Wireshark mailing list archives
Re: Enabling linux kernel jit compiler from dumpcap?
From: Guy Harris <guy () alum mit edu>
Date: Fri, 23 Aug 2013 13:22:28 -0700
On Aug 23, 2013, at 1:01 PM, Réczey Bálint <rbalint () gmail com> wrote:
FreeBSD has a different implementation AFAIK
The first implementation was the WinPcap one, for x86-32 or IA-32 or whatever you want to call the 32-bit version of x86. The FreeBSD people picked that one up, added x86-64 support, and, if I remember, didn't bother to cite the WinPcap folks (Loris Degioanni was a bit annoyed at that, as I remember). Both have BSDish licenses, which probably got in the way of adopting them for Linux, so I suspect the Linux implementation is independent (just as its implementation of the BPF interpreter is different).
and covers fewer architectures.
Linux's JIT also handles PPC, although, as POWER/PowerPC/Power ISA has fixed-length instructions, it's apparently not vulnerable to the attack mentioned in the post Jakub cited. If they decided to support S/3x0-64^Wz/Architecture, that *would* be vulnerable (as would 68k and VAX, among others). ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Re: Enabling linux kernel jit compiler from dumpcap?, (continued)
- Re: Enabling linux kernel jit compiler from dumpcap? Bálint Réczey (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Anders Broman (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Jakub Zawadzki (Aug 22)
- Re: Enabling linux kernel jit compiler from dumpcap? Guy Harris (Aug 22)
- Re: Enabling linux kernel jit compiler from dumpcap? Jakub Zawadzki (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Guy Harris (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Réczey Bálint (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Réczey Bálint (Aug 23)
- Re: Enabling linux kernel jit compiler from dumpcap? Guy Harris (Aug 23)