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author | Hugh Dickins <hugh@veritas.com> | 2009-03-28 23:16:03 +0000 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-28 17:30:00 -0700 |
commit | 53e9309e01277ec99c38e84e0ca16921287cf470 (patch) | |
tree | bc70d617e1898e5b0fdf161edafa1808ae8fa529 /fs/internal.h | |
parent | 07d43ba98621f08e252a48c96b258b4d572b0257 (diff) | |
download | op-kernel-dev-53e9309e01277ec99c38e84e0ca16921287cf470.zip op-kernel-dev-53e9309e01277ec99c38e84e0ca16921287cf470.tar.gz |
compat_do_execve should unshare_files
2.6.26's commit fd8328be874f4190a811c58cd4778ec2c74d2c05
"sanitize handling of shared descriptor tables in failing execve()"
moved the unshare_files() from flush_old_exec() and several binfmts
to the head of do_execve(); but forgot to make the same change to
compat_do_execve(), leaving a CLONE_FILES files_struct shared across
exec from a 32-bit process on a 64-bit kernel.
It's arguable whether the files_struct really ought to be unshared
across exec; but 2.6.1 made that so to stop the loading binary's fd
leaking into other threads, and a 32-bit process on a 64-bit kernel
ought to behave in the same way as 32 on 32 and 64 on 64.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/internal.h')
0 files changed, 0 insertions, 0 deletions