The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-1749: Use ip6_dst_lookup_flow instead of ip6_dst_lookup (bsc#1165629).

CVE-2020-14314: Fixed a potential negative array index in do_split() (bsc#1173798).

CVE-2020-14356: Fixed a NULL pointer dereference in cgroupv2 subsystem which could have led to privilege escalation (bsc#1175213).

CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).

CVE-2020-16166: Fixed a potential issue which could have allowed remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG (bsc#1174757).

CVE-2020-24394: Fixed an issue which could set incorrect permissions on new filesystem objects when the filesystem lacks ACL support (bsc#1175518).

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication Bluetooth might have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access (bsc#1171988).

CVE-2020-14386: Fixed a potential local privilege escalation via memory corruption (bsc#1176069).

The update package also includes non-security fixes. See advisory for details.

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

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

  - In create_pinctrl of core.c, there is a possible out of     bounds read due to a use after free. This could lead to     local information disclosure with no additional     execution privileges needed.(CVE-2020-0427)

  - NULL-ptr deref in the spk_ttyio_receive_buf2() function     in spk_ttyio.c.(CVE-2020-27830)

  - In do_epoll_ctl and ep_loop_check_proc of eventpoll.c,     there is a possible use after free due to a logic     error. This could lead to local escalation of privilege     with no additional execution privileges     needed.(CVE-2020-0466)

  - In the nl80211_policy policy of nl80211.c, there is a     possible out of bounds read due to a missing bounds     check. This could lead to local information disclosure     with System execution privileges     needed.(CVE-2020-27068)

  - use-after-free read in sunkbd_reinit in     drivers/input/keyboard/sunkbd.c.(CVE-2020-25669)

  - A flaw was found in the Linux kernels implementation of     MIDI, where an attacker with a local account and the     permissions to issue an ioctl commands to midi devices,     could trigger a use-after-free. A write to this     specific memory while freed and before use could cause     the flow of execution to change and possibly allow for     memory corruption or privilege     escalation.(CVE-2020-27786)

  - An issue was discovered in romfs_dev_read in     fs/romfs/storage.c in the Linux kernel before 5.8.4.
    Uninitialized memory leaks to userspace, aka     CID-bcf85fcedfdd.(CVE-2020-29371)

  - A slab-out-of-bounds read in fbcon in the Linux kernel     before 5.9.7 could be used by local attackers to read     privileged information or potentially crash the kernel,     aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for     manipulations such as font height.(CVE-2020-28974)

  - A locking inconsistency issue was discovered in the tty     subsystem of the Linux kernel through 5.9.13.
    drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c may     allow a read-after-free attack against TIOCGSID, aka     CID-c8bcd9c5be24.(CVE-2020-29660)

  - A locking issue was discovered in the tty subsystem of     the Linux kernel through 5.9.13.
    drivers/tty/tty_jobctrl.c allows a use-after-free     attack against TIOCSPGRP, aka     CID-54ffccbf053b.(CVE-2020-29661)

  - An issue was discovered in     drivers/accessibility/speakup/spk_ttyio.c in the Linux     kernel through 5.9.9. Local attackers on systems with     the speakup driver could cause a local denial of     service attack, aka CID-d41227544427. This occurs     because of an invalid free when the line discipline is     used more than once.(CVE-2020-28941)

  - A buffer over-read (at the framebuffer layer) in the     fbcon code in the Linux kernel before 5.8.15 could be     used by local attackers to read kernel memory, aka     CID-6735b4632def.(CVE-2020-28915)

  - A flaw in the way reply ICMP packets are limited in the     Linux kernel functionality was found that allows to     quickly scan open UDP ports. This flaw allows an     off-path remote user to effectively bypassing source     port UDP randomization. The highest threat from this     vulnerability is to confidentiality and possibly     integrity, because software that relies on UDP source     port randomization are indirectly affected as well.
    Kernel versions before 5.10 may be vulnerable to this     issue.(CVE-2020-25705)

  - race condition in fg_console can lead to use-after-free     in con_font_op.(CVE-2020-25668)

  - The Linux kernel before version 5.8 is vulnerable to a     NULL pointer dereference in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init
    _ports() that allows local users to cause a denial of     service by using the p->serial_in pointer which     uninitialized.(CVE-2020-15437)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x. Guest OS users     can cause a denial of service (host OS hang) via a high     rate of events to dom0, aka     CID-e99502f76271.(CVE-2020-27673)

  - An issue was discovered in __split_huge_pmd in     mm/huge_memory.c in the Linux kernel before 5.7.5. The     copy-on-write implementation can grant unintended write     access because of a race condition in a THP mapcount     check, aka CID-c444eb564fb1.(CVE-2020-29368)

  - An issue was discovered in the Linux kernel through     5.9.1, as used with Xen through 4.14.x.
    drivers/xen/events/events_base.c allows event-channel     removal during the event-handling loop (a race     condition). This can cause a use-after-free or NULL     pointer dereference, as demonstrated by a dom0 crash     via events for an in-reconfiguration paravirtualized     device, aka CID-073d0552ead5.(CVE-2020-27675)

  - A flaw was found in the way RTAS handled memory     accesses in userspace to kernel communication. On a     locked down (usually due to Secure Boot) guest system     running on top of PowerVM or KVM hypervisors (pseries     platform) a root like local user could use this flaw to     further increase their privileges to that of a running     kernel.(CVE-2020-27777)

  - There is a memory leak in     perf_event_parse_addr_filter.(CVE-2020-25704)

  - Insufficient access control in the Linux kernel driver     for some Intel(R) Processors may allow an authenticated     user to potentially enable information disclosure via     local access.(CVE-2020-8694)

  - A flaw was found in the Linux kernel. A use-after-free     was found in the way the console subsystem was using     ioctls KDGKBSENT and KDSKBSENT. A local user could use     this flaw to get read memory access out of bounds. The     highest threat from this vulnerability is to data     confidentiality.(CVE-2020-25656)

  - In kbd_keycode of keyboard.c, there is a possible out     of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-144161459(CVE-2020-0431)

  - A flaw was found in the HDLC_PPP module of the Linux     kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input     validation in the ppp_cp_parse_cr function which can     cause the system to crash or cause a denial of service.
    The highest threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-25643)

  - A flaw was found in the Linux kernel in versions before     5.9-rc7. Traffic between two Geneve endpoints may be     unencrypted when IPsec is configured to encrypt traffic     for the specific UDP port used by the GENEVE tunnel     allowing anyone between the two endpoints to read the     traffic unencrypted. The main threat from this     vulnerability is to data     confidentiality.(CVE-2020-25645)

  - An information leak flaw was found in the way the Linux     kernel's Bluetooth stack implementation handled     initialization of stack memory when handling certain     AMP packets. A remote attacker in adjacent range could     use this flaw to leak small portions of stack memory on     the system by sending a specially crafted AMP packets.
    The highest threat from this vulnerability is to data     confidentiality.(CVE-2020-12352)

  - A flaw was found in the way the Linux kernel Bluetooth     implementation handled L2CAP packets with A2MP CID. A     remote attacker in adjacent range could use this flaw     to crash the system causing denial of service or     potentially execute arbitrary code on the system by     sending a specially crafted L2CAP packet. The highest     threat from this vulnerability is to data     confidentiality and integrity as well as system     availability.(CVE-2020-12351)

  - A missing CAP_NET_RAW check in NFC socket creation in     net/nfc/rawsock.c in the Linux kernel before 5.8.2     could be used by local attackers to create raw sockets,     bypassing security mechanisms, aka     CID-26896f01467a.(CVE-2020-26088)

  - A flaw was found in the Linux kernel's implementation     of biovecs in versions before 5.9-rc7. A zero-length     biovec request issued by the block subsystem could     cause the kernel to enter an infinite loop, causing a     denial of service. This flaw allows a local attacker     with basic privileges to issue requests to a block     device, resulting in a denial of service. The highest     threat from this vulnerability is to system     availability.(CVE-2020-25641)

  - In skb_to_mamac of networking.c, there is a possible     out of bounds write due to an integer overflow. This     could lead to local escalation of privilege with no     additional execution privileges needed. User     interaction is not needed for exploitation.Product:
    AndroidVersions: Android kernelAndroid ID:
    A-143560807(CVE-2020-0432)

  - A TOCTOU mismatch in the NFS client code in the Linux     kernel before 5.8.3 could be used by local attackers to     corrupt memory or possibly have unspecified other     impact because a size check is in fs/ nfs/ nfs4proc.c     instead of fs/ nfs/ nfs4xdr.c, aka     CID-b4487b935452..(CVE-2020-25212)

  - A flaw was found in the Linux kernel before 5.9-rc4. A     failure of the file system metadata validator in XFS     can cause an inode with a valid, user-creatable     extended attribute to be flagged as corrupt. This can     lead to the filesystem being shutdown, or otherwise     rendered inaccessible until it is remounted, leading to     a denial of service. The highest threat from this     vulnerability is to system     availability.(CVE-2020-14385)

  - In uvc_scan_chain_forward of uvc_driver.c, there is a     possible linked list corruption due to an unusual root     cause. This could lead to local escalation of privilege     in the kernel with no additional execution privileges     needed. User interaction is not needed for     exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-111893654References: Upstream     kernel(CVE-2020-0404)

  - The rbd block device driver in drivers/block/rbd.c in     the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which     could be leveraged by local attackers to map or unmap     rbd block devices, aka     CID-f44d04e696fe.(CVE-2020-25284)

  - A race condition between hugetlb sysctl handlers in     mm/hugetlb.c in the Linux kernel before 5.8.8 could be     used by local attackers to corrupt memory, cause a NULL     pointer dereference, or possibly have unspecified other     impact, aka CID-17743798d812.(CVE-2020-25285)

  - A memory out-of-bounds read flaw was found in the Linux     kernel before 5.9-rc2 with the ext3/ext4 file system,     in the way it accesses a directory with broken     indexing. This flaw allows a local user to crash the     system if the directory exists. The highest threat from     this vulnerability is to system     availability.(CVE-2020-14314)

  - A flaw was found in the Linux kernel before 5.9-rc4.
    Memory corruption can be exploited to gain root     privileges from unprivileged processes. The highest     threat from this vulnerability is to data     confidentiality and integrity.(CVE-2020-14386)

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.

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2021:1578 advisory.

  - kernel: memory leak in sof_set_get_large_ctrl_data() function in sound/soc/sof/ipc.c (CVE-2019-18811)

  - kernel: use-after-free caused by a malicious USB device in the drivers/usb/misc/adutux.c driver     (CVE-2019-19523)

  - kernel: use-after-free bug caused by a malicious USB device in the drivers/usb/misc/iowarrior.c driver     (CVE-2019-19528)

  - kernel: possible out of bounds write in kbd_keycode of keyboard.c (CVE-2020-0431)

  - kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in     drivers/media/usb/gspca/ov519.c (CVE-2020-11608)

  - kernel: DoS by corrupting mountpoint reference counter (CVE-2020-12114)

  - kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362)

  - kernel: use-after-free in usb_sg_cancel function in drivers/usb/core/message.c (CVE-2020-12464)

  - kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)

  - kernel: Use After Free vulnerability in cgroup BPF component (CVE-2020-14356)

  - kernel: NULL pointer dereference in serial8250_isa_init_ports function in     drivers/tty/serial/8250/8250_core.c (CVE-2020-15437)

  - kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)

  - kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)

  - kernel: incomplete permission checking for access to rbd devices (CVE-2020-25284)

  - kernel: race condition between hugetlb sysctl handlers in mm/hugetlb.c (CVE-2020-25285)

  - kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow     (CVE-2020-25643)

  - kernel: perf_event_parse_addr_filter memory (CVE-2020-25704)

  - kernel: use-after-free in kernel midi subsystem (CVE-2020-27786)

  - kernel: child process is able to access parent mm through hfi dev file handle (CVE-2020-27835)

  - kernel: slab-out-of-bounds read in fbcon (CVE-2020-28974)

  - kernel: fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent (CVE-2020-35508)

  - kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations (CVE-2020-36322)

  - kernel: use after free in tun_get_user of tun.c could lead to local escalation of privilege     (CVE-2021-0342)

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

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:1578 advisory.

  - A memory leak in the sof_set_get_large_ctrl_data() function in sound/soc/sof/ipc.c in the Linux kernel     through 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering     sof_get_ctrl_copy_params() failures, aka CID-45c1380358b1. (CVE-2019-18811)

  - In the Linux kernel before 5.3.7, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79. (CVE-2019-19523)

  - In the Linux kernel before 5.3.7, there is a use-after-free bug that can be caused by a malicious USB     device in the drivers/usb/misc/iowarrior.c driver, aka CID-edc4746f253d. (CVE-2019-19528)

  - In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This     could lead to local escalation of privilege with no additional execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-144161459     (CVE-2020-0431)

  - An issue was discovered in the Linux kernel before 5.6.1. drivers/media/usb/gspca/ov519.c allows NULL     pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints, aka     CID-998912346c0d. (CVE-2020-11608)

  - A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x before 4.4.221, 4.9.x before     4.9.221, 4.14.x before 4.14.178, 4.19.x before 4.19.119, and 5.x before 5.3 allows local users to cause a     denial of service (panic) by corrupting a mountpoint reference counter. (CVE-2020-12114)

  - Integer overflow in the firmware for some Intel(R) Graphics Drivers for Windows * before version     26.20.100.7212 and before Linux kernel version 5.5 may allow a privileged user to potentially enable an     escalation of privilege via local access. (CVE-2020-12362)

  - Improper input validation in some Intel(R) Graphics Drivers for Windows* before version 26.20.100.7212 and     before Linux kernel version 5.5 may allow a privileged user to potentially enable a denial of service via     local access. (CVE-2020-12363)

  - Null pointer reference in some Intel(R) Graphics Drivers for Windows* before version 26.20.100.7212 and     before version Linux kernel version 5.5 may allow a privileged user to potentially enable a denial of     service via local access. (CVE-2020-12364)

  - usb_sg_cancel in drivers/usb/core/message.c in the Linux kernel before 5.6.8 has a use-after-free because     a transfer occurs without a reference, aka CID-056ad39ee925. (CVE-2020-12464)

  - A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file     system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash     the system if the directory exists. The highest threat from this vulnerability is to system availability.
    (CVE-2020-14314)

  - A flaw null pointer dereference in the Linux kernel cgroupv2 subsystem in versions before 5.7.10 was found     in the way when reboot the system. A local user could use this flaw to crash the system or escalate their     privileges on the system. (CVE-2020-14356)

  - The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in     drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial     of service by using the p->serial_in pointer which uninitialized. (CVE-2020-15437)

  - In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new     filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the     current umask is not considered. (CVE-2020-24394)

  - A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers     to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c     instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452. (CVE-2020-25212)

  - The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete     permission checking for access to rbd devices, which could be leveraged by local attackers to map or unmap     rbd block devices, aka CID-f44d04e696fe. (CVE-2020-25284)

  - A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be     used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified     other impact, aka CID-17743798d812. (CVE-2020-25285)

  - A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption     and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause     the system to crash or cause a denial of service. The highest threat from this vulnerability is to data     confidentiality and integrity as well as system availability. (CVE-2020-25643)

  - A flaw memory leak in the Linux kernel performance monitoring subsystem was found in the way if using     PERF_EVENT_IOC_SET_FILTER. A local user could use this flaw to starve the resources causing denial of     service. (CVE-2020-25704)

  - A flaw was found in the Linux kernel's implementation of MIDI, where an attacker with a local account and     the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to     this specific memory while freed and before use causes the flow of execution to change and possibly allow     for memory corruption or privilege escalation. The highest threat from this vulnerability is to     confidentiality, integrity, as well as system availability. (CVE-2020-27786)

  - A use after free in the Linux kernel infiniband hfi1 driver in versions prior to 5.10-rc6 was found in the     way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system.
    (CVE-2020-27835)

  - A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to     read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because     KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height. (CVE-2020-28974)

  - A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux     kernel child/parent process identification handling while filtering signal handlers. A local attacker is     able to abuse this flaw to bypass checks to send any signal to a privileged process. (CVE-2020-35508)

  - An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka     CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system     crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as     CVE-2021-28950. (CVE-2020-36322)

  - In tun_get_user of tun.c, there is possible memory corruption due to a use after free. This could lead to     local escalation of privilege with System execution privileges required. User interaction is not required     for exploitation. Product: Android; Versions: Android kernel; Android ID: A-146554327. (CVE-2021-0342)

  - In pfkey_dump of af_key.c, there is a possible out-of-bounds read due to a missing bounds check. This     could lead to local information disclosure in the kernel with System execution privileges needed. User     interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-110373476     (CVE-2021-0605)

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

The version of AOS installed on the remote host is prior to 5.19.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.19.1 advisory.

  - In Network Security Services (NSS) before 3.46, several cryptographic primitives had missing length     checks. In cases where the application calling the library did not perform a sanity check on the inputs it     could result in a crash due to a buffer overflow. (CVE-2019-17006)

  - Heap buffer overflow in the TFTP protocol handler in cURL 7.19.4 to 7.65.3. (CVE-2019-5482)

  - In all versions of cpio before 2.13 does not properly validate input files when generating TAR archives.
    When cpio is used to create TAR archives from paths an attacker can write to, the resulting archive may     contain files with permissions the attacker did not have or in paths he did not have access to. Extracting     those archives from a high-privilege user without carefully reviewing them may lead to the compromise of     the system. (CVE-2019-14866)

  - If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to     8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the     HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP     headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This     could lead to users seeing responses for unexpected resources. (CVE-2020-13943)

  - Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported     versions that are affected are 5.6.45 and prior, 5.7.27 and prior and 8.0.17 and prior. Easily exploitable     vulnerability allows low privileged attacker with network access via multiple protocols to compromise     MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang     or frequently repeatable crash (complete DOS) of MySQL Server. (CVE-2019-2974)

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	Published	Updated	Severity
143840	SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2623-1)	Nessus	SuSE Local Security Checks	12/9/2020	2/5/2024	high
147690	EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642)	Nessus	Huawei Local Security Checks	3/11/2021	2/9/2023	critical
149874	CentOS 8 : kernel (CESA-2021:1578)	Nessus	CentOS Local Security Checks	5/24/2021	12/29/2023	high
157595	AlmaLinux 8 : kernel (ALSA-2021:1578)	Nessus	Alma Linux Local Security Checks	2/9/2022	11/10/2023	high
164584	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.19.1)	Nessus	Misc.	9/1/2022	7/22/2025	critical
140365	openSUSE Security Update : the Linux Kernel (openSUSE-2020-1325) (Spectre)	Nessus	SuSE Local Security Checks	9/8/2020	2/21/2024	high

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