* Bionic update: upstream stable patchset 2022-12-01 (LP: #1998542) //
CVE-2022-26373
- x86/speculation: Add RSB VM Exit protections
* Bionic update: upstream stable patchset 2022-12-01 (LP: #1998542)
- Revert "x86/cpu: Add a steppings field to struct x86_cpu_id"
- x86/cpufeature: Add facility to check for min microcode revisions
- x86/cpufeature: Fix various quality problems in the
header
- x86/devicetable: Move x86 specific macro out of generic code
- x86/cpu: Add consistent CPU match macros
- x86/cpu: Add a steppings field to struct x86_cpu_id
- x86/cpufeatures: Move RETPOLINE flags to word 11
- x86/bugs: Report AMD retbleed vulnerability
- x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value
- x86/entry: Add kernel IBRS implementation
- x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS
- x86/speculation: Add LFENCE to RSB fill sequence
- KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS
- x86/speculation: Fill RSB on vmexit for IBRS
- x86/cpu/amd: Enumerate BTC_NO
- x86/speculation: Disable RRSBA behavior
- x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts
* Bionic update: upstream stable patchset 2022-12-01 (LP: #1998542) //
CVE-2022-29901
- x86/bugs: Optimize SPEC_CTRL MSR writes
- x86/bugs: Split spectre_v2_select_mitigation() and
spectre_v2_user_select_mitigation()
- x86/bugs: Report Intel retbleed vulnerability
- entel_idle: Disable IBRS during long idle
- x86/speculation: Change FILL_RETURN_BUFFER to work with objtool
- x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n
- x86/speculation: Fix firmware entry SPEC_CTRL handling
- x86/speculation: Fix SPEC_CTRL write on SMT state change
- x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit
- x86/speculation: Remove x86_spec_ctrl_mask
- x86/common: Stamp out the stepping madness
- x86/bugs: Add Cannon lake to RETBleed affected CPU list
- x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current
* Bionic update: upstream stable patchset 2022-12-01 (LP: #1998542) //
CVE-2022-29900
- x86/bugs: Add AMD retbleed= boot parameter
* Bionic update: upstream stable patchset 2022-10-06 (LP: #1992112)
- x86/bugs: Add "unknown" reporting for MMIO Stale Data
* CVE-2021-26401
- x86/speculation: Warn about Spectre v2 LFENCE mitigation
- x86/speculation: Warn about eIBRS + LFENCE + Unprivileged eBPF + SMT
* CVE-2022-0001
- x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation
reporting
* Bionic update: upstream stable patchset 2019-10-07 (LP: #1847155)
- x86/cpu: Add Tiger Lake to Intel family
* CVE-url: https://ubuntu.com/security/CVE-2023-4622
- af_unix: Fix null-ptr-deref in unix_stream_sendpage().
* CVE-url: https://ubuntu.com/security/CVE-2022-45919
- media: dvb-core: Fix use-after-free due to race condition at dvb_ca_en50221
* Miscellaneous upstream changes
- Revert "x86/enter: Use IBRS on syscall and interrupts"