buffer: fix transcode for single-byte enc to ucs2 #9838
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Fix `buffer.transcode()` for transcoding from single-byte character encodings to UCS2. These would previously perform out-of-bounds reads due to an incorrect `sizeof()` expression. Fixes: nodejs#9834
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Nov 29, 2016
| MaybeStackBuffer<UChar> destbuf(source_length); | ||
| Converter from(fromEncoding); | ||
| const size_t length_in_chars = source_length * sizeof(*destbuf); | ||
| const size_t length_in_chars = source_length * sizeof(UChar); |
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The other instances of sizeof in this file use **destbuf or UChar. I’m fine with using destbuf[0] everywhere but right now I wouldn’t want to add more confusion here.
trevnorris
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Nov 29, 2016
jasnell
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Dec 5, 2016
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Landed in 69b1a76 |
addaleax
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Dec 6, 2016
Fix `buffer.transcode()` for transcoding from single-byte character encodings to UCS2. These would previously perform out-of-bounds reads due to an incorrect `sizeof()` expression. Fixes: #9834 PR-URL: #9838 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Trevor Norris <[email protected]> Reviewed-By: James M Snell <[email protected]>
addaleax
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Dec 6, 2016
Fix `buffer.transcode()` for transcoding from single-byte character encodings to UCS2. These would previously perform out-of-bounds reads due to an incorrect `sizeof()` expression. Fixes: #9834 PR-URL: #9838 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Trevor Norris <[email protected]> Reviewed-By: James M Snell <[email protected]>
Fishrock123
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Dec 6, 2016
Notable changes: * buffer: - Reverted the runtime deprecation of calling `Buffer()` without `new`. (Anna Henningsen) #9529 - Fixed `buffer.transcode()` for single-byte character encodings to `UCS2`. (Anna Henningsen) #9838 * promise: `--trace-warnings` now produces useful stacktraces for Promise warnings. (Anna Henningsen) #9525 * repl: Fixed a bug preventing correct parsing of generator functions. (Teddy Katz) #9852 * V8: Fixed a significant `instanceof` performance regression. (Franziska Hinkelmann) #9730 PR-URL: #10127
imyller
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Dec 7, 2016
Notable changes:
* buffer:
- Reverted the runtime deprecation of calling `Buffer()` without
`new`. (Anna Henningsen) nodejs/node#9529
- Fixed `buffer.transcode()` for single-byte character
encodings to `UCS2`. (Anna Henningsen)
nodejs/node#9838
* promise: `--trace-warnings` now produces useful stacktraces for
Promise warnings. (Anna Henningsen)
nodejs/node#9525
* repl: Fixed a bug preventing correct parsing of generator functions.
(Teddy Katz) nodejs/node#9852
* V8: Fixed a significant `instanceof` performance regression.
(Franziska Hinkelmann) nodejs/node#9730
Signed-off-by: Ilkka Myller <[email protected]>
jmdarling
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Dec 8, 2016
Fix `buffer.transcode()` for transcoding from single-byte character encodings to UCS2. These would previously perform out-of-bounds reads due to an incorrect `sizeof()` expression. Fixes: nodejs#9834 PR-URL: nodejs#9838 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Trevor Norris <[email protected]> Reviewed-By: James M Snell <[email protected]>
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@addaleax this is not landing cleanly on v6.x or v4.x There are some other commits that need to get pulled for this to land cleanly, should we backport? |
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@thealphanerd This affects a feature added in #9038, which exists only in v7. I’m removing the lts-watch labels here and left a comment over there, let me know if you need anything else :) |
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Checklist
make -j8 test(UNIX), orvcbuild test nosign(Windows) passesAffected core subsystem(s)
buffer
Description of change
Fix
buffer.transcode()for transcoding from single-byte characterencodings to UCS2.
These would previously perform out-of-bounds reads due to an
incorrect
sizeof()expression.Fixes: #9834
/cc @nodejs/buffer