** Changed in: ubuntu-z-systems
       Status: Fix Committed => Fix Released

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भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs

  qeth: fix L3 next-hop im xmit qeth hdr

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released

Bug description:
  == SRU Justification ==
  The current code accesses rtable->rt_gateway without checking that rtable
  is a valid address. The accidental access to a lowcore area results in a
  random next-hop address in the qeth_hdr.  rtable (or more precisely,
  skb_dst(skb)) can be NULL in rare cases (for instance together with AF_PACKET 

  The solution is to add the missing NULL-ptr checks, which is done by
  commit ec2c6726322f.

  Commit ec2c6726322f is in mainline as of v4.13-rc5, so this fix is
  only needed in Xenial.

  == Fix ==
  ec2c6726322f ("s390/qeth: fix L3 next-hop in xmit qeth hdr")

  == Regression Potential ==
  Low.  Limited to s390.

  == Test Case ==
  A test kernel was built with this patch and tested by the original bug 
  The bug reporter states the test kernel resolved the bug.

  Upstream Commit:
  kernel 4.13

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