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authorRoland McGrath <roland@redhat.com>2009-02-27 19:03:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-02 15:41:30 -0800
commitccbe495caa5e604b04d5a31d7459a6f6a76a756c (patch)
tree9fea231e87d57869e4f6ecbbdb0cbd4a51bb6873 /kernel/seccomp.c
parent778ef1e6cbb049c9bcbf405936ee6f2b6e451892 (diff)
x86-64: syscall-audit: fix 32/64 syscall hole
On x86-64, a 32-bit process (TIF_IA32) can switch to 64-bit mode with ljmp, and then use the "syscall" instruction to make a 64-bit system call. A 64-bit process make a 32-bit system call with int $0x80. In both these cases, audit_syscall_entry() will use the wrong system call number table and the wrong system call argument registers. This could be used to circumvent a syscall audit configuration that filters based on the syscall numbers or argument details. Signed-off-by: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/seccomp.c')
0 files changed, 0 insertions, 0 deletions