From ef80776d27dbc3914b43e6437c19dc2db4fbfbdc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=98rjan=20Malde?= Date: Tue, 21 Feb 2023 22:22:21 +0100 Subject: patches/tar/CVE-2022-48303.patch: new patch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Ørjan Malde --- patches/tar/CVE-2022-48303.patch | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 patches/tar/CVE-2022-48303.patch (limited to 'patches') diff --git a/patches/tar/CVE-2022-48303.patch b/patches/tar/CVE-2022-48303.patch new file mode 100644 index 00000000..6dd068b9 --- /dev/null +++ b/patches/tar/CVE-2022-48303.patch @@ -0,0 +1,30 @@ +From 3da78400eafcccb97e2f2fd4b227ea40d794ede8 Mon Sep 17 00:00:00 2001 +From: Sergey Poznyakoff +Date: Sat, 11 Feb 2023 11:57:39 +0200 +Subject: Fix boundary checking in base-256 decoder + +* src/list.c (from_header): Base-256 encoding is at least 2 bytes +long. +--- + src/list.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/src/list.c b/src/list.c +index 9fafc42..86bcfdd 100644 +--- a/src/list.c ++++ b/src/list.c +@@ -881,8 +881,9 @@ from_header (char const *where0, size_t digs, char const *type, + where++; + } + } +- else if (*where == '\200' /* positive base-256 */ +- || *where == '\377' /* negative base-256 */) ++ else if (where <= lim - 2 ++ && (*where == '\200' /* positive base-256 */ ++ || *where == '\377' /* negative base-256 */)) + { + /* Parse base-256 output. A nonnegative number N is + represented as (256**DIGS)/2 + N; a negative number -N is +-- +cgit v1.1 + -- cgit v1.2.3