4.13.0-31-generic boots for me and behaves as expected (no issues) However, variant one is still active:
Spectre and Meltdown mitigation detection tool v0.31 Checking for vulnerabilities against running kernel Linux 4.13.0-31-generic #34~16.04.1-Ubuntu SMP Fri Jan 19 17:11:01 UTC 2018 x86_64 CPU is Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz CVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1' * Checking count of LFENCE opcodes in kernel: YES > STATUS: NOT VULNERABLE (114 opcodes found, which is >= 70, heuristic to be > improved when official patches become available) CVE-2017-5715 [branch target injection] aka 'Spectre Variant 2' * Mitigation 1 * Hardware (CPU microcode) support for mitigation * The SPEC_CTRL MSR is available: NO * The SPEC_CTRL CPUID feature bit is set: NO * Kernel support for IBRS: YES * IBRS enabled for Kernel space: NO * IBRS enabled for User space: NO * Mitigation 2 * Kernel compiled with retpoline option: NO * Kernel compiled with a retpoline-aware compiler: NO > STATUS: VULNERABLE (IBRS hardware + kernel support OR kernel with retpoline > are needed to mitigate the vulnerability) CVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3' * Kernel supports Page Table Isolation (PTI): YES * PTI enabled and active: YES * Checking if we're running under Xen PV (64 bits): NO > STATUS: NOT VULNERABLE (PTI mitigates the vulnerability) A false sense of security is worse than no security at all, see --disclaimer ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5753 ** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5754 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743100 Title: Spectre Kernel will not boot (4.13.0-29-generic) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1743100/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
