[SRU][B][D][Patch 0/2] Fix FP/VMX vulnerabilities - CVE-2019-15030 and CVE-2019-15031 (LP: 1843533)

[frank.heimes at canonical.com]

Buglink: https://bugs.launchpad.net/bugs/1843533

SRU Justification:

[Impact]

* Fix FP/VMX vulerabilities - CVE-2019-15030 and CVE-2019-15031

[Fix]

* a8318c13e79badb92bc6640704a64cc022a6eb97 a8318c1 "powerpc/tm: Fix restoring FP/VMX facility incorrectly on interrupts"

* 8205d5d98ef7f155de211f5e2eb6ca03d95a5a60 8205d5d "powerpc/tm: Fix FP/VMX unavailable exceptions inside a transaction"

[Test Case]

* the commits point to a simple test case in tools/testing/selftests/powerpc/tm/tm-poison.c

[Regression Potential] 

* The regression potential can be considered as moderate

[Other Info]

* a8318c1 fixes CVE-2019-15031

* 8205d5d fixes CVE-2019-15030

* the commits are in 5.3, hence already in Eoan

* simple cherry-pick (on bionic master-next with '--strategy=recursive -X theirs -s -e -x') could be done

Gustavo Romero (2):
  From: Gustavo Romero <gromero at linux.ibm.com>
  From: Gustavo Romero <gromero at linux.ibm.com>

 arch/powerpc/kernel/process.c | 26 ++++----------------------
 1 file changed, 4 insertions(+), 22 deletions(-)

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2.7.4