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Fix a nullptr dereference in ZSTD_createCDict_advanced2()

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If the relevant allocation returns NULL, ZSTD_createCDict_advanced_internal()
will return NULL. But ZSTD_createCDict_advanced2() doesn't check for
this and attempts to use the returned pointer anyway, which leads to
a segfault.
This commit is contained in:
Michał Chojnowski 2023-12-16 12:32:52 +01:00
parent 86ead9f4a4
commit 9a3b17c4d6
1 changed files with 1 additions and 1 deletions
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2
lib/compress/zstd_compress.c
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@ -5525,7 +5525,7 @@ ZSTD_CDict* ZSTD_createCDict_advanced2(
cctxParams.useRowMatchFinder, cctxParams.enableDedicatedDictSearch, cctxParams.useRowMatchFinder, cctxParams.enableDedicatedDictSearch,
customMem); customMem);
if (ZSTD_isError( ZSTD_initCDict_internal(cdict, if (!cdict || ZSTD_isError( ZSTD_initCDict_internal(cdict,
dict, dictSize, dict, dictSize,
dictLoadMethod, dictContentType, dictLoadMethod, dictContentType,
cctxParams) )) { cctxParams) )) {