Comment 0 for bug 1853142

Hi,

Recently you would have been notified about CVE-2019-18660 via email to the linux-distros private mailing list. In short, it is a bug in the Spectre v2 class affecting powerpc.

We have developed some backports for supported Ubuntu kernels, and tested them in our lab. I will attach the patches shortly. Most of them should end up being identical to the versions in linux-stable, but the ones for Bionic are slightly different due to it using a 4.15 kernel.

Please get in touch with me or Michael Ellerman (powerpc maintainer) if you have any questions or if we can be of any assistance.

If I understand the SRU cycles correctly, we've missed the current one due for release on 2 December, so the earliest these patches could land in is the kernel nominally slated to be released ~23 December. Are you planning to still release a kernel then, or are your cycles going to change over the end of year period?

(If it helps, we've got some automation set up so we're able to do the regression testing of -proposed kernels with these patches quickly.)

Kind regards,
Daniel