In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Fix the definition of the fixmap area At the time being, the fixmap area is defined at the top of the address space or just below KASAN. This definition is not valid for PPC64. For PPC64, use the top of the I/O space. Because of circular dependencies, it is not possible to include asm/fixmap.h in asm/book3s/64/pgtable.h , so define a fixed size AREA at the top of the I/O space for fixmap and ensure during build that the size is big enough.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: powerpc/64: Fix the definition of the     fixmap area At the time being, the fixmap area is defined at the top of the address space or just below     KASAN. This definition is not valid for PPC64. For PPC64, use the top of the I/O space. Because of     circular dependencies, it is not possible to include asm/fixmap.h in asm/book3s/64/pgtable.h , so define a     fixed size AREA at the top of the I/O space for fixmap and ensure during build that the size is big     enough. (CVE-2021-47018)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:5101 advisory.

    * kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * (CVE-2023-28746)
    * (CVE-2023-52847)
    * (CVE-2021-47548)
    * (CVE-2024-36921)
    * (CVE-2024-26921)
    * (CVE-2021-47579)
    * (CVE-2024-36927)
    * (CVE-2024-39276)
    * (CVE-2024-33621)
    * (CVE-2024-27010)
    * (CVE-2024-26960)
    * (CVE-2024-38596)
    * (CVE-2022-48743)
    * (CVE-2024-26733)
    * (CVE-2024-26586)
    * (CVE-2024-26698)
    * (CVE-2023-52619)

    Bug Fix(es):

    * Rocky Linux8.6 - Spinlock statistics may show negative elapsed time and incorrectly formatted output     (JIRA:Rocky Linux-17678)

    * [AWS][8.9]There are call traces found when booting debug-kernel  for Amazon EC2 r8g.metal-24xl instance     (JIRA:Rocky Linux-23841)

    * [rhel8] gfs2: Fix glock shrinker (JIRA:Rocky Linux-32941)

    * lan78xx: Microchip LAN7800 never comes up after unplug and replug (JIRA:Rocky Linux-33437)

    * [Hyper-V][Rocky Linux-8.10.z] Update hv_netvsc driver to TOT (JIRA:Rocky Linux-39074)

    * Use-after-free on proc inode-i_sb triggered by fsnotify (JIRA:Rocky Linux-40167)

    * blk-cgroup: Properly propagate the iostat update up the hierarchy [rhel-8.10.z] (JIRA:Rocky Linux-40939)

    * (JIRA:Rocky Linux-31798)
    * (JIRA:Rocky Linux-10263)
    * (JIRA:Rocky Linux-40901)
    * (JIRA:Rocky Linux-43547)
    * (JIRA:Rocky Linux-34876)

    Enhancement(s):

    * [RFE] Add module parameters 'soft_reboot_cmd' and 'soft_active_on_boot' for customizing softdog     configuration (JIRA:Rocky Linux-19723)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:5101 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: powerpc: Fix access beyond end of drmem array (CVE-2023-52451)

    * kernel: efivarfs: force RO when remounting if SetVariable is not supported (CVE-2023-52463)

    * kernel: tracing: Restructure trace_clock_global() to never block (CVE-2021-46939)

    * kernel: ext4: avoid online resizing failures due to oversized flex bg (CVE-2023-52622)

    * kernel: net/sched: flower: Fix chain template offload (CVE-2024-26669)

    * kernel: stmmac: Clear variable when destroying workqueue (CVE-2024-26802)

    * kernel: efi: runtime: Fix potential overflow of soft-reserved region size (CVE-2024-26843)

    * kernel: quota: Fix potential NULL pointer dereference (CVE-2024-26878)

    * kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)

    * kernel: SUNRPC: fix a memleak in gss_import_v2_context (CVE-2023-52653)

    * kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by     untrusted application (CVE-2024-21823)

    * kernel: Revert net/mlx5: Block entering switchdev mode with ns inconsistency (CVE-2023-52658)

    * kernel: ext4: fix corruption during on-line resize (CVE-2024-35807)

    * kernel: x86/fpu: Keep xfd_state in sync with MSR_IA32_XFD (CVE-2024-35801)

    * kernel: dyndbg: fix old BUG_ON in >control parser (CVE-2024-35947)

    * kernel: net/sched: act_skbmod: prevent kernel-infoleak (CVE-2024-35893)

    * kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank() (CVE-2024-35876)

    * kernel: platform/x86: wmi: Fix opening of char device (CVE-2023-52864)

    * kernel: tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING (CVE-2023-52845)

    * (CVE-2023-28746)
    * (CVE-2023-52847)
    * (CVE-2021-47548)
    * (CVE-2024-36921)
    * (CVE-2024-26921)
    * (CVE-2021-47579)
    * (CVE-2024-36927)
    * (CVE-2024-39276)
    * (CVE-2024-33621)
    * (CVE-2024-27010)
    * (CVE-2024-26960)
    * (CVE-2024-38596)
    * (CVE-2022-48743)
    * (CVE-2024-26733)
    * (CVE-2024-26586)
    * (CVE-2024-26698)
    * (CVE-2023-52619)

    Bug Fix(es):

    * RHEL8.6 - Spinlock statistics may show negative elapsed time and incorrectly formatted output     (JIRA:RHEL-17678)

    * [AWS][8.9]There are call traces found when booting debug-kernel  for Amazon EC2 r8g.metal-24xl instance     (JIRA:RHEL-23841)

    * [rhel8] gfs2: Fix glock shrinker (JIRA:RHEL-32941)

    * lan78xx: Microchip LAN7800 never comes up after unplug and replug (JIRA:RHEL-33437)

    * [Hyper-V][RHEL-8.10.z] Update hv_netvsc driver to TOT (JIRA:RHEL-39074)

    * Use-after-free on proc inode-i_sb triggered by fsnotify (JIRA:RHEL-40167)

    * blk-cgroup: Properly propagate the iostat update up the hierarchy [rhel-8.10.z] (JIRA:RHEL-40939)

    * (JIRA:RHEL-31798)
    * (JIRA:RHEL-10263)
    * (JIRA:RHEL-40901)
    * (JIRA:RHEL-43547)
    * (JIRA:RHEL-34876)

    Enhancement(s):

    * [RFE] Add module parameters 'soft_reboot_cmd' and 'soft_active_on_boot' for customizing softdog     configuration (JIRA:RHEL-19723)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
246251	Linux Distros Unpatched Vulnerability : CVE-2021-47018	Nessus	Misc.	medium
206056	RockyLinux 8 : kernel (RLSA-2024:5101)	Nessus	Rocky Linux Local Security Checks	high
205332	Oracle Linux 8 : kernel (ELSA-2024-5101)	Nessus	Oracle Linux Local Security Checks	high
205214	RHEL 8 : kernel (RHSA-2024:5101)	Nessus	Red Hat Local Security Checks	high

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