An update of the linux package has been released.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:8267 advisory.

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

    Security Fix(es):

    * off-path attacker may inject data or terminate victim's TCP session (CVE-2020-36516)

    * use-after-free vulnerability in function sco_sock_sendmsg() (CVE-2021-3640)

    * smb2_ioctl_query_info NULL pointer dereference (CVE-2022-0168)

    * NULL pointer dereference in udf_expand_file_adinicbdue() during writeback (CVE-2022-0617)

    * swiotlb information leak with DMA_FROM_DEVICE (CVE-2022-0854)

    * uninitialized registers on stack in nft_do_chain can cause kernel pointer leakage to UM (CVE-2022-1016)

    * race condition in snd_pcm_hw_free leading to use-after-free (CVE-2022-1048)

    * use-after-free and memory errors in ext4 when mounting and operating on a corrupted image     (CVE-2022-1184)

    * concurrency use-after-free between drm_setmaster_ioctl and drm_mode_getresources (CVE-2022-1280)

    * kernel info leak issue in pfkey_register (CVE-2022-1353)

    * use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)

    * NULL pointer dereference in x86_emulate_insn may lead to DoS (CVE-2022-1852)

    * fanotify misuses fd_install() which could lead to use-after-free (CVE-2022-1998)

    * nf_tables cross-table potential use-after-free may lead to local privilege escalation (CVE-2022-2586)

    * integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)

    * slab-out-of-bounds access in packet_recvmsg() (CVE-2022-20368)

    * incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)

    * incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)

    * incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)

    * possible to use the debugger to write zero into a location of choice (CVE-2022-21499)

    * AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816,     CVE-2022-29900)

    * AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)

    * Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

    * double free in ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c (CVE-2022-28390)

    * use after free in SUNRPC subsystem (CVE-2022-28893)

    * use-after-free due to improper update of reference count in net/sched/cls_u32.c (CVE-2022-29581)

    * Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

    * DoS in nfqnl_mangle in net/netfilter/nfnetlink_queue.c (CVE-2022-36946)

    * nf_tables disallow binding to already bound chain (CVE-2022-39190)

    * nfs_atomic_open() returns uninitialized data instead of ENOTDIR (CVE-2022-24448)

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

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.1 Release Notes     linked from 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.

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: XArray: Fix xas_create_range() when     multi-order entry present If there is already an entry present that is of order >= XA_CHUNK_SHIFT when we     call xas_create_range(), xas_create_range() will misinterpret that entry as a node and dereference     xa_node->parent, generally leading to a crash that looks something like this: general protection fault,     probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref     in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 32 Comm: khugepaged Not tainted     5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0 RIP: 0010:xa_parent_locked include/linux/xarray.h:1207     [inline] RIP: 0010:xas_create_range+0x2d9/0x6e0 lib/xarray.c:725 It's deterministically reproducable once     you know what the problem is, but producing it in a live kernel requires khugepaged to hit a race. While     the problem has been present since xas_create_range() was introduced, I'm not aware of a way to hit it     before the page cache was converted to use multi-index entries. (CVE-2022-49152)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-987306 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    XArray: Fix xas_create_range() when multi-order entry present

    If there is already an entry present that is of order >= XA_CHUNK_SHIFT     when we call xas_create_range(), xas_create_range() will misinterpret     that entry as a node and dereference xa_node->parent, generally leading     to a crash that looks something like this:

    general protection fault, probably for non-canonical address 0xdffffc0000000001:
    0000 [#1] PREEMPT SMP KASAN     KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]     CPU: 0 PID: 32 Comm: khugepaged Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0     RIP: 0010:xa_parent_locked include/linux/xarray.h:1207 [inline]     RIP: 0010:xas_create_range+0x2d9/0x6e0 lib/xarray.c:725

    It's deterministically reproducable once you know what the problem is,     but producing it in a live kernel requires khugepaged to hit a race.
    While the problem has been present since xas_create_range() was     introduced, I'm not aware of a way to hit it before the page cache was     converted to use multi-index entries.

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-988750 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    XArray: Fix xas_create_range() when multi-order entry present

    If there is already an entry present that is of order >= XA_CHUNK_SHIFT     when we call xas_create_range(), xas_create_range() will misinterpret     that entry as a node and dereference xa_node->parent, generally leading     to a crash that looks something like this:

    general protection fault, probably for non-canonical address 0xdffffc0000000001:
    0000 [#1] PREEMPT SMP KASAN     KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]     CPU: 0 PID: 32 Comm: khugepaged Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0     RIP: 0010:xa_parent_locked include/linux/xarray.h:1207 [inline]     RIP: 0010:xas_create_range+0x2d9/0x6e0 lib/xarray.c:725

    It's deterministically reproducable once you know what the problem is,     but producing it in a live kernel requires khugepaged to hit a race.
    While the problem has been present since xas_create_range() was     introduced, I'm not aware of a way to hit it before the page cache was     converted to use multi-index entries.

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

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

ID	Name	Product	Family	Published	Updated	Severity
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	7/22/2021	3/23/2026	high
167620	RHEL 9 : kernel (RHSA-2022:8267)	Nessus	Red Hat Local Security Checks	11/16/2022	9/12/2025	high
249025	Linux Distros Unpatched Vulnerability : CVE-2022-49152	Nessus	Misc.	8/12/2025	9/1/2025	medium
268083	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987306)	Nessus	Unity Linux Local Security Checks	10/7/2025	10/15/2025	medium
273426	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988750)	Nessus	Unity Linux Local Security Checks	11/5/2025	11/5/2025	medium

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