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| author | practicalswift <practicalswift@users.noreply.github.com> | 2019-01-06 16:38:32 +0100 |
|---|---|---|
| committer | practicalswift <practicalswift@users.noreply.github.com> | 2019-01-06 17:45:53 +0100 |
| commit | ca126d490b0ff6960e135f3c77b2b2d4892a5744 (patch) | |
| tree | f7255fed8ac1451d6438eb058f640cc58f0fe0a8 /src/support/lockedpool.cpp | |
| parent | 9c719987718d9fcc3a689e50f5212acc7ead7606 (diff) | |
| download | bitcoin-ca126d490b0ff6960e135f3c77b2b2d4892a5744.tar.xz | |
Fix out-of-bounds write in case of failing mmap(...) in PosixLockedPageAllocator::AllocateLocked
Diffstat (limited to 'src/support/lockedpool.cpp')
| -rw-r--r-- | src/support/lockedpool.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp index 8d577cf521..627018083e 100644 --- a/src/support/lockedpool.cpp +++ b/src/support/lockedpool.cpp @@ -248,6 +248,9 @@ void *PosixLockedPageAllocator::AllocateLocked(size_t len, bool *lockingSuccess) void *addr; len = align_up(len, page_size); addr = mmap(nullptr, len, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); + if (addr == MAP_FAILED) { + return nullptr; + } if (addr) { *lockingSuccess = mlock(addr, len) == 0; } |