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Message-ID: <14ad9b085cb3fb4b3a9fc091dde74540@metztli.com>
Date: Wed, 29 Jul 2026 17:15:46 -0700
From: Jose R Rodriguez <jose.r.r@...ztli.com>
To: oss-security@...ts.openwall.com
Cc: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
Subject: Re: Backports available - cBPF JIT spray hardening
On 2026-07-29 13:04, Pawan Gupta wrote:
> Hi All,
>
> This is an inform distro maintainers about recently upstreamed
> hardening
> against speculative execution attacks using BPF JIT spraying.
>
> The backports are available here:
>
> 6.1 -
> https://lore.kernel.org/all/20260727-cbpf-jit-spray-hardening-6-1-y-v1-0-eb80dcf1eb6e@linux.intel.com
> 6.6 -
> https://lore.kernel.org/all/20260717-cbpf-jit-spray-hardening-6-6-y-v1-0-e04f1b2893de@linux.intel.com
> 6.12 -
> https://lore.kernel.org/all/20260715-cbpf-jit-spray-hardening-6-12-y-v1-0-d8585a9aed80@linux.intel.com
> 6.18 -
> https://lore.kernel.org/all/20260713-cbpf-jit-spray-hardening-6-18-y-v1-0-755f60c55705@linux.intel.com
> 7.1 -
> https://lore.kernel.org/all/20260709-cbpf-jit-spray-hardening-7-1-y-v1-0-5ac5a2d6797f@linux.intel.com
>
> 6.1 backport is queued. Others are part of LTS kernels.
>
> 5.15 and older do not support pack allocator for BPF on which the
> hardening
> is based on. So the series is not directly applicable to 5.15 and
> older,
> and may need custom hardening patches.
Any patches out there for kernel 5.17.15? Thanks in advance!
>
> Please let me know if there are any questions.
>
> Thanks,
> Pawan
--
Best Professional Regards.
--
Jose R R
http://metztli.it
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