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author | Khem Raj <raj.khem@gmail.com> | 2022-08-14 19:49:50 -0700 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2022-08-16 14:55:47 +0100 |
commit | f7f089a89a9ba83aa62e4ca1fe9a6b8649b29259 (patch) | |
tree | 4cd714f999df2085292b0933cf54bc357a1aca6b /meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch | |
parent | a7e9fbb085c3c9463818a80faea6610e498b95c8 (diff) | |
download | openembedded-core-contrib-f7f089a89a9ba83aa62e4ca1fe9a6b8649b29259.tar.gz |
zlib: Resolve CVE-2022-37434
Backport needed fixes
CVE: CVE-2022-37434
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Cc: Paul Eggleton <bluelightning@bluelightning.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch')
-rw-r--r-- | meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch b/meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch new file mode 100644 index 0000000000..96ab563121 --- /dev/null +++ b/meta/recipes-core/zlib/zlib/0001-Fix-a-bug-when-getting-a-gzip-header-extra-field-wit.patch @@ -0,0 +1,38 @@ +From eff308af425b67093bab25f80f1ae950166bece1 Mon Sep 17 00:00:00 2001 +From: Mark Adler <fork@madler.net> +Date: Sat, 30 Jul 2022 15:51:11 -0700 +Subject: [PATCH] Fix a bug when getting a gzip header extra field with inflate(). + +If the extra field was larger than the space the user provided with +inflateGetHeader(), and if multiple calls of inflate() delivered +the extra header data, then there could be a buffer overflow of the +provided space. This commit assures that provided space is not +exceeded. + +CVE: CVE-2022-37434 +Upstream-Status: Backport [https://github.com/madler/zlib/commit/eff308af425b67093bab25f80f1ae950166be] +Signed-off-by: Khem Raj <raj.khem@gmail.com> +--- + inflate.c | 5 +++-- + 1 file changed, 3 insertions(+), 2 deletions(-) + +diff --git a/inflate.c b/inflate.c +index 7be8c63..7a72897 100644 +--- a/inflate.c ++++ b/inflate.c +@@ -763,9 +763,10 @@ int flush; + copy = state->length; + if (copy > have) copy = have; + if (copy) { ++ len = state->head->extra_len - state->length; + if (state->head != Z_NULL && +- state->head->extra != Z_NULL) { +- len = state->head->extra_len - state->length; ++ state->head->extra != Z_NULL && ++ len < state->head->extra_max) { + zmemcpy(state->head->extra + len, next, + len + copy > state->head->extra_max ? + state->head->extra_max - len : copy); +-- +2.37.2 + |