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    Linux Security

    SUSE: 2020:3544-1 important: the Linux Kernel

    Date 26 Nov 2020
    223
    Posted By LinuxSecurity Advisories
    An update that solves 26 vulnerabilities and has 34 fixes is now available.
    
       SUSE Security Update: Security update for the Linux Kernel
    ______________________________________________________________________________
    
    Announcement ID:    SUSE-SU-2020:3544-1
    Rating:             important
    References:         #1051510 #1058115 #1065600 #1131277 #1160947 
                        #1163524 #1166965 #1168468 #1170139 #1170232 
                        #1170415 #1171417 #1171675 #1172073 #1172366 
                        #1173115 #1173233 #1175228 #1175306 #1175721 
                        #1175882 #1176011 #1176235 #1176278 #1176381 
                        #1176423 #1176482 #1176485 #1176698 #1176721 
                        #1176722 #1176723 #1176725 #1176732 #1176869 
                        #1176907 #1176922 #1176935 #1176950 #1176990 
                        #1177027 #1177086 #1177121 #1177206 #1177340 
                        #1177410 #1177411 #1177470 #1177511 #1177724 
                        #1177725 #1177766 #1177816 #1178123 #1178330 
                        #1178393 #1178669 #1178765 #1178782 #1178838 
                        
    Cross-References:   CVE-2020-0404 CVE-2020-0427 CVE-2020-0430
                        CVE-2020-0431 CVE-2020-0432 CVE-2020-12351
                        CVE-2020-12352 CVE-2020-14351 CVE-2020-14381
                        CVE-2020-14390 CVE-2020-16120 CVE-2020-2521
                        CVE-2020-25212 CVE-2020-25284 CVE-2020-25285
                        CVE-2020-25641 CVE-2020-25643 CVE-2020-25645
                        CVE-2020-25656 CVE-2020-25668 CVE-2020-25704
                        CVE-2020-25705 CVE-2020-26088 CVE-2020-27673
                        CVE-2020-27675 CVE-2020-8694
    Affected Products:
                        SUSE OpenStack Cloud Crowbar 9
                        SUSE OpenStack Cloud 9
                        SUSE Linux Enterprise Server for SAP 12-SP4
                        SUSE Linux Enterprise Server 12-SP4-LTSS
                        SUSE Linux Enterprise High Availability 12-SP4
    ______________________________________________________________________________
    
       An update that solves 26 vulnerabilities and has 34 fixes
       is now available.
    
    Description:
    
    
       The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various
       security and bug fixes.
    
       The following security bugs were fixed:
    
       - CVE-2020-25705: A flaw in the way reply ICMP packets are limited in was
         found that allowed to quickly scan open UDP ports. This flaw allowed 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 and services
         that rely on UDP source port randomization (like DNS) are indirectly
         affected as well. Kernel versions may be vulnerable to this issue
         (bsc#1175721, bsc#1178782).
       - CVE-2020-25704: Fixed a memory leak in perf_event_parse_addr_filter()
         (bsc#1178393).
       - CVE-2020-25668: Fixed a use-after-free in con_font_op() (bnc#1178123).
       - CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl
         (bnc#1177766).
       - CVE-2020-25285: Fixed a race condition between hugetlb sysctl handlers
         in mm/hugetlb.c (bnc#1176485).
       - CVE-2020-0430: Fixed an OOB read in skb_headlen of
         /include/linux/skbuff.h (bnc#1176723).
       - CVE-2020-14351: Fixed a race in the perf_mmap_close() function
         (bsc#1177086).
       - CVE-2020-16120: Fixed a permissions issue in ovl_path_open()
         (bsc#1177470).
       - CVE-2020-8694: Restricted energy meter to root access (bsc#1170415).
       - CVE-2020-12351: Implemented a kABI workaround for bluetooth l2cap_ops
         filter addition (bsc#1177724).
       - CVE-2020-12352: Fixed an information leak when processing certain AMP
         packets aka "BleedingTooth" (bsc#1177725).
       - CVE-2020-25212: Fixed a TOCTOU mismatch in the NFS client code
         (bnc#1176381).
       - CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between
         two Geneve endpoints to be unencrypted (bnc#1177511).
       - CVE-2020-14381: Fixed a UAF in the fast user mutex (futex) wait
         operation (bsc#1176011).
       - CVE-2020-25643: Fixed an improper input validation in the
         ppp_cp_parse_cr function of the HDLC_PPP module (bnc#1177206).
       - CVE-2020-25641: Fixed a zero-length biovec request issued by the block
         subsystem could have caused the kernel to enter an infinite loop,
         causing a denial of service (bsc#1177121).
       - CVE-2020-26088: Fixed an improper CAP_NET_RAW check in NFC socket
         creation could have been used by local attackers to create raw sockets,
         bypassing security mechanisms (bsc#1176990).
       - CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory
         corruption or a denial of service when changing screen size
         (bnc#1176235).
       - CVE-2020-0432: Fixed an out of bounds write due to an integer overflow
         (bsc#1176721).
       - CVE-2020-0427: Fixed an out of bounds read due to a use after free
         (bsc#1176725).
       - CVE-2020-0431: Fixed an out of bounds write due to a missing bounds
         check (bsc#1176722).
       - CVE-2020-0404: Fixed a linked list corruption due to an unusual root
         cause (bsc#1176423).
       - CVE-2020-25284: Fixed an incomplete permission checking for access to
         rbd devices, which could have been leveraged by local attackers to map
         or unmap rbd block devices (bsc#1176482).
       - CVE-2020-27673: Fixed an issue where rogue guests could have caused
         denial of service of Dom0 via high frequency events (XSA-332 bsc#1177411)
       - CVE-2020-27675: Fixed a race condition in event handler which may crash
         dom0 (XSA-331 bsc#1177410).
    
       The following non-security bugs were fixed:
    
       - btrfs: remove root usage from can_overcommit (bsc#1131277).
       - hv: vmbus: Add timeout to vmbus_wait_for_unload (bsc#1177816).
       - hyperv_fb: disable superfluous VERSION_WIN10_V5 case (bsc#1175306).
       - hyperv_fb: Update screen_info after removing old framebuffer
         (bsc#1175306).
       - livepatch: Add -fdump-ipa-clones to build (). Add support for
         -fdump-ipa-clones GCC option. Update config files accordingly.
       - livepatch: Test if -fdump-ipa-clones is really available As of now we
         add -fdump-ipa-clones unconditionally. It does not cause a trouble if
         the kernel is build with the supported toolchain. Otherwise it could
         fail easily. Do the correct thing and test for the availability.
       - NFS: On fatal writeback errors, we need to call
         nfs_inode_remove_request() (bsc#1177340).
       - NFS: only invalidate dentrys that are clearly invalid (bsc#1178669
         bsc#1170139).
       - NFS: Revalidate the file mapping on all fatal writeback errors
         (bsc#1177340).
       - NFSv4: do not mark all open state for recovery when handling recallable
         state revoked flag (bsc#1176935).
       - obsolete_kmp: provide newer version than the obsoleted one (boo#1170232).
       - ocfs2: give applications more IO opportunities during fstrim
         (bsc#1175228).
       - powerpc/pseries/cpuidle: add polling idle for shared processor guests
         (bsc#1178765 ltc#188968).
       - rpadlpar_io: Add MODULE_DESCRIPTION entries to kernel modules
         (bsc#1176869 ltc#188243).
       - scsi: fnic: Do not call 'scsi_done()' for unhandled commands
         (bsc#1168468, bsc#1171675).
       - scsi: qla2xxx: Do not consume srb greedily (bsc#1173233).
       - scsi: qla2xxx: Handle incorrect entry_type entries (bsc#1173233).
       - video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host
         (bsc#1175306).
       - video: hyperv: hyperv_fb: Support deferred IO for Hyper-V frame buffer
         driver (bsc#1175306).
       - video: hyperv: hyperv_fb: Use physical memory for fb on HyperV Gen 1 VMs
         (bsc#1175306).
       - x86/kexec: Use up-to-dated screen_info copy to fill boot params
         (bsc#1175306).
       - xen/blkback: use lateeoi irq binding (XSA-332 bsc#1177411).
       - xen/events: add a new "late EOI" evtchn framework (XSA-332 bsc#1177411).
       - xen/events: add a proper barrier to 2-level uevent unmasking (XSA-332
         bsc#1177411).
       - xen/events: avoid removing an event channel while handling it (XSA-331
         bsc#1177410).
       - xen/events: block rogue events for some time (XSA-332 bsc#1177411).
       - xen/events: defer eoi in case of excessive number of events (XSA-332
         bsc#1177411).
       - xen/events: do not use chip_data for legacy IRQs (XSA-332 bsc#1065600).
       - xen/events: fix race in evtchn_fifo_unmask() (XSA-332 bsc#1177411).
       - xen/events: switch user event channels to lateeoi model (XSA-332
         bsc#1177411).
       - xen/events: use a common cpu hotplug hook for event channels (XSA-332
         bsc#1177411).
       - xen/netback: use lateeoi irq binding (XSA-332 bsc#1177411).
       - xen/pciback: use lateeoi irq binding (XSA-332 bsc#1177411).
       - xen/scsiback: use lateeoi irq binding (XSA-332 bsc#1177411).
       - xen uses irqdesc::irq_data_common::handler_data to store a per interrupt
         XEN data pointer which contains XEN specific information (XSA-332
         bsc#1065600).
    
    
    Special Instructions and Notes:
    
       Please reboot the system after installing this update.
    
    Patch Instructions:
    
       To install this SUSE Security Update use the SUSE recommended installation methods
       like YaST online_update or "zypper patch".
    
       Alternatively you can run the command listed for your product:
    
       - SUSE OpenStack Cloud Crowbar 9:
    
          zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-9-2020-3544=1
    
       - SUSE OpenStack Cloud 9:
    
          zypper in -t patch SUSE-OpenStack-Cloud-9-2020-3544=1
    
       - SUSE Linux Enterprise Server for SAP 12-SP4:
    
          zypper in -t patch SUSE-SLE-SAP-12-SP4-2020-3544=1
    
       - SUSE Linux Enterprise Server 12-SP4-LTSS:
    
          zypper in -t patch SUSE-SLE-SERVER-12-SP4-LTSS-2020-3544=1
    
       - SUSE Linux Enterprise High Availability 12-SP4:
    
          zypper in -t patch SUSE-SLE-HA-12-SP4-2020-3544=1
    
    
    
    Package List:
    
       - SUSE OpenStack Cloud Crowbar 9 (noarch):
    
          kernel-devel-4.12.14-95.65.1
          kernel-macros-4.12.14-95.65.1
          kernel-source-4.12.14-95.65.1
    
       - SUSE OpenStack Cloud Crowbar 9 (x86_64):
    
          kernel-default-4.12.14-95.65.1
          kernel-default-base-4.12.14-95.65.1
          kernel-default-base-debuginfo-4.12.14-95.65.1
          kernel-default-debuginfo-4.12.14-95.65.1
          kernel-default-debugsource-4.12.14-95.65.1
          kernel-default-devel-4.12.14-95.65.1
          kernel-default-devel-debuginfo-4.12.14-95.65.1
          kernel-syms-4.12.14-95.65.1
    
       - SUSE OpenStack Cloud 9 (x86_64):
    
          kernel-default-4.12.14-95.65.1
          kernel-default-base-4.12.14-95.65.1
          kernel-default-base-debuginfo-4.12.14-95.65.1
          kernel-default-debuginfo-4.12.14-95.65.1
          kernel-default-debugsource-4.12.14-95.65.1
          kernel-default-devel-4.12.14-95.65.1
          kernel-default-devel-debuginfo-4.12.14-95.65.1
          kernel-syms-4.12.14-95.65.1
    
       - SUSE OpenStack Cloud 9 (noarch):
    
          kernel-devel-4.12.14-95.65.1
          kernel-macros-4.12.14-95.65.1
          kernel-source-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server for SAP 12-SP4 (ppc64le x86_64):
    
          kernel-default-4.12.14-95.65.1
          kernel-default-base-4.12.14-95.65.1
          kernel-default-base-debuginfo-4.12.14-95.65.1
          kernel-default-debuginfo-4.12.14-95.65.1
          kernel-default-debugsource-4.12.14-95.65.1
          kernel-default-devel-4.12.14-95.65.1
          kernel-syms-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server for SAP 12-SP4 (noarch):
    
          kernel-devel-4.12.14-95.65.1
          kernel-macros-4.12.14-95.65.1
          kernel-source-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server for SAP 12-SP4 (x86_64):
    
          kernel-default-devel-debuginfo-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server 12-SP4-LTSS (aarch64 ppc64le s390x x86_64):
    
          kernel-default-4.12.14-95.65.1
          kernel-default-base-4.12.14-95.65.1
          kernel-default-base-debuginfo-4.12.14-95.65.1
          kernel-default-debuginfo-4.12.14-95.65.1
          kernel-default-debugsource-4.12.14-95.65.1
          kernel-default-devel-4.12.14-95.65.1
          kernel-syms-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server 12-SP4-LTSS (x86_64):
    
          kernel-default-devel-debuginfo-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server 12-SP4-LTSS (noarch):
    
          kernel-devel-4.12.14-95.65.1
          kernel-macros-4.12.14-95.65.1
          kernel-source-4.12.14-95.65.1
    
       - SUSE Linux Enterprise Server 12-SP4-LTSS (s390x):
    
          kernel-default-man-4.12.14-95.65.1
    
       - SUSE Linux Enterprise High Availability 12-SP4 (ppc64le s390x x86_64):
    
          cluster-md-kmp-default-4.12.14-95.65.1
          cluster-md-kmp-default-debuginfo-4.12.14-95.65.1
          dlm-kmp-default-4.12.14-95.65.1
          dlm-kmp-default-debuginfo-4.12.14-95.65.1
          gfs2-kmp-default-4.12.14-95.65.1
          gfs2-kmp-default-debuginfo-4.12.14-95.65.1
          kernel-default-debuginfo-4.12.14-95.65.1
          kernel-default-debugsource-4.12.14-95.65.1
          ocfs2-kmp-default-4.12.14-95.65.1
          ocfs2-kmp-default-debuginfo-4.12.14-95.65.1
    
    
    References:
    
       https://www.suse.com/security/cve/CVE-2020-0404.html
       https://www.suse.com/security/cve/CVE-2020-0427.html
       https://www.suse.com/security/cve/CVE-2020-0430.html
       https://www.suse.com/security/cve/CVE-2020-0431.html
       https://www.suse.com/security/cve/CVE-2020-0432.html
       https://www.suse.com/security/cve/CVE-2020-12351.html
       https://www.suse.com/security/cve/CVE-2020-12352.html
       https://www.suse.com/security/cve/CVE-2020-14351.html
       https://www.suse.com/security/cve/CVE-2020-14381.html
       https://www.suse.com/security/cve/CVE-2020-14390.html
       https://www.suse.com/security/cve/CVE-2020-16120.html
       https://www.suse.com/security/cve/CVE-2020-2521.html
       https://www.suse.com/security/cve/CVE-2020-25212.html
       https://www.suse.com/security/cve/CVE-2020-25284.html
       https://www.suse.com/security/cve/CVE-2020-25285.html
       https://www.suse.com/security/cve/CVE-2020-25641.html
       https://www.suse.com/security/cve/CVE-2020-25643.html
       https://www.suse.com/security/cve/CVE-2020-25645.html
       https://www.suse.com/security/cve/CVE-2020-25656.html
       https://www.suse.com/security/cve/CVE-2020-25668.html
       https://www.suse.com/security/cve/CVE-2020-25704.html
       https://www.suse.com/security/cve/CVE-2020-25705.html
       https://www.suse.com/security/cve/CVE-2020-26088.html
       https://www.suse.com/security/cve/CVE-2020-27673.html
       https://www.suse.com/security/cve/CVE-2020-27675.html
       https://www.suse.com/security/cve/CVE-2020-8694.html
       https://bugzilla.suse.com/1051510
       https://bugzilla.suse.com/1058115
       https://bugzilla.suse.com/1065600
       https://bugzilla.suse.com/1131277
       https://bugzilla.suse.com/1160947
       https://bugzilla.suse.com/1163524
       https://bugzilla.suse.com/1166965
       https://bugzilla.suse.com/1168468
       https://bugzilla.suse.com/1170139
       https://bugzilla.suse.com/1170232
       https://bugzilla.suse.com/1170415
       https://bugzilla.suse.com/1171417
       https://bugzilla.suse.com/1171675
       https://bugzilla.suse.com/1172073
       https://bugzilla.suse.com/1172366
       https://bugzilla.suse.com/1173115
       https://bugzilla.suse.com/1173233
       https://bugzilla.suse.com/1175228
       https://bugzilla.suse.com/1175306
       https://bugzilla.suse.com/1175721
       https://bugzilla.suse.com/1175882
       https://bugzilla.suse.com/1176011
       https://bugzilla.suse.com/1176235
       https://bugzilla.suse.com/1176278
       https://bugzilla.suse.com/1176381
       https://bugzilla.suse.com/1176423
       https://bugzilla.suse.com/1176482
       https://bugzilla.suse.com/1176485
       https://bugzilla.suse.com/1176698
       https://bugzilla.suse.com/1176721
       https://bugzilla.suse.com/1176722
       https://bugzilla.suse.com/1176723
       https://bugzilla.suse.com/1176725
       https://bugzilla.suse.com/1176732
       https://bugzilla.suse.com/1176869
       https://bugzilla.suse.com/1176907
       https://bugzilla.suse.com/1176922
       https://bugzilla.suse.com/1176935
       https://bugzilla.suse.com/1176950
       https://bugzilla.suse.com/1176990
       https://bugzilla.suse.com/1177027
       https://bugzilla.suse.com/1177086
       https://bugzilla.suse.com/1177121
       https://bugzilla.suse.com/1177206
       https://bugzilla.suse.com/1177340
       https://bugzilla.suse.com/1177410
       https://bugzilla.suse.com/1177411
       https://bugzilla.suse.com/1177470
       https://bugzilla.suse.com/1177511
       https://bugzilla.suse.com/1177724
       https://bugzilla.suse.com/1177725
       https://bugzilla.suse.com/1177766
       https://bugzilla.suse.com/1177816
       https://bugzilla.suse.com/1178123
       https://bugzilla.suse.com/1178330
       https://bugzilla.suse.com/1178393
       https://bugzilla.suse.com/1178669
       https://bugzilla.suse.com/1178765
       https://bugzilla.suse.com/1178782
       https://bugzilla.suse.com/1178838
    

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