diff mbox series

[scarthgap] libarchive: patch regression of patch for CVE-2025-5918

Message ID 20250825160952.2586119-1-peter.marko@siemens.com
State Under Review
Delegated to: Steve Sakoman
Headers show
Series [scarthgap] libarchive: patch regression of patch for CVE-2025-5918 | expand

Commit Message

Peter Marko Aug. 25, 2025, 4:09 p.m. UTC 
From: Peter Marko <peter.marko@siemens.com>

Picked commit per [1].

[1] https://security-tracker.debian.org/tracker/CVE-2025-5918

Signed-off-by: Peter Marko <peter.marko@siemens.com>
---
 .../libarchive/CVE-2025-5918-0003.patch       | 51 +++++++++++++++++++
 .../libarchive/libarchive_3.7.9.bb            |  1 +
 2 files changed, 52 insertions(+)
 create mode 100644 meta/recipes-extended/libarchive/libarchive/CVE-2025-5918-0003.patch
diff mbox series

Patch

diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2025-5918-0003.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2025-5918-0003.patch
new file mode 100644
index 0000000000..bc6903d41c
--- /dev/null
+++ b/meta/recipes-extended/libarchive/libarchive/CVE-2025-5918-0003.patch
@@ -0,0 +1,51 @@ 
+From 51b4c35bb38b7df4af24de7f103863dd79129b01 Mon Sep 17 00:00:00 2001
+From: Tobias Stoeckmann <tobias@stoeckmann.org>
+Date: Tue, 27 May 2025 17:09:12 +0200
+Subject: [PATCH] Fix FILE_skip regression
+
+The fseek* family of functions return 0 on success, not the new offset.
+This is only true for lseek.
+
+Fixes https://github.com/libarchive/libarchive/issues/2641
+Fixes dcbf1e0ededa95849f098d154a25876ed5754bcf
+
+Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
+
+CVE: CVE-2025-5918
+Upstream-Status: Backport [https://github.com/libarchive/libarchive/commit/51b4c35bb38b7df4af24de7f103863dd79129b01]
+Signed-off-by: Peter Marko <peter.marko@siemens.com>
+---
+ libarchive/archive_read_open_file.c | 11 +++++++----
+ 1 file changed, 7 insertions(+), 4 deletions(-)
+
+diff --git a/libarchive/archive_read_open_file.c b/libarchive/archive_read_open_file.c
+index 6ed18a0c..742923ab 100644
+--- a/libarchive/archive_read_open_file.c
++++ b/libarchive/archive_read_open_file.c
+@@ -132,7 +132,7 @@ FILE_skip(struct archive *a, void *client_data, int64_t request)
+ #else
+ 	long skip = (long)request;
+ #endif
+-	int64_t old_offset, new_offset;
++	int64_t old_offset, new_offset = -1;
+ 	int skip_bits = sizeof(skip) * 8 - 1;
+ 
+ 	(void)a; /* UNUSED */
+@@ -170,11 +170,14 @@ FILE_skip(struct archive *a, void *client_data, int64_t request)
+ #ifdef __ANDROID__
+ 			new_offset = lseek(fileno(mine->f), skip, SEEK_CUR);
+ #elif HAVE__FSEEKI64
+-			new_offset = _fseeki64(mine->f, skip, SEEK_CUR);
++			if (_fseeki64(mine->f, skip, SEEK_CUR) == 0)
++				new_offset = _ftelli64(mine->f);
+ #elif HAVE_FSEEKO
+-			new_offset = fseeko(mine->f, skip, SEEK_CUR);
++			if (fseeko(mine->f, skip, SEEK_CUR) == 0)
++				new_offset = ftello(mine->f);
+ #else
+-			new_offset = fseek(mine->f, skip, SEEK_CUR);
++			if (fseek(mine->f, skip, SEEK_CUR) == 0)
++				new_offset = ftell(mine->f);
+ #endif
+ 			if (new_offset >= 0)
+ 				return (new_offset - old_offset);
diff --git a/meta/recipes-extended/libarchive/libarchive_3.7.9.bb b/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
index f08673ea3b..f4b1be2337 100644
--- a/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
+++ b/meta/recipes-extended/libarchive/libarchive_3.7.9.bb
@@ -37,6 +37,7 @@  SRC_URI = "http://libarchive.org/downloads/libarchive-${PV}.tar.gz \
            file://CVE-2025-5917.patch \
            file://CVE-2025-5918-0001.patch \
            file://CVE-2025-5918-0002.patch \
+           file://CVE-2025-5918-0003.patch \
            "
 UPSTREAM_CHECK_URI = "http://libarchive.org/"