diff options
Diffstat (limited to 'libre/sdl/SDL-1.2.15-CVE-2019-7574-Fix-a-buffer-overread-in-IMA_ADPCM_dec.patch')
| -rw-r--r-- | libre/sdl/SDL-1.2.15-CVE-2019-7574-Fix-a-buffer-overread-in-IMA_ADPCM_dec.patch | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/libre/sdl/SDL-1.2.15-CVE-2019-7574-Fix-a-buffer-overread-in-IMA_ADPCM_dec.patch b/libre/sdl/SDL-1.2.15-CVE-2019-7574-Fix-a-buffer-overread-in-IMA_ADPCM_dec.patch deleted file mode 100644 index 0bae80ff8..000000000 --- a/libre/sdl/SDL-1.2.15-CVE-2019-7574-Fix-a-buffer-overread-in-IMA_ADPCM_dec.patch +++ /dev/null @@ -1,71 +0,0 @@ -From 9b2eee24768889378032077423cb6a3221a8ad18 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com> -Date: Thu, 14 Feb 2019 15:41:47 +0100 -Subject: [PATCH] CVE-2019-7574: Fix a buffer overread in IMA_ADPCM_decode -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -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> ---- - src/audio/SDL_wave.c | 9 ++++++++- - 1 file changed, 8 insertions(+), 1 deletion(-) - -diff --git a/src/audio/SDL_wave.c b/src/audio/SDL_wave.c -index b6c49de..2968b3d 100644 ---- a/src/audio/SDL_wave.c -+++ b/src/audio/SDL_wave.c -@@ -334,7 +334,7 @@ static void Fill_IMA_ADPCM_block(Uint8 *decoded, Uint8 *encoded, - 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; - -@@ -350,6 +350,7 @@ static int IMA_ADPCM_decode(Uint8 **audio_buf, Uint32 *audio_len) - /* 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* -@@ -365,6 +366,7 @@ static int IMA_ADPCM_decode(Uint8 **audio_buf, Uint32 *audio_len) - 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; -@@ -387,6 +389,7 @@ static int IMA_ADPCM_decode(Uint8 **audio_buf, Uint32 *audio_len) - 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; -@@ -398,6 +401,10 @@ static int IMA_ADPCM_decode(Uint8 **audio_buf, Uint32 *audio_len) - } - 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, --- -2.20.1 - |