diff options
Diffstat (limited to 'app-arch/tar/files/tar-1.34-fix-cve-2022-48303.patch')
| -rw-r--r-- | app-arch/tar/files/tar-1.34-fix-cve-2022-48303.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/app-arch/tar/files/tar-1.34-fix-cve-2022-48303.patch b/app-arch/tar/files/tar-1.34-fix-cve-2022-48303.patch new file mode 100644 index 000000000000..7ef604b52378 --- /dev/null +++ b/app-arch/tar/files/tar-1.34-fix-cve-2022-48303.patch @@ -0,0 +1,32 @@ +Gentoo Bug: https://bugs.gentoo.org/898176 +Upstream Commit Link: https://git.savannah.gnu.org/cgit/tar.git/commit/?id=3da78400eafcccb97e2f2fd4b227ea40d794ede8 + +From 3da78400eafcccb97e2f2fd4b227ea40d794ede8 Mon Sep 17 00:00:00 2001 +From: Sergey Poznyakoff <gray@gnu.org> +Date: Sat, 11 Feb 2023 11:57:39 +0200 +Subject: [PATCH] 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 9fafc425..86bcfdd1 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 +-- +2.39.2.637.g21b0678d19-goog |