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Kernel: Handle overflow in FileDescription::seek(, SEEK_CUR)

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Brian Gianforcaro 2021-02-21 06:23:37 -08:00 • committed by Andreas Kling
commit 2139e0a201
Notes: sideshowbarker 2024-07-18 22:03:05 +09:00
1 changed files with 2 additions and 0 deletions
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2
Kernel/FileSystem/FileDescription.cpp
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@ -138,6 +138,8 @@ off_t FileDescription::seek(off_t offset, int whence)
new_offset = offset;
break;
case SEEK_CUR:
if (Checked<off_t>::addition_would_overflow(m_current_offset, offset))
return -EOVERFLOW;
new_offset = m_current_offset + offset;
break;
case SEEK_END: