diff mbox series

[wrynose] libarchive: fix CVE-2026-15028

Message ID 20261002110211.11669-1-jakub.szczudlo@nokia.com
State New
Headers show
Series [wrynose] libarchive: fix CVE-2026-15028 | expand

Commit Message

Jakub Szczudlo (Nokia) Oct. 2, 2026, 11:02 a.m. UTC 
Backport patch to fix CVE-2026-15028.

References:
  https://nvd.nist.gov/vuln/detail/CVE-2026-15028

Upstream fix:
  https://github.com/libarchive/libarchive/commit/40b92de1def08e4fc319d55702785f82cedb7ef2

Signed-off-by: Jakub Szczudlo <jakub.szczudlo@nokia.com>
---
 .../libarchive/CVE-2026-15028.patch           | 41 +++++++++++++++++++
 .../libarchive/libarchive_3.8.7.bb            |  1 +
 2 files changed, 42 insertions(+)
 create mode 100644 meta/recipes-extended/libarchive/libarchive/CVE-2026-15028.patch
diff mbox series

Patch

diff --git a/meta/recipes-extended/libarchive/libarchive/CVE-2026-15028.patch b/meta/recipes-extended/libarchive/libarchive/CVE-2026-15028.patch
new file mode 100644
index 0000000000..c63fcf22f2
--- /dev/null
+++ b/meta/recipes-extended/libarchive/libarchive/CVE-2026-15028.patch
@@ -0,0 +1,41 @@ 
+From 40b92de1def08e4fc319d55702785f82cedb7ef2 Mon Sep 17 00:00:00 2001
+From: datauwu <datauwu@users.noreply.github.com>
+Date: Mon, 6 Jul 2026 21:51:15 +0800
+Subject: [PATCH] tar: fix 1-byte OOB read in SUN.holesdata parsing
+
+header_pax_extension() passes PAX attribute values without the trailing
+newline to pax_attribute(). The SUN.holesdata parser read one byte past
+the supplied value when the last numeric field ended at the value
+boundary.
+
+Handle length == 0 before checking *e.
+
+CVE: CVE-2026-15028
+Upstream-Status: Backport [https://github.com/libarchive/libarchive/commit/40b92de1def08e4fc319d55702785f82cedb7ef2]
+Signed-off-by: Jakub Szczudlo <jakub.szczudlo@nokia.com>
+---
+ libarchive/archive_read_support_format_tar.c | 11 ++++-------
+ 1 file changed, 4 insertions(+), 7 deletions(-)
+
+diff --git a/libarchive/archive_read_support_format_tar.c b/libarchive/archive_read_support_format_tar.c
+index e07cfdb63b..1c0441db6c 100644
+--- a/libarchive/archive_read_support_format_tar.c
++++ b/libarchive/archive_read_support_format_tar.c
+@@ -3448,13 +3448,10 @@ pax_attribute_SUN_holesdata(struct archive_read *a, struct tar *tar,
+ 				return (ARCHIVE_FATAL);
+ 			tar->sparse_last->hole = hole;
+ 		}
+-		if (length == 0 || *e == '\n') {
+-			if (length == 0 && *e == '\n') {
+-				return (ARCHIVE_OK);
+-			} else {
+-				return (ARCHIVE_WARN);
+-			}
+-		}
++		if (length == 0)
++			return (ARCHIVE_OK);
++		if (*e == '\n')
++			return (ARCHIVE_WARN);
+ 		p = e + 1;
+ 		length--;
+ 		hole = hole == 0;
diff --git a/meta/recipes-extended/libarchive/libarchive_3.8.7.bb b/meta/recipes-extended/libarchive/libarchive_3.8.7.bb
index afc06f85d4..d4cd0b5b01 100644
--- a/meta/recipes-extended/libarchive/libarchive_3.8.7.bb
+++ b/meta/recipes-extended/libarchive/libarchive_3.8.7.bb
@@ -31,6 +31,7 @@  EXTRA_OECONF += "--enable-largefile --without-iconv"
 
 SRC_URI = "https://libarchive.org/downloads/libarchive-${PV}.tar.gz \
            file://run-ptest \
+           file://CVE-2026-15028.patch \
           "
 UPSTREAM_CHECK_URI = "https://www.libarchive.org/"