbg, NULL, offset, lengthp,
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- abbrevp);
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+ Dwarf_Abbrev *abbrev = __libdw_getabbrev (dbg, NULL, offset, lengthp);
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if (abbrev == NULL)
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return -1;
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- return abbrev == DWARF_END_ABBREV ? 1 : 0;
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+ if (abbrev == DWARF_END_ABBREV)
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+ return 1;
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+
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+ *abbrevp = *abbrev;
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+
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+ return 0;
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}
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diff --git a/libdw/dwarf_tag.c b/libdw/dwarf_tag.c
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index d784970..218382a 100644
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--- a/libdw/dwarf_tag.c
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+++ b/libdw/dwarf_tag.c
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@@ -53,8 +53,7 @@ __libdw_findabbrev (struct Dwarf_CU *cu, unsigned int code)
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/* Find the next entry. It gets automatically added to the
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hash table. */
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- abb = __libdw_getabbrev (cu->dbg, cu, cu->last_abbrev_offset, &length,
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- NULL);
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+ abb = __libdw_getabbrev (cu->dbg, cu, cu->last_abbrev_offset, &length);
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if (abb == NULL || abb == DWARF_END_ABBREV)
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{
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/* Make sure we do not try to search for it again. */
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diff --git a/libdw/libdw.h b/libdw/libdw.h
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index 64d1689..829cc21 100644
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--- a/libdw/libdw.h
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+++ b/libdw/libdw.h
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@@ -587,7 +587,9 @@ extern int dwarf_srclang (Dwarf_Die *die);
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extern Dwarf_Abbrev *dwarf_getabbrev (Dwarf_Die *die, Dwarf_Off offset,
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size_t *lengthp);
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-/* Get abbreviation at given offset in .debug_abbrev section. */
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+/* Get abbreviation at given offset in .debug_abbrev section. On
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+ success return zero and fills in ABBREVP. When there is no (more)
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+ abbrev at offset returns one. On error returns a negative value. */
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extern int dwarf_offabbrev (Dwarf *dbg, Dwarf_Off offset, size_t *lengthp,
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Dwarf_Abbrev *abbrevp)
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__nonnull_attribute__ (4);
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diff --git a/libdw/libdwP.h b/libdw/libdwP.h
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index 360ad01..05b8364 100644
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--- a/libdw/libdwP.h
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+++ b/libdw/libdwP.h
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@@ -673,8 +673,7 @@ extern Dwarf_Abbrev *__libdw_findabbrev (struct Dwarf_CU *cu,
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/* Get abbreviation at given offset. */
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extern Dwarf_Abbrev *__libdw_getabbrev (Dwarf *dbg, struct Dwarf_CU *cu,
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- Dwarf_Off offset, size_t *lengthp,
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- Dwarf_Abbrev *result)
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+ Dwarf_Off offset, size_t *lengthp)
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__nonnull_attribute__ (1) internal_function;
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/* Get abbreviation of given DIE, and optionally set *READP to the DIE memory
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--
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2.25.1
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50
meta/recipes-devtools/elfutils/files/CVE-2025-1372.patch
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50
meta/recipes-devtools/elfutils/files/CVE-2025-1372.patch
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@@ -0,0 +1,50 @@
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From 73db9d2021cab9e23fd734b0a76a612d52a6f1db Mon Sep 17 00:00:00 2001
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From: Mark Wielaard <mark@klomp.org>
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Date: Sun, 9 Feb 2025 00:07:39 +0100
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Subject: [PATCH] readelf: Skip trying to uncompress sections without a name
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When combining eu-readelf -z with -x or -p to dump the data or strings
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in an (corrupted ELF) unnamed numbered section eu-readelf could crash
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trying to check whether the section name starts with .zdebug. Fix this
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by skipping sections without a name.
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* src/readelf.c (dump_data_section): Don't try to gnu decompress a
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section without a name.
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(print_string_section): Likewise.
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https://sourceware.org/bugzilla/show_bug.cgi?id=32656
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Signed-off-by: Mark Wielaard <mark@klomp.org>
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Upstream-Status: Backport [https://sourceware.org/git/?p=elfutils.git;a=commit;h=73db9d2021cab9e23fd734b0a76a612d52a6f1db]
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CVE: CVE-2025-1372
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Signed-off-by: Hitendra Prajapati <hprajapati@mvista.com>
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---
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src/readelf.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/src/readelf.c b/src/readelf.c
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index 256165d..48eee26 100644
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--- a/src/readelf.c
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+++ b/src/readelf.c
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@@ -12719,7 +12719,7 @@ dump_data_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
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_("Couldn't uncompress section"),
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elf_ndxscn (scn));
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}
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- else if (startswith (name, ".zdebug"))
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+ else if (name && startswith (name, ".zdebug"))
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{
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if (elf_compress_gnu (scn, 0, 0) < 0)
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printf ("WARNING: %s [%zd]\n",
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@@ -12770,7 +12770,7 @@ print_string_section (Elf_Scn *scn, const GElf_Shdr *shdr, const char *name)
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_("Couldn't uncompress section"),
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elf_ndxscn (scn));
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}
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- else if (startswith (name, ".zdebug"))
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+ else if (name && startswith (name, ".zdebug"))
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{
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if (elf_compress_gnu (scn, 0, 0) < 0)
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printf ("WARNING: %s [%zd]\n",
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--
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2.25.1
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