ELSA-2022-9591 — Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8)

Summary

[5.15.0-0.30.20]
- floppy: use a statically allocated error counter (Willy Tarreau) [Orabug: 34218638] {CVE-2022-1652}
- x86: Disable RET on kexec (Konrad Rzeszutek Wilk) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: do not enable IBPB-on-entry when IBPB is not supported (Thadeu Lima de Souza Cascardo) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- arm64: proton-pack: provide vulnerability file value for RETBleed (James Morse) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/cpu/amd: Enumerate BTC_NO (Andrew Cooper) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/common: Stamp out the stepping madness (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- KVM: VMX: Prevent RSB underflow before vmenter (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Fill RSB on vmexit for IBRS (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- KVM: VMX: Fix IBRS handling after vmexit (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- KVM: VMX: Convert launched argument to flags (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- KVM: VMX: Flatten __vmx_vcpu_run() (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Remove x86_spec_ctrl_mask (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Fix SPEC_CTRL write on SMT state change (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Fix firmware entry SPEC_CTRL handling (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/cpu/amd: Add Spectral Chicken (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- objtool: Add entry UNRET validation (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Do IBPB fallback check only once (Josh Poimboeuf) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Add retbleed=ibpb (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/xen: Rename SYS* entry points (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- objtool: Update Retpoline validation (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- intel_idle: Disable IBRS during long idle (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Report Intel retbleed vulnerability (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation() (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS (Pawan Gupta) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Optimize SPEC_CTRL MSR writes (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/entry: Add kernel IBRS implementation (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Enable STIBP for JMP2RET (Kim Phillips) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Add AMD retbleed= boot parameter (Alexandre Chartre) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bugs: Report AMD retbleed vulnerability (Alexandre Chartre) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86: Add magic AMD return-thunk (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- objtool: Treat .text.__x86.* as noinstr (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86: Use return-thunk in asm code (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/sev: Avoid using __x86_return_thunk (Kim Phillips) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/vsyscall_emu/64: Don't use RET in vsyscall emulation (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/kvm: Fix SETcc emulation for return thunks (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/bpf: Use alternative RET encoding (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/ftrace: Use alternative RET encoding (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86,static_call: Use alternative RET encoding (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86,objtool: Create .return_sites (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86: Undo return-thunk damage (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/retpoline: Use -mfunction-return (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/retpoline: Swizzle retpoline thunk (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/retpoline: Cleanup some #ifdefery (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/cpufeatures: Move RETPOLINE flags to word 11 (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/kvm/vmx: Make noinstr clean (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/entry: Remove skip_r11rcx (Peter Zijlstra) [Orabug: 34335631] {CVE-2022-23816} {CVE-2022-29901}
- x86/entry: Fix register corruption in compat syscall (Josh Poimboeuf)

Fixed packages 2

Release	Package	Fixed in
Oracle Linux · 8	kernel-uek-container	0:5.15.0-0.30.20.el8
Oracle Linux · 8	kernel-uek-container-debug	0:5.15.0-0.30.20.el8

Vulnerabilities 3

Medium 5.6

CVE-2022-29901

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary…

Intel Intel Microprocessors linux-raspi2 linux-hwe Debian Ubuntu

Jul 12, 2022
Unscored —

CVE-2022-1652

Linux Kernel could allow a local attacker to execute arbitrary code on the system, caused by a concurrency use-after-fr…

linux-raspi2 linux-hwe linux-azure linux-riscv Debian Ubuntu Azure Linux

May 31, 2022
Unscored —

CVE-2022-23816 Rejected

DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none.

linux-hwe linux-azure linux-riscv linux-gcp Ubuntu Alpine

Jan 21, 2022

Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 8)

Summary

Fixed packages 2

Vulnerabilities 3

Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

Linux Kernel could allow a local attacker to execute arbitrary code on the system, caused by a concurrency use-after-fr…

DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate is unused by its CNA. Notes: none.