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busybox: upgrade 1.33.0 -> 1.33.1
0001-decompress_gunzip-Fix-DoS-if-gzip-is-corrupt.patch removed since it is included in 1.33.1 (From OE-Core rev: 544236b12a72ee5be5ef0147249ead112082b871) Signed-off-by: Zheng Ruoqin <zhengrq.fnst@cn.fujitsu.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Richard Purdie
parent
764db5fde8
commit
c8ea2cb37d
@@ -1,58 +0,0 @@
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From fe791386ebc270219ca00406c9fdadc5130b64ee Mon Sep 17 00:00:00 2001
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From: Samuel Sapalski <samuel.sapalski@nokia.com>
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Date: Wed, 3 Mar 2021 16:31:22 +0100
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Subject: [PATCH] decompress_gunzip: Fix DoS if gzip is corrupt
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On certain corrupt gzip files, huft_build will set the error bit on
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the result pointer. If afterwards abort_unzip is called huft_free
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might run into a segmentation fault or an invalid pointer to
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free(p).
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In order to mitigate this, we check in huft_free if the error bit
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is set and clear it before the linked list is freed.
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Signed-off-by: Samuel Sapalski <samuel.sapalski@nokia.com>
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Signed-off-by: Peter Kaestle <peter.kaestle@nokia.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Upstream-Status: Backport
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CVE: CVE-2021-28831
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Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
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---
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archival/libarchive/decompress_gunzip.c | 12 ++++++++++--
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1 file changed, 10 insertions(+), 2 deletions(-)
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diff --git a/archival/libarchive/decompress_gunzip.c b/archival/libarchive/decompress_gunzip.c
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index eb3b64930..e93cd5005 100644
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--- a/archival/libarchive/decompress_gunzip.c
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+++ b/archival/libarchive/decompress_gunzip.c
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@@ -220,10 +220,20 @@ static const uint8_t border[] ALIGN1 = {
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* each table.
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* t: table to free
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*/
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+#define BAD_HUFT(p) ((uintptr_t)(p) & 1)
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+#define ERR_RET ((huft_t*)(uintptr_t)1)
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static void huft_free(huft_t *p)
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{
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huft_t *q;
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+ /*
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+ * If 'p' has the error bit set we have to clear it, otherwise we might run
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+ * into a segmentation fault or an invalid pointer to free(p)
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+ */
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+ if (BAD_HUFT(p)) {
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+ p = (huft_t*)((uintptr_t)(p) ^ (uintptr_t)(ERR_RET));
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+ }
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+
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/* Go through linked list, freeing from the malloced (t[-1]) address. */
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while (p) {
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q = (--p)->v.t;
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@@ -289,8 +299,6 @@ static unsigned fill_bitbuffer(STATE_PARAM unsigned bitbuffer, unsigned *current
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* or a valid pointer to a Huffman table, ORed with 0x1 if incompete table
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* is given: "fixed inflate" decoder feeds us such data.
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*/
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-#define BAD_HUFT(p) ((uintptr_t)(p) & 1)
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-#define ERR_RET ((huft_t*)(uintptr_t)1)
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static huft_t* huft_build(const unsigned *b, const unsigned n,
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const unsigned s, const struct cp_ext *cp_ext,
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unsigned *m)
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@@ -47,9 +47,8 @@ SRC_URI = "https://busybox.net/downloads/busybox-${PV}.tar.bz2;name=tarball \
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file://0001-sysctl-ignore-EIO-of-stable_secret-below-proc-sys-ne.patch \
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file://0001-sysctl-ignore-EIO-of-stable_secret-below-proc-sys-ne.patch \
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file://rev.cfg \
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file://rev.cfg \
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file://pgrep.cfg \
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file://pgrep.cfg \
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file://0001-decompress_gunzip-Fix-DoS-if-gzip-is-corrupt.patch \
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file://0001-gen_build_files-Use-C-locale-when-calling-sed-on-glo.patch \
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file://0001-gen_build_files-Use-C-locale-when-calling-sed-on-glo.patch \
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"
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"
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SRC_URI_append_libc-musl = " file://musl.cfg "
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SRC_URI_append_libc-musl = " file://musl.cfg "
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SRC_URI[tarball.sha256sum] = "d568681c91a85edc6710770cebc1e80e042ad74d305b5c2e6d57a5f3de3b8fbd"
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SRC_URI[tarball.sha256sum] = "12cec6bd2b16d8a9446dd16130f2b92982f1819f6e1c5f5887b6db03f5660d28"
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