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Kernel: Use copy_n_from_user in sys$setgroups to check for overflow

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Brian Gianforcaro 2021-02-21 08:05:09 -08:00 • committed by Andreas Kling
commit d934e77522
Notes: sideshowbarker 2024-07-18 22:02:53 +09:00
1 changed files with 1 additions and 1 deletions
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2
Kernel/Syscalls/setuid.cpp
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@ -150,7 +150,7 @@ int Process::sys$setgroups(ssize_t count, Userspace<const gid_t*> user_gids)
Vector<gid_t> gids; Vector<gid_t> gids;
gids.resize(count); gids.resize(count);
if (!copy_from_user(gids.data(), user_gids.unsafe_userspace_ptr(), sizeof(gid_t) * count)) if (!copy_n_from_user(gids.data(), user_gids, count))
return -EFAULT; return -EFAULT;
HashTable<gid_t> unique_extra_gids; HashTable<gid_t> unique_extra_gids;