| Package | Affected versions | Patched versions |
|---|---|---|
| hhvm | = 4.94.0= 4.95.0= 4.96.0= 4.97.0= 4.98.0≥ 4.57.0, < 4.80.2≥ 4.81.0, < 4.93.2< 4.56.3 | 4.80.24.93.24.56.3 |
xbuf_format_converter, used as part of exif_read_data, was appending a terminating null character to the generated string, but was not using its standard append char function. As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
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