リモートの Ubuntu 16.04 LTS ホストには、USN-4681-1のアドバイザリに記載された複数の脆弱性の影響を受けるパッケージがインストールされています。

  - 7.0以前のIntel(R) Ethernet 700 Series Controllersバージョン用i40eドライバーのリソース漏洩により、認証されたユーザーが、ローカルアクセスを介してサービス拒否を可能にする可能性があります。（CVE-2019-0148）

  - Linux カーネルに欠陥が見つかりました。コンソールサブシステムが ioctl の KDGKBSENT および KDSKBSENT を使用する方法に、メモリ解放後使用 (Use-After-Free) が見つかりました。ローカルユーザーがこの欠陥を利用して、領域外読み取りメモリアクセスを取得する可能性があります。この脆弱性による主な脅威は、データの機密性に関するものです。(CVE-2020-25656)

  - グローバル変数 fg_console へのアクセスが適切に同期されておらず、con_font_op でメモリ解放後使用 (Use After Free) を引き起こすため、Linux カーネルに欠陥が見つかりました。(CVE-2020-25668)

  - 4.14.xまでのXenで使用されている5.9.1までのLinux カーネルに、問題が発見されました。
    drivers/xen/events/events_base.cを使用すると、イベント処理ループ (競合状態) 中にイベントチャネルを削除することが可能です。このため、再構成中の準仮想化デバイス（別名：CID-073d0552ead5）のイベントを介したdom0クラッシュなど、メモリ解放後使用（Use-After-Free）またはNULLポインターデリファレンスを引き起こす可能性があります。（CVE-2020-27675）

  - ローカルの攻撃者が5.9.7以前のLinuxカーネルのfbconにおけるスラブ領域外書き込みを使用して、特権情報を読み取るか、カーネル（別名：CID-3c4e0dff2095）のクラッシュを引き起こす可能性があります。これは、drivers/tty/vt/vt.cのKD_FONT_OP_COPYをフォントの高さなどの操作に使用できるために発生します。(CVE-2020-28974) 

  --IBM Power9 (AIX、7.17.2、およびVIOS 3.1) プロセッサーを使用すると、ローカルユーザーが、酌量すべき状況下でL1キャッシュ内のデータから機密情報を取得する可能性があります。IBM X-Force ID: 189296.
    (CVE-2020-4788)

Nessus はこれらの問題をテストしておらず、代わりにアプリケーションが自己報告するバージョン番号にのみ依存していることに注意してください。

According to the versions of the kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - Resource leak in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before 2.8.43 may allow     an authenticated user to potentially enable a denial of service via local access. (CVE-2019-0146)

  - Resource leak in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before 7.0 may allow an     authenticated user to potentially enable a denial of service via local access. (CVE-2019-0148)

  - Insufficient input validation in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before     2.8.43 may allow an authenticated user to potentially enable a denial of service via local access.
    (CVE-2019-0149)

  - A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of     ttys could lead to a use-after-free. (CVE-2020-36557)

  - A race condition in the Linux kernel before 5.5.7 involving VT_RESIZEX could lead to a NULL pointer     dereference and general protection fault. (CVE-2020-36558)

  - Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an     authenticated user to potentially enable denial of service via local access. (CVE-2021-33061)

  - When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of     bounds. (CVE-2021-33655)

  - When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
    (CVE-2021-33656)

  - An information leak flaw was found in NFS over RDMA in the net/sunrpc/xprtrdma/rpc_rdma.c in the Linux     Kernel. This flaw allows an attacker with normal user privileges to leak kernel information.
    (CVE-2022-0812)

  - A vulnerability was found in linux kernel, where an information leak occurs via ext4_extent_header to     userspace. (CVE-2022-0850)

  - A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel's filesystem sub-     component. This flaw allows a local attacker with a user privilege to cause a denial of service.
    (CVE-2022-1184)

  - An out-of-bounds read flaw was found in the Linux kernel's TeleTYpe subsystem. The issue occurs in how a     user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage     of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read     unauthorized random data from memory. (CVE-2022-1462)

  - In lock_sock_nested of sock.c, there is a possible use after free due to a race condition. This could lead     to local escalation of privilege with System execution privileges needed. User interaction is not needed     for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-174846563References: Upstream     kernel (CVE-2022-20154)

  - In various methods of kernel base drivers, there is a possible out of bounds write due to a heap buffer     overflow. This could lead to local escalation of privilege with System execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-182388481References: Upstream kernel (CVE-2022-20166)

  - Product: AndroidVersions: Android kernelAndroid ID: A-224546354References: Upstream kernel     (CVE-2022-20368)

  - In verity_target of dm-verity-target.c, there is a possible way to modify read-only files due to a missing     permission check. This could lead to local escalation of privilege with System execution privileges     needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid     ID: A-234475629References: Upstream kernel (CVE-2022-20572)

  - Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to     restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently     allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass     verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and     unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for     peripherals that do not verify firmware updates. We recommend upgrading past commit     4caae58406f8ceb741603eee460d79bacca9b1b5 (CVE-2022-2503)

  - It was discovered that a nft object or expression could reference a nft set on a different nft table,     leading to a use-after-free once that table was deleted. (CVE-2022-2586)

  - It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old     filter from the hashtable before freeing it if its handle had the value 0. (CVE-2022-2588)

  - An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of     actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size()     function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This     flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-2639)

  - An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and     incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted     IRC with nf_conntrack_irc configured. (CVE-2022-2663)

  - A flaw was found in the Linux kernel's driver for the ASIX AX88179_178A-based USB 2.0/3.0 Gigabit Ethernet     Devices. The vulnerability contains multiple out-of-bounds reads and possible out-of-bounds writes.
    (CVE-2022-2964)

  - A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices. On a system where     virtualized TPM devices are configured (this is not the default) a local attacker can create a use-after-     free and create a situation where it may be possible to escalate privileges on the system. (CVE-2022-2977)

  - A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)     when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to     potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read     and copying it into a socket. (CVE-2022-3028)

  - An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init     (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different     vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an     unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data     in net/netfilter/nf_tables_api.c. (CVE-2022-34918)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to     memory leak. The attack can be launched remotely. It is recommended to apply a patch to fix this issue.
    The identifier VDB-211021 was assigned to this vulnerability. (CVE-2022-3524)

  - Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn     by its CNA. Further investigation showed that it was not a security issue. Notes: none. (CVE-2022-3542)

  - A vulnerability has been found in Linux Kernel and classified as critical. Affected by this vulnerability     is the function area_cache_get of the file drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c of the     component IPsec. The manipulation leads to use after free. It is recommended to apply a patch to fix this     issue. The identifier VDB-211045 was assigned to this vulnerability. (CVE-2022-3545)

  - A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue     is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier     of this vulnerability is VDB-211088. (CVE-2022-3565)

  - A vulnerability, which was classified as problematic, was found in Linux Kernel. This affects the function     tcp_getsockopt/tcp_setsockopt of the component TCP Handler. The manipulation leads to race condition. It     is recommended to apply a patch to fix this issue. The identifier VDB-211089 was assigned to this     vulnerability. (CVE-2022-3566)

  - A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects     the function inet6_stream_ops/inet6_dgram_ops of the component IPv6 Handler. The manipulation leads to     race condition. It is recommended to apply a patch to fix this issue. VDB-211090 is the identifier     assigned to this vulnerability. (CVE-2022-3567)

  - A flaw was found in the Linux kernel's networking code. A use-after-free was found in the way the sch_sfb     enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed)     into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of     service. (CVE-2022-3586)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The     manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to     apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. This vulnerability affects     the function vsock_connect of the file net/vmw_vsock/af_vsock.c. The manipulation leads to memory leak.
    The complexity of an attack is rather high. The exploitation appears to be difficult. It is recommended to     apply a patch to fix this issue. VDB-211930 is the identifier assigned to this vulnerability.
    (CVE-2022-3629)

  - An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in     net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)

  - nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote     attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte     nfta_payload attribute, an skb_pull can encounter a negative skb->len. (CVE-2022-36946)

  - An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race     condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale     TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)

  - A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing     sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw     to potentially crash the system causing a denial of service. (CVE-2022-4129)

  - roccat_report_event in drivers/hid/hid-roccat.c in the Linux kernel through 5.19.12 has a race condition     and resultant use-after-free in certain situations where a report is received while copying a     report->value is in progress. (CVE-2022-41850)

  - A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in     progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to     crash the system or leak internal kernel information. (CVE-2022-41858)

  - mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
    (CVE-2022-42703)

  - drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-     space client to corrupt the monitor's internal memory. (CVE-2022-43750)

  - A flaw incorrect access control in the Linux kernel USB core subsystem was found in the way user attaches     usb device. A local user could use this flaw to crash the system. (CVE-2022-4662)

  - In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows     an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control     configuration that is set up with 'tc qdisc' and 'tc class' commands. This affects qdisc_graft in     net/sched/sch_api.c. (CVE-2022-47929)

  - A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network     subcomponent in the Linux kernel. This flaw causes the system to crash. (CVE-2023-0394)

  - cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes     indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)

  - atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition     rather than valid classification results). (CVE-2023-23455)

  - A vulnerability classified as critical was found in Linux Kernel (Operating System) (affected version     unknown). Affected by this vulnerability is some unknown processing of the component Cache Handler. There     is no information about possible countermeasures known. It may be suggested to replace the affected object     with an alternative product. (CVE-2022-20565)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - Intel (R) Ethernet 700 系列控制器 7.0 之前版本的 i40e 驅動程式中存在資源洩漏問題，經驗證的使用者可能會透過本機存取造成拒絕服務。(CVE-2019-0148)

請注意，Nessus 依賴供應商報告的套件存在。

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

  - Resource leak in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before 7.0 may allow an     authenticated user to potentially enable a denial of service via local access. (CVE-2019-0148)

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

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 7.0 之前的 Intel(R) Ethernet 700 系列控制器版本的 i40e 驱动程序中存在资源泄漏漏洞，该漏洞可能允许经过身份验证的用户通过本地访问造成拒绝服务。(CVE-2019-0148)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4681-1 advisory.

    Ryan Hall discovered that the Intel 700 Series Ethernet Controllers driver in the Linux kernel did not     properly deallocate memory in some conditions. A local attacker could use this to cause a denial of     service (kernel memory exhaustion). (CVE-2019-0148)

    It was discovered that the console keyboard driver in the Linux kernel contained a race condition. A local     attacker could use this to expose sensitive information (kernel memory). (CVE-2020-25656)

    Minh Yuan discovered that the tty driver in the Linux kernel contained race conditions when handling     fonts. A local attacker could possibly use this to expose sensitive information (kernel memory).
    (CVE-2020-25668)

    Jinoh Kang discovered that the Xen event channel infrastructure in the Linux kernel contained a race     condition. An attacker in guest could possibly use this to cause a denial of service (dom0 crash).
    (CVE-2020-27675)

    Minh Yuan discovered that the framebuffer console driver in the Linux kernel did not properly handle fonts     in some conditions. A local attacker could use this to cause a denial of service (system crash) or     possibly expose sensitive information (kernel memory). (CVE-2020-28974)

    It was discovered that Power 9 processors could be coerced to expose information from the L1 cache in     certain situations. A local attacker could use this to expose sensitive information. (CVE-2020-4788)

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

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

According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Resource leak in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before 2.8.43 may allow     an authenticated user to potentially enable a denial of service via local access. (CVE-2019-0146)

  - Resource leak in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before 7.0 may allow an     authenticated user to potentially enable a denial of service via local access. (CVE-2019-0148)

  - Insufficient input validation in i40e driver for Intel(R) Ethernet 700 Series Controllers versions before     2.8.43 may allow an authenticated user to potentially enable a denial of service via local access.
    (CVE-2019-0149)

  - Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an     authenticated user to potentially enable denial of service via local access. (CVE-2021-33061)

  - A vulnerability was found in linux kernel, where an information leak occurs via ext4_extent_header to     userspace. (CVE-2022-0850)

  - An out-of-bounds read flaw was found in the Linux kernel's TeleTYpe subsystem. The issue occurs in how a     user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage     of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read     unauthorized random data from memory. (CVE-2022-1462)

  - An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and     incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted     IRC with nf_conntrack_irc configured. (CVE-2022-2663)

  - A flaw was found in the Linux kernel's driver for the ASIX AX88179_178A-based USB 2.0/3.0 Gigabit Ethernet     Devices. The vulnerability contains multiple out-of-bounds reads and possible out-of-bounds writes.
    (CVE-2022-2964)

  - A flaw was found in the Linux kernel implementation of proxied virtualized TPM devices. On a system where     virtualized TPM devices are configured (this is not the default) a local attacker can create a use-after-     free and create a situation where it may be possible to escalate privileges on the system. (CVE-2022-2977)

  - A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)     when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to     potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read     and copying it into a socket. (CVE-2022-3028)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to     memory leak. The attack can be launched remotely. It is recommended to apply a patch to fix this issue.
    The identifier VDB-211021 was assigned to this vulnerability. (CVE-2022-3524)

  - A vulnerability classified as problematic was found in Linux Kernel. This vulnerability affects the     function bnx2x_tpa_stop of the file drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c of the component BPF.
    The manipulation leads to memory leak. It is recommended to apply a patch to fix this issue. VDB-211042 is     the identifier assigned to this vulnerability. (CVE-2022-3542)

  - A vulnerability has been found in Linux Kernel and classified as critical. Affected by this vulnerability     is the function area_cache_get of the file drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c of the     component IPsec. The manipulation leads to use after free. It is recommended to apply a patch to fix this     issue. The identifier VDB-211045 was assigned to this vulnerability. (CVE-2022-3545)

  - A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue     is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The     manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier     of this vulnerability is VDB-211088. (CVE-2022-3565)

  - A flaw was found in the Linux kernel's networking code. A use-after-free was found in the way the sch_sfb     enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed)     into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of     service. (CVE-2022-3586)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this     vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The     manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to     apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

  - An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race     condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale     TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)

  - roccat_report_event in drivers/hid/hid-roccat.c in the Linux kernel through 5.19.12 has a race condition     and resultant use-after-free in certain situations where a report is received while copying a     report->value is in progress. (CVE-2022-41850)

  - mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
    (CVE-2022-42703)

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

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - 7.0以前のIntel(R) Ethernet 700 Series Controllersバージョン用i40eドライバーのリソース漏洩により、認証されたユーザーが、ローカルアクセスを介してサービス拒否を可能にする可能性があります。（CVE-2019-0148）

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

远程 Ubuntu 16.04 LTS 主机上安装的一个程序包受到 USN-4681-1 公告中提及的多个漏洞影响。

  - 7.0 之前的 Intel(R) Ethernet 700 系列控制器版本的 i40e 驱动程序中存在资源泄漏漏洞，该漏洞可能允许经过身份验证的用户通过本地访问造成拒绝服务。(CVE-2019-0148)

  - Linux 内核中发现缺陷。发现控制台子系统使用 ioctls KDGKBSENT 和 KDSKBSENT 的方式中存在释放后使用问题。本地用户可以利用这个缺陷使读取内存访问越界。此漏洞最主要的威胁对象是数据机密性。(CVE-2020-25656)

  - 在 Linux 内核中发现一个缺陷，这是未正确同步全局变量 fg_console 的访问，进而导致 con_font_op 中发生释放后使用所致。(CVE-2020-25668)

  - 在直至 5.9.1 的 Linux 内核中发现了一个问题，正如与直至 4.14.x 的 Xen 一起使用一样。
    drivers/xen/events/events_base.c 允许在事件处理循环期间删除事件通道（争用条件）。这样可造成释放后使用或空指针取消引用，即 CID-073d0552ead5，通过重配置半虚拟化设备事件的 dom0 崩溃即是一例。(CVE-2020-27675)

  - 在低于 5.9.7 版本的 Linux 内核中，fbcon 中的 slab-out-of-bounds 读取可能会被本地攻击者用来读取特权信息或可能使内核（即 CID-3c4e0dff2095）崩溃。这种情况会发生是因为 drivers/tty/vt/vt.c 中的 KD_FONT_OP_COPY 可用于字体高度等操作。(CVE-2020-28974)

  - IBM Power9 (AIX 7.1、7.2 和 VIOS 3.1) 处理器可允许本地用户在适当情况下从 L1 缓存中的数据获取敏感信息。IBM X-Force ID：189296。
    (CVE-2020-4788)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

遠端 Ubuntu 16.04 LTS 主機上安裝的一個套件受到 USN-4681-1 公告中所提及的多個弱點影響。

  - Intel (R) Ethernet 700 系列控制器 7.0 之前版本的 i40e 驅動程式中存在資源洩漏問題，經驗證的使用者可能會透過本機存取造成拒絕服務。(CVE-2019-0148)

  - 在 Linux 核心中發現一個缺陷。在主控台子系統使用 ioctls KDGKBSENT 和 KDSKBSENT 的方式中發現釋放後使用缺陷。本機使用者可利用此缺陷，取得超出邊界的記憶體讀取存取權。此弱點對資料機密性的威脅最大。(CVE-2020-25656)

  - 在 Linux 核心中發現一個缺陷，這是因為未正確同步處理全域變數 fg_console 的存取權，進而導致 con_font_op 中發生釋放後使用所致。(CVE-2020-25668)

  - 在 5.9.1 及之前版本的 Linux 核心 (搭配 Xen 4.14.x 及之前版本使用) 中發現一個問題。
    drivers/xen/events/events_base.c 允許在事件處理迴圈 (爭用情形) 期間移除事件通道。此問題可造成釋放後使用或 NULL 指標解除參照，透過 in-reconfiguration 半虛擬化裝置的事件造成 dom0 損毀即為一例 (即 CID-073d0552ead5)。(CVE-2020-27675)

  - 在 5.9.7 之前版本的 Linux 核心內，fbcon 中存在平台超出邊界讀取問題，本機攻擊者可利用此問題讀取有權限的資訊，或可能損毀核心，即 CID-3c4e0dff2095。這是 drivers/tty/vt/vt.c 中的 KD_FONT_OP_COPY 可用於字型高度等操控所致。(CVE-2020-28974)

  - IBM Power9 (AIX 7.1、7.2 和 VIOS 3.1) 處理器可允許本機使用者在有弱點的情況下，從 L1 快取中的資料取得敏感資訊。IBM X-Force ID：189296。
    (CVE-2020-4788)

請注意，Nessus 並未測試這些問題，而是僅依據應用程式自我報告的版本號碼作出判斷。

ID	Name	Product	Family	Published	Updated	Severity
144752	Ubuntu 16.04 LTS : Linux カーネル脆弱性 (USN-4681-1)	Nessus	Ubuntu Local Security Checks	1/6/2021	8/27/2024	high
177184	EulerOS Virtualization 3.0.6.0 : kernel (EulerOS-SA-2023-2252)	Nessus	Huawei Local Security Checks	6/13/2023	6/26/2024	high
244165	Linux Distros 未修補的弱點：CVE-2019-0148	Nessus	Misc.	8/6/2025	9/2/2025	medium
244165	Linux Distros Unpatched Vulnerability : CVE-2019-0148	Nessus	Misc.	8/6/2025	9/2/2025	medium
244165	Linux Distros 未修补的漏洞：CVE-2019-0148	Nessus	Misc.	8/6/2025	9/2/2025	medium
144752	Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4681-1)	Nessus	Ubuntu Local Security Checks	1/6/2021	8/27/2024	high
168510	EulerOS 2.0 SP8 : kernel (EulerOS-SA-2022-2796)	Nessus	Huawei Local Security Checks	12/8/2022	6/26/2024	high
244165	Linux Distros のパッチ未適用の脆弱性: CVE-2019-0148	Nessus	Misc.	8/6/2025	9/2/2025	medium
144752	Ubuntu 16.04 LTS：Linux 内核漏洞 (USN-4681-1)	Nessus	Ubuntu Local Security Checks	1/6/2021	8/27/2024	high
144752	Ubuntu 16.04 LTS：Linux 核心弱點 (USN-4681-1)	Nessus	Ubuntu Local Security Checks	1/6/2021	8/27/2024	high

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