diff options
Diffstat (limited to 'meta-openembedded/meta-oe/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7574.patch')
-rw-r--r-- | meta-openembedded/meta-oe/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7574.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta-openembedded/meta-oe/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7574.patch b/meta-openembedded/meta-oe/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7574.patch new file mode 100644 index 000000000..9fd53da29 --- /dev/null +++ b/meta-openembedded/meta-oe/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7574.patch @@ -0,0 +1,68 @@ +# HG changeset patch +# User Petr Písař <ppisar@redhat.com> +# Date 1560181859 25200 +# Mon Jun 10 08:50:59 2019 -0700 +# Branch SDL-1.2 +# Node ID a6e3d2f5183e1cc300ad993e10e9ce077e13bd9c +# Parent 388987dff7bf8f1e214e69c2e4f1aa31e06396b5 +CVE-2019-7574: Fix a buffer overread in IMA_ADPCM_decode +If data chunk was shorter than expected based on a WAV format +definition, IMA_ADPCM_decode() tried to read past the data chunk +buffer. This patch fixes it. + +CVE-2019-7574 +https://bugzilla.libsdl.org/show_bug.cgi?id=4496 + +Signed-off-by: Petr Písař <ppisar@redhat.com> + +CVE: CVE-2019-7574 +Upstream-Status: Backport +Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> + +diff -r 388987dff7bf -r a6e3d2f5183e src/audio/SDL_wave.c +--- a/src/audio/SDL_wave.c Sat Jun 08 18:02:09 2019 -0700 ++++ b/src/audio/SDL_wave.c Mon Jun 10 08:50:59 2019 -0700 +@@ -331,7 +331,7 @@ + static int IMA_ADPCM_decode(Uint8 **audio_buf, Uint32 *audio_len) + { + struct IMA_ADPCM_decodestate *state; +- Uint8 *freeable, *encoded, *decoded; ++ Uint8 *freeable, *encoded, *encoded_end, *decoded; + Sint32 encoded_len, samplesleft; + unsigned int c, channels; + +@@ -347,6 +347,7 @@ + /* Allocate the proper sized output buffer */ + encoded_len = *audio_len; + encoded = *audio_buf; ++ encoded_end = encoded + encoded_len; + freeable = *audio_buf; + *audio_len = (encoded_len/IMA_ADPCM_state.wavefmt.blockalign) * + IMA_ADPCM_state.wSamplesPerBlock* +@@ -362,6 +363,7 @@ + while ( encoded_len >= IMA_ADPCM_state.wavefmt.blockalign ) { + /* Grab the initial information for this block */ + for ( c=0; c<channels; ++c ) { ++ if (encoded + 4 > encoded_end) goto invalid_size; + /* Fill the state information for this block */ + state[c].sample = ((encoded[1]<<8)|encoded[0]); + encoded += 2; +@@ -384,6 +386,7 @@ + samplesleft = (IMA_ADPCM_state.wSamplesPerBlock-1)*channels; + while ( samplesleft > 0 ) { + for ( c=0; c<channels; ++c ) { ++ if (encoded + 4 > encoded_end) goto invalid_size; + Fill_IMA_ADPCM_block(decoded, encoded, + c, channels, &state[c]); + encoded += 4; +@@ -395,6 +398,10 @@ + } + SDL_free(freeable); + return(0); ++invalid_size: ++ SDL_SetError("Unexpected chunk length for an IMA ADPCM decoder"); ++ SDL_free(freeable); ++ return(-1); + } + + SDL_AudioSpec * SDL_LoadWAV_RW (SDL_RWops *src, int freesrc, |