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fix-CVE-2022-48303.patch
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File fix-CVE-2022-48303.patch of Package tar
From 1d530107a24d71e798727d7f0afa0833473d1074 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Matej=20Mu=C5=BEila?= <mmuzila@gmail.com> Date: Wed, 11 Jan 2023 08:55:58 +0100 Subject: [PATCH] Fix savannah bug #62387 * src/list.c (from_header): Check for the end of field after leading byte (0x80 or 0xff) of base-256 encoded header value --- src/list.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/list.c b/src/list.c index 9fafc425..bf41b581 100644 --- a/src/list.c +++ b/src/list.c @@ -895,6 +895,12 @@ from_header (char const *where0, size_t digs, char const *type, << (CHAR_BIT * sizeof (uintmax_t) - LG_256 - (LG_256 - 2))); value = (*where++ & ((1 << (LG_256 - 2)) - 1)) - signbit; + if (where == lim) + { + if (type && !silent) + ERROR ((0, 0, _("Archive base-256 value is invalid"))); + return -1; + } for (;;) { value = (value << LG_256) + (unsigned char) *where++; -- 2.38.1
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