[Bionic][SRU][PATCH 0/1] Fix for CVE-2018-18445

Po-Hsu Lin po-hsu.lin at canonical.com
Fri Nov 23 03:46:53 UTC 2018


This patch fixes the emulatation of the 32-bit right shift operation
for 64-bit arithmetic by truncating the inputs for 32-bit ops to 32
bits before those arithmetic logic units instead.

This patch can be cherry-picked for both Bionic, which is the only
release that marked with needed on the U-C-T.

Jann Horn (1):
  bpf: 32-bit RSH verification must truncate input before the ALU op

 kernel/bpf/verifier.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

-- 
2.17.1




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