diff options
Diffstat (limited to 'meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2021-3246_2.patch')
| -rw-r--r-- | meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2021-3246_2.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2021-3246_2.patch b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2021-3246_2.patch new file mode 100644 index 0000000000..d6b03d7d4d --- /dev/null +++ b/meta/recipes-multimedia/libsndfile/libsndfile1/CVE-2021-3246_2.patch @@ -0,0 +1,44 @@ +From deb669ee8be55a94565f6f8a6b60890c2e7c6f32 Mon Sep 17 00:00:00 2001 +From: bobsayshilol <bobsayshilol@live.co.uk> +Date: Thu, 18 Feb 2021 21:52:09 +0000 +Subject: [PATCH 2/2] ms_adpcm: Fix and extend size checks + +'blockalign' is the size of a block, and each block contains 7 samples +per channel as part of the preamble, so check against 'samplesperblock' +rather than 'blockalign'. Also add an additional check that the block +is big enough to hold the samples it claims to hold. + +https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26803 + +Upstream-Status: Backport +CVE: CVE-2021-3246 patch 2 +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + src/ms_adpcm.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +diff --git a/src/ms_adpcm.c b/src/ms_adpcm.c +index 5e8f1a31..a21cb994 100644 +--- a/src/ms_adpcm.c ++++ b/src/ms_adpcm.c +@@ -128,8 +128,14 @@ wavlike_msadpcm_init (SF_PRIVATE *psf, int blockalign, int samplesperblock) + if (psf->file.mode == SFM_WRITE) + samplesperblock = 2 + 2 * (blockalign - 7 * psf->sf.channels) / psf->sf.channels ; + +- if (blockalign < 7 * psf->sf.channels) +- { psf_log_printf (psf, "*** Error blockalign (%d) should be > %d.\n", blockalign, 7 * psf->sf.channels) ; ++ /* There's 7 samples per channel in the preamble of each block */ ++ if (samplesperblock < 7 * psf->sf.channels) ++ { psf_log_printf (psf, "*** Error samplesperblock (%d) should be >= %d.\n", samplesperblock, 7 * psf->sf.channels) ; ++ return SFE_INTERNAL ; ++ } ; ++ ++ if (2 * blockalign < samplesperblock * psf->sf.channels) ++ { psf_log_printf (psf, "*** Error blockalign (%d) should be >= %d.\n", blockalign, samplesperblock * psf->sf.channels / 2) ; + return SFE_INTERNAL ; + } ; + +-- +2.25.1 + |