Bug 1777825 (CVE-2019-18660) - CVE-2019-18660 kernel: (powerpc) incomplete Spectre-RSB mitigation leads to information exposure
Summary: CVE-2019-18660 kernel: (powerpc) incomplete Spectre-RSB mitigation leads to i...
Status: NEW
Alias: CVE-2019-18660
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1777686 1777710 1778342 1777826
Blocks: 1777827
TreeView+ depends on / blocked
Reported: 2019-11-28 12:06 UTC by msiddiqu
Modified: 2020-01-14 11:21 UTC (History)
50 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed:

Attachments (Terms of Use)

Description msiddiqu 2019-11-28 12:06:13 UTC
The Linux kernel on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.

Upstream commit: 
  -> https://git.kernel.org/linus/39e72bf96f5847ba87cc5bd7a3ce0fed813dc9ad
  -> https://git.kernel.org/linus/af2e8c68b9c5403f77096969c516f742f5bb29e0

  -> https://www.openwall.com/lists/oss-security/2019/11/27/1

Comment 1 msiddiqu 2019-11-28 12:06:45 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1777826]

Note You need to log in before you can comment on or make changes to this bug.