diff options
Diffstat (limited to 'meta/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7576.patch')
| -rw-r--r-- | meta/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7576.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/meta/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7576.patch b/meta/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7576.patch new file mode 100644 index 0000000000..d9a505217b --- /dev/null +++ b/meta/recipes-graphics/libsdl/libsdl-1.2.15/CVE-2019-7576.patch @@ -0,0 +1,80 @@ +# HG changeset patch +# User Petr Písař <ppisar@redhat.com> +# Date 1560182783 25200 +# Mon Jun 10 09:06:23 2019 -0700 +# Branch SDL-1.2 +# Node ID fcbecae427951bac1684baaba2ade68221315140 +# Parent a8afedbcaea0e84921dc770195c4699bda3ccdc5 +CVE-2019-7573, CVE-2019-7576: Fix buffer overreads in InitMS_ADPCM +If MS ADPCM format chunk was too short, InitMS_ADPCM() parsing it +could read past the end of chunk data. This patch fixes it. + +CVE-2019-7573 +https://bugzilla.libsdl.org/show_bug.cgi?id=4491 +CVE-2019-7576 +https://bugzilla.libsdl.org/show_bug.cgi?id=4490 + +Signed-off-by: Petr Písař <ppisar@redhat.com> + +CVE: CVE-2019-7573 +CVE: CVE-2019-7576 +Upstream-Status: Backport +Signed-off-by: Anuj Mittal <anuj.mittal@intel.com> + +diff -r a8afedbcaea0 -r fcbecae42795 src/audio/SDL_wave.c +--- a/src/audio/SDL_wave.c Mon Jun 10 08:57:11 2019 -0700 ++++ b/src/audio/SDL_wave.c Mon Jun 10 09:06:23 2019 -0700 +@@ -44,12 +44,13 @@ + struct MS_ADPCM_decodestate state[2]; + } MS_ADPCM_state; + +-static int InitMS_ADPCM(WaveFMT *format) ++static int InitMS_ADPCM(WaveFMT *format, int length) + { +- Uint8 *rogue_feel; ++ Uint8 *rogue_feel, *rogue_feel_end; + int i; + + /* Set the rogue pointer to the MS_ADPCM specific data */ ++ if (length < sizeof(*format)) goto too_short; + MS_ADPCM_state.wavefmt.encoding = SDL_SwapLE16(format->encoding); + MS_ADPCM_state.wavefmt.channels = SDL_SwapLE16(format->channels); + MS_ADPCM_state.wavefmt.frequency = SDL_SwapLE32(format->frequency); +@@ -58,9 +59,11 @@ + MS_ADPCM_state.wavefmt.bitspersample = + SDL_SwapLE16(format->bitspersample); + rogue_feel = (Uint8 *)format+sizeof(*format); ++ rogue_feel_end = (Uint8 *)format + length; + if ( sizeof(*format) == 16 ) { + rogue_feel += sizeof(Uint16); + } ++ if (rogue_feel + 4 > rogue_feel_end) goto too_short; + MS_ADPCM_state.wSamplesPerBlock = ((rogue_feel[1]<<8)|rogue_feel[0]); + rogue_feel += sizeof(Uint16); + MS_ADPCM_state.wNumCoef = ((rogue_feel[1]<<8)|rogue_feel[0]); +@@ -70,12 +73,16 @@ + return(-1); + } + for ( i=0; i<MS_ADPCM_state.wNumCoef; ++i ) { ++ if (rogue_feel + 4 > rogue_feel_end) goto too_short; + MS_ADPCM_state.aCoeff[i][0] = ((rogue_feel[1]<<8)|rogue_feel[0]); + rogue_feel += sizeof(Uint16); + MS_ADPCM_state.aCoeff[i][1] = ((rogue_feel[1]<<8)|rogue_feel[0]); + rogue_feel += sizeof(Uint16); + } + return(0); ++too_short: ++ SDL_SetError("Unexpected length of a chunk with a MS ADPCM format"); ++ return(-1); + } + + static Sint32 MS_ADPCM_nibble(struct MS_ADPCM_decodestate *state, +@@ -495,7 +502,7 @@ + break; + case MS_ADPCM_CODE: + /* Try to understand this */ +- if ( InitMS_ADPCM(format) < 0 ) { ++ if ( InitMS_ADPCM(format, lenread) < 0 ) { + was_error = 1; + goto done; + } |