Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2021:14764-1
Rating:	important
References:	bsc#1184081 bsc#1184391 bsc#1184611 bsc#1185859 bsc#1185861 bsc#1185862 bsc#1185863 bsc#1186062 bsc#1187038 bsc#1187452 bsc#1187595
Cross-References:	CVE-2020-24586 CVE-2020-24587 CVE-2020-24588 CVE-2020-26139 CVE-2020-36386 CVE-2021-0512 CVE-2021-29154 CVE-2021-32399 CVE-2021-34693
CVSS scores:	CVE-2020-24586 ( SUSE ): 4.7 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N CVE-2020-24586 ( NVD ): 3.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVE-2020-24587 ( SUSE ): 4.2 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-24587 ( NVD ): 2.6 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CVE-2020-24588 ( SUSE ): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVE-2020-24588 ( NVD ): 3.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVE-2020-26139 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-26139 ( NVD ): 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-36386 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVE-2020-36386 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVE-2021-0512 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2021-0512 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-29154 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-29154 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-32399 ( SUSE ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2021-32399 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-34693 ( SUSE ): 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2021-34693 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products:	SUSE Linux Enterprise Server 11 SP4 SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4

An update that solves nine 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-2021-0512: Fixed a possible out of bounds write due to a heap buffer overflow in __hidinput_change_resolution_multipliers. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (bsc#1187595)
• CVE-2021-34693: Fixed a bug in net/can/bcm.c which could allow local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized. (bsc#1187452)
• CVE-2020-36386: Fixed an out-of-bounds read in hci_extended_inquiry_result_evt. (bsc#1187038)
• CVE-2020-24588: Fixed a bug that could allow an adversary to abuse devices that support receiving non-SSP A-MSDU frames to inject arbitrary network packets. (bsc#1185861 bsc#1185863)
• CVE-2021-29154: Fixed an incorrect computation of branch displacements in the BPF JIT compilers, which could allow to execute arbitrary code within the kernel context. (bsc#1184391)
• CVE-2021-32399: Fixed a race condition in net/bluetooth/hci_request.c for removal of the HCI controller. (bsc#1184611)
• CVE-2020-24586: Fixed a bug that, under the right circumstances, allows to inject arbitrary network packets and/or exfiltrate user data when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP. (bsc#1185859 bsc#1185863)
• CVE-2020-26139: Fixed a bug that allows an Access Point (AP) to forward EAPOL frames to other clients even though the sender has not yet successfully authenticated. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and made it easier to exploit other vulnerabilities in connected clients. (bsc#1185863 bsc#1186062)
• CVE-2020-24587: Fixed a bug that allows an adversary to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed. (bsc#1185862 bsc#1185863)

The following non-security bugs were fixed:

• md: do not flush workqueue unconditionally in md_open (bsc#1184081).
• md: factor out a mddev_find_locked helper from mddev_find (bsc#1184081).
• md: md_open returns -EBUSY when entering racing area (bsc#1184081).
• md: split mddev_find (bsc#1184081).

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-14764=1
• SUSE Linux Enterprise Server 11 SP4
  zypper in -t patch slessp4-kernel-source-14764=1

Package List:

• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.129.1
  • kernel-trace-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 s390x x86_64 i586)
  • kernel-trace-devel-3.0.101-108.129.1
  • kernel-default-devel-3.0.101-108.129.1
  • kernel-source-3.0.101-108.129.1
  • kernel-default-base-3.0.101-108.129.1
  • kernel-trace-base-3.0.101-108.129.1
  • kernel-syms-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc x86_64 i586)
  • kernel-xen-3.0.101-108.129.1
  • kernel-ec2-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (x86_64 i586)
  • kernel-ec2-devel-3.0.101-108.129.1
  • kernel-xen-devel-3.0.101-108.129.1
  • kernel-xen-base-3.0.101-108.129.1
  • kernel-ec2-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (i586)
  • kernel-pae-devel-3.0.101-108.129.1
  • kernel-pae-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64 nosrc)
  • kernel-bigmem-3.0.101-108.129.1
  • kernel-ppc64-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (ppc64)
  • kernel-bigmem-base-3.0.101-108.129.1
  • kernel-bigmem-devel-3.0.101-108.129.1
  • kernel-ppc64-devel-3.0.101-108.129.1
  • kernel-ppc64-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 LTSS 11-SP4 (s390x)
  • kernel-default-man-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 nosrc)
  • kernel-default-3.0.101-108.129.1
  • kernel-trace-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 s390x x86_64 i586)
  • kernel-trace-devel-3.0.101-108.129.1
  • kernel-default-devel-3.0.101-108.129.1
  • kernel-source-3.0.101-108.129.1
  • kernel-default-base-3.0.101-108.129.1
  • kernel-trace-base-3.0.101-108.129.1
  • kernel-syms-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64 i586)
  • kernel-xen-3.0.101-108.129.1
  • kernel-ec2-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64 i586)
  • kernel-ec2-devel-3.0.101-108.129.1
  • kernel-xen-devel-3.0.101-108.129.1
  • kernel-xen-base-3.0.101-108.129.1
  • kernel-ec2-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc i586)
  • kernel-pae-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (i586)
  • kernel-pae-devel-3.0.101-108.129.1
  • kernel-pae-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64 nosrc)
  • kernel-bigmem-3.0.101-108.129.1
  • kernel-ppc64-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (ppc64)
  • kernel-bigmem-base-3.0.101-108.129.1
  • kernel-bigmem-devel-3.0.101-108.129.1
  • kernel-ppc64-devel-3.0.101-108.129.1
  • kernel-ppc64-base-3.0.101-108.129.1
• SUSE Linux Enterprise Server 11 SP4 (s390x)
  • kernel-default-man-3.0.101-108.129.1

References:

• https://www.suse.com/security/cve/CVE-2020-24586.html
• https://www.suse.com/security/cve/CVE-2020-24587.html
• https://www.suse.com/security/cve/CVE-2020-24588.html
• https://www.suse.com/security/cve/CVE-2020-26139.html
• https://www.suse.com/security/cve/CVE-2020-36386.html
• https://www.suse.com/security/cve/CVE-2021-0512.html
• https://www.suse.com/security/cve/CVE-2021-29154.html
• https://www.suse.com/security/cve/CVE-2021-32399.html
• https://www.suse.com/security/cve/CVE-2021-34693.html
• https://bugzilla.suse.com/show_bug.cgi?id=1184081
• https://bugzilla.suse.com/show_bug.cgi?id=1184391
• https://bugzilla.suse.com/show_bug.cgi?id=1184611
• https://bugzilla.suse.com/show_bug.cgi?id=1185859
• https://bugzilla.suse.com/show_bug.cgi?id=1185861
• https://bugzilla.suse.com/show_bug.cgi?id=1185862
• https://bugzilla.suse.com/show_bug.cgi?id=1185863
• https://bugzilla.suse.com/show_bug.cgi?id=1186062
• https://bugzilla.suse.com/show_bug.cgi?id=1187038
• https://bugzilla.suse.com/show_bug.cgi?id=1187452
• https://bugzilla.suse.com/show_bug.cgi?id=1187595