Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2021:14724-1
Rating:	important
References:	bsc#1056134 bsc#1180963 bsc#1182715 bsc#1182716 bsc#1182717 bsc#1183400 bsc#1183696 bsc#1184120 bsc#1184194 bsc#1184198 bsc#1184208 bsc#1184211 bsc#1184393
Cross-References:	CVE-2020-35519 CVE-2020-36322 CVE-2021-20261 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 CVE-2021-28950 CVE-2021-28972 CVE-2021-29650 CVE-2021-30002 CVE-2021-3483
CVSS scores:	CVE-2020-35519 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-35519 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-36322 ( SUSE ): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVE-2020-36322 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-20261 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-20261 ( NVD ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-27363 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2021-27363 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L CVE-2021-27364 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2021-27364 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2021-27365 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-27365 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-28950 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-28950 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-28972 ( SUSE ): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-28972 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-29650 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-29650 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2021-30002 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-30002 ( NVD ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-3483 ( SUSE ): 6.5 CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H CVE-2021-3483 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:	SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4

An update that solves 11 vulnerabilities and has two security fixes can now be installed.

Description:

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

The following security bugs were fixed:

• CVE-2021-3483: Fixed a use-after-free in nosy.c (bsc#1184393).
• CVE-2021-30002: Fixed a memory leak for large arguments in video_usercopy (bsc#1184120).
• CVE-2021-29650: Fixed an issue where the netfilter subsystem allowed attackers to cause a denial of service (bsc#1184208).
• CVE-2021-28972: Fixed a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly (bsc#1184198).
• CVE-2021-28950: Fixed an infinite loop because a retry loop continually finds the same bad inode (bsc#1184194).
• CVE-2021-27365: Fixed an issue where an unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message (bsc#1182715).
• CVE-2021-27364: Fixed an issue where an attacker could craft Netlink messages (bsc#1182717).
• CVE-2021-27363: Fixed a kernel pointer leak which could have been used to determine the address of the iscsi_transport structure (bsc#1182716).
• CVE-2021-20261: Fixed a race condition in the implementation of the floppy disk drive controller driver software (bsc#1183400).
• CVE-2020-36322: Fixed an issue in the FUSE filesystem implementation which could have caused a system crash (bsc#1184211).
• CVE-2020-35519: Fixed an out-of-bounds memory access was found in x25_bind (bsc#1183696).

The following non-security bugs were fixed:

• md: md.c: Return -ENODEV when mddev is NULL in rdev_attr_show (bsc#1056134, bsc#1180963).

Special Instructions and Notes:

• Please reboot the system after installing this update.

Patch Instructions:

To install this SUSE 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 11-SP4
  zypper in -t patch slessp4-kernel-source-14724=1
• SUSE Linux Enterprise Server 11 SP4
  zypper in -t patch slessp4-kernel-source-14724=1

Package List:

• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.126.1
  • kernel-trace-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 s390x x86_64 i586)
  • kernel-default-base-3.0.101-108.126.1
  • kernel-default-devel-3.0.101-108.126.1
  • kernel-trace-devel-3.0.101-108.126.1
  • kernel-trace-base-3.0.101-108.126.1
  • kernel-syms-3.0.101-108.126.1
  • kernel-source-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc x86_64 i586)
  • kernel-ec2-3.0.101-108.126.1
  • kernel-xen-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (x86_64 i586)
  • kernel-xen-base-3.0.101-108.126.1
  • kernel-ec2-base-3.0.101-108.126.1
  • kernel-xen-devel-3.0.101-108.126.1
  • kernel-ec2-devel-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (i586)
  • kernel-pae-devel-3.0.101-108.126.1
  • kernel-pae-base-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 nosrc)
  • kernel-ppc64-3.0.101-108.126.1
  • kernel-bigmem-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64)
  • kernel-bigmem-base-3.0.101-108.126.1
  • kernel-bigmem-devel-3.0.101-108.126.1
  • kernel-ppc64-devel-3.0.101-108.126.1
  • kernel-ppc64-base-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (s390x)
  • kernel-default-man-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.126.1
  • kernel-trace-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 s390x x86_64 i586)
  • kernel-default-base-3.0.101-108.126.1
  • kernel-default-devel-3.0.101-108.126.1
  • kernel-trace-devel-3.0.101-108.126.1
  • kernel-trace-base-3.0.101-108.126.1
  • kernel-syms-3.0.101-108.126.1
  • kernel-source-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64 i586)
  • kernel-ec2-3.0.101-108.126.1
  • kernel-xen-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64 i586)
  • kernel-xen-base-3.0.101-108.126.1
  • kernel-ec2-base-3.0.101-108.126.1
  • kernel-xen-devel-3.0.101-108.126.1
  • kernel-ec2-devel-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (i586)
  • kernel-pae-devel-3.0.101-108.126.1
  • kernel-pae-base-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 nosrc)
  • kernel-ppc64-3.0.101-108.126.1
  • kernel-bigmem-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64)
  • kernel-bigmem-base-3.0.101-108.126.1
  • kernel-bigmem-devel-3.0.101-108.126.1
  • kernel-ppc64-devel-3.0.101-108.126.1
  • kernel-ppc64-base-3.0.101-108.126.1
• SUSE Linux Enterprise Server 11 SP4 (s390x)
  • kernel-default-man-3.0.101-108.126.1

References:

• https://www.suse.com/security/cve/CVE-2020-35519.html
• https://www.suse.com/security/cve/CVE-2020-36322.html
• https://www.suse.com/security/cve/CVE-2021-20261.html
• https://www.suse.com/security/cve/CVE-2021-27363.html
• https://www.suse.com/security/cve/CVE-2021-27364.html
• https://www.suse.com/security/cve/CVE-2021-27365.html
• https://www.suse.com/security/cve/CVE-2021-28950.html
• https://www.suse.com/security/cve/CVE-2021-28972.html
• https://www.suse.com/security/cve/CVE-2021-29650.html
• https://www.suse.com/security/cve/CVE-2021-30002.html
• https://www.suse.com/security/cve/CVE-2021-3483.html
• https://bugzilla.suse.com/show_bug.cgi?id=1056134
• https://bugzilla.suse.com/show_bug.cgi?id=1180963
• https://bugzilla.suse.com/show_bug.cgi?id=1182715
• https://bugzilla.suse.com/show_bug.cgi?id=1182716
• https://bugzilla.suse.com/show_bug.cgi?id=1182717
• https://bugzilla.suse.com/show_bug.cgi?id=1183400
• https://bugzilla.suse.com/show_bug.cgi?id=1183696
• https://bugzilla.suse.com/show_bug.cgi?id=1184120
• https://bugzilla.suse.com/show_bug.cgi?id=1184194
• https://bugzilla.suse.com/show_bug.cgi?id=1184198
• https://bugzilla.suse.com/show_bug.cgi?id=1184208
• https://bugzilla.suse.com/show_bug.cgi?id=1184211
• https://bugzilla.suse.com/show_bug.cgi?id=1184393