Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2021:14630-1
Rating: important
References: #1152107 #1168952 #1173659 #1173942 #1174205 #1174247 #1174993 #1175691 #1176011 #1176012 #1176235 #1176253 #1176278 #1176395 #1176423 #1176482 #1176485 #1176722 #1176896 #1177206 #1177226 #1177666 #1177766 #1177906 #1178123 #1178182 #1178589 #1178590 #1178622 #1178886 #1179107 #1179140 #1179141 #1179419 #1179601 #1179616 #1179745 #1179877 #1180029 #1180030 #1180052 #1180086 #1180559 #1180562 #1181158 #1181166 #1181349 #1181553
Cross-References:CVE-2019-16746 CVE-2020-0404 CVE-2020-0431 CVE-2020-0465 CVE-2020-11668 CVE-2020-14331 CVE-2020-14353 CVE-2020-14381 CVE-2020-14390 CVE-2020-15436 CVE-2020-15437 CVE-2020-25211 CVE-2020-25284 CVE-2020-25285 CVE-2020-25643 CVE-2020-25656 CVE-2020-25668 CVE-2020-25669 CVE-2020-27068 CVE-2020-27777 CVE-2020-27786 CVE-2020-28915 CVE-2020-28974 CVE-2020-29660 CVE-2020-29661 CVE-2020-36158 CVE-2020-4788 CVE-2021-3347
Affected Products:
  • SUSE Linux Enterprise Server 11-SP4-LTSS
  • SUSE Linux Enterprise Server 11-EXTRA
  • SUSE Linux Enterprise Debuginfo 11-SP4

An update that solves 28 vulnerabilities and has 20 fixes is now available.

Description:

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
  • CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).
  • CVE-2020-25211: Fixed a flaw where a local attacker was able to inject conntrack netlink configuration that could cause a denial of service or trigger the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter (bnc#1176395).
  • 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-2020-25284: 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-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).
  • CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).
  • CVE-2020-14353: Fixed an issue where keys - for keyctl prevent creating a different user's keyrings (bsc#1174993).
  • CVE-2020-14381: Fixed requeue paths such that filp was valid when dropping the references (bsc#1176011).
  • CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).
  • CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).
  • CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).
  • CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).
  • CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).
  • CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).
  • CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).
  • CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).
  • CVE-2020-25285: A race condition between hugetlb sysctl handlers in mm/hugetlb.c could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact (bnc#1176485 ).
  • CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service (bsc#1179140).
  • CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).
  • CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink camera USB driver (bnc#1168952).
  • CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123).
  • CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).
  • 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-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).
  • CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl (bnc#1177766).
  • CVE-2020-25643: Fixed a memory corruption and a read overflow which could have caused by improper input validation in the ppp_cp_parse_cr function (bsc#1177206).
  • CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659).

The following non-security bugs were fixed:
  • HID: Fix slab-out-of-bounds read in hid_field_extract (bsc#1180052).
  • cifs: bugfix for unreclaimed writeback pages in cifs_writev_requeue() (bsc#1177906).
  • mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo (bsc#1175691).
  • net/x25: fix a race in x25_bind() (bsc#1178590).
  • net/x25: prevent a couple of overflows (bsc#1178590).
  • tty: fix memleak in alloc_pid (bsc#1179745).
  • xfs: mark all internal workqueues as freezable (bsc#1181166).

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 Linux Enterprise Server 11-SP4-LTSS:
    zypper in -t patch slessp4-kernel-source-14630=1
  • SUSE Linux Enterprise Server 11-EXTRA:
    zypper in -t patch slexsp3-kernel-source-14630=1
  • SUSE Linux Enterprise Debuginfo 11-SP4:
    zypper in -t patch dbgsp4-kernel-source-14630=1

Package List:

  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):
    • kernel-default-3.0.101-108.120.1
    • kernel-default-base-3.0.101-108.120.1
    • kernel-default-devel-3.0.101-108.120.1
    • kernel-source-3.0.101-108.120.1
    • kernel-syms-3.0.101-108.120.1
    • kernel-trace-3.0.101-108.120.1
    • kernel-trace-base-3.0.101-108.120.1
    • kernel-trace-devel-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):
    • kernel-ec2-3.0.101-108.120.1
    • kernel-ec2-base-3.0.101-108.120.1
    • kernel-ec2-devel-3.0.101-108.120.1
    • kernel-xen-3.0.101-108.120.1
    • kernel-xen-base-3.0.101-108.120.1
    • kernel-xen-devel-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (ppc64):
    • kernel-bigmem-3.0.101-108.120.1
    • kernel-bigmem-base-3.0.101-108.120.1
    • kernel-bigmem-devel-3.0.101-108.120.1
    • kernel-ppc64-3.0.101-108.120.1
    • kernel-ppc64-base-3.0.101-108.120.1
    • kernel-ppc64-devel-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (s390x):
    • kernel-default-man-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586):
    • kernel-pae-3.0.101-108.120.1
    • kernel-pae-base-3.0.101-108.120.1
    • kernel-pae-devel-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):
    • kernel-default-extra-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):
    • kernel-xen-extra-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-EXTRA (x86_64):
    • kernel-trace-extra-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-EXTRA (ppc64):
    • kernel-ppc64-extra-3.0.101-108.120.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586):
    • kernel-pae-extra-3.0.101-108.120.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):
    • kernel-default-debuginfo-3.0.101-108.120.1
    • kernel-default-debugsource-3.0.101-108.120.1
    • kernel-trace-debuginfo-3.0.101-108.120.1
    • kernel-trace-debugsource-3.0.101-108.120.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 s390x x86_64):
    • kernel-default-devel-debuginfo-3.0.101-108.120.1
    • kernel-trace-devel-debuginfo-3.0.101-108.120.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):
    • kernel-ec2-debuginfo-3.0.101-108.120.1
    • kernel-ec2-debugsource-3.0.101-108.120.1
    • kernel-xen-debuginfo-3.0.101-108.120.1
    • kernel-xen-debugsource-3.0.101-108.120.1
    • kernel-xen-devel-debuginfo-3.0.101-108.120.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (ppc64):
    • kernel-bigmem-debuginfo-3.0.101-108.120.1
    • kernel-bigmem-debugsource-3.0.101-108.120.1
    • kernel-ppc64-debuginfo-3.0.101-108.120.1
    • kernel-ppc64-debugsource-3.0.101-108.120.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586):
    • kernel-pae-debuginfo-3.0.101-108.120.1
    • kernel-pae-debugsource-3.0.101-108.120.1
    • kernel-pae-devel-debuginfo-3.0.101-108.120.1

References: