ALAS-2023-430

An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege escalation). This depends on a race condition through which userspace can replace an instruction before the #VC handler reads it. (CVE-2023-46813)

An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur. (CVE-2023-46862)

x86: KVM: SVM: always update the x2avic msr interception (CVE-2023-5090)

A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf) component can be exploited to achieve local privilege escalation.

If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it can increment or write to memory locations outside of the allocated buffer.

We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06. (CVE-2023-5717)

aarch64:
    perf-debuginfo-6.1.61-85.141.amzn2023.aarch64
    kernel-livepatch-6.1.61-85.141-1.0-0.amzn2023.aarch64
    kernel-tools-debuginfo-6.1.61-85.141.amzn2023.aarch64
    bpftool-debuginfo-6.1.61-85.141.amzn2023.aarch64
    bpftool-6.1.61-85.141.amzn2023.aarch64
    kernel-tools-6.1.61-85.141.amzn2023.aarch64
    python3-perf-debuginfo-6.1.61-85.141.amzn2023.aarch64
    perf-6.1.61-85.141.amzn2023.aarch64
    python3-perf-6.1.61-85.141.amzn2023.aarch64
    kernel-libbpf-devel-6.1.61-85.141.amzn2023.aarch64
    kernel-libbpf-6.1.61-85.141.amzn2023.aarch64
    kernel-tools-devel-6.1.61-85.141.amzn2023.aarch64
    kernel-libbpf-static-6.1.61-85.141.amzn2023.aarch64
    kernel-modules-extra-6.1.61-85.141.amzn2023.aarch64
    kernel-debuginfo-6.1.61-85.141.amzn2023.aarch64
    kernel-headers-6.1.61-85.141.amzn2023.aarch64
    kernel-6.1.61-85.141.amzn2023.aarch64
    kernel-debuginfo-common-aarch64-6.1.61-85.141.amzn2023.aarch64
    kernel-devel-6.1.61-85.141.amzn2023.aarch64

src:
    kernel-6.1.61-85.141.amzn2023.src

x86_64:
    python3-perf-debuginfo-6.1.61-85.141.amzn2023.x86_64
    kernel-livepatch-6.1.61-85.141-1.0-0.amzn2023.x86_64
    kernel-tools-debuginfo-6.1.61-85.141.amzn2023.x86_64
    kernel-libbpf-6.1.61-85.141.amzn2023.x86_64
    bpftool-debuginfo-6.1.61-85.141.amzn2023.x86_64
    kernel-modules-extra-6.1.61-85.141.amzn2023.x86_64
    kernel-libbpf-devel-6.1.61-85.141.amzn2023.x86_64
    kernel-tools-6.1.61-85.141.amzn2023.x86_64
    kernel-tools-devel-6.1.61-85.141.amzn2023.x86_64
    perf-debuginfo-6.1.61-85.141.amzn2023.x86_64
    kernel-libbpf-static-6.1.61-85.141.amzn2023.x86_64
    perf-6.1.61-85.141.amzn2023.x86_64
    python3-perf-6.1.61-85.141.amzn2023.x86_64
    bpftool-6.1.61-85.141.amzn2023.x86_64
    kernel-headers-6.1.61-85.141.amzn2023.x86_64
    kernel-debuginfo-6.1.61-85.141.amzn2023.x86_64
    kernel-6.1.61-85.141.amzn2023.x86_64
    kernel-debuginfo-common-x86_64-6.1.61-85.141.amzn2023.x86_64
    kernel-devel-6.1.61-85.141.amzn2023.x86_64

2024-01-03: CVE-2023-46862 was added to this advisory.