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SUSE: 2021:2406-1 Important: Local Privilege Escalation Threats

An update that solves 20 vulnerabilities and has four fixes is now available. . SUSE Security Update: Security update for the Linux Kernel ______________________________________________________________________________ Announcement ID: SUSE-SU-2021:2406-1 Rating: important References: #1179610 #1180846 #1184611 #1185859 #1185860 #1185861 #1185862 #1185863 #1185898 #1185987 #1186060 #1186062 #1186111 #1186390 #1186463 #1187038 #1187050 #1187215 #1187452 #1187595 #1187601 #1187934 #1188062 #1188116 Cross-References: CVE-2020-24586 CVE-2020-24587 CVE-2020-24588 CVE-2020-26139 CVE-2020-26141 CVE-2020-26145 CVE-2020-26147 CVE-2020-26558 CVE-2020-36385 CVE-2020-36386 CVE-2021-0129 CVE-2021-0512 CVE-2021-0605 CVE-2021-22555 CVE-2021-23134 CVE-2021-32399 CVE-2021-33034 CVE-2021-33909 CVE-2021-34693 CVE-2021-3609 CVSS scores: 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-2020-24586 (SUSE): 4.7 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N CVE-2020-24587 (NVD) : 2.6 CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CVE-2020-24587 (SUSE): 4.2 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-24588 (NVD) : 3.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N CVE-2020-24588 (SUSE): 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVE-2020-26139 (NVD) : 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2020-26139 (SUSE): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2020-26141 (SUSE): 4.2 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-26145 (SUSE): 5.4 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-26147 (NVD) : 5.4CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N CVE-2020-26558 (NVD) : 4.2 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-26558 (SUSE): 4.2 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2020-36385 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2020-36385 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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-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-2021-0129 (NVD) : 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2021-0129 (SUSE): 6.4 CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N 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-2021-0605 (NVD) : 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2021-0605 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2021-22555 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-22555 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-23134 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-23134 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-32399 (NVD) : 7 CVSS:3.1/AV:L/AC:H/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-2021-33034 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2021-33034 (SUSE): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H CVE-2021-33909 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/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-2021-3609 (SUSE): 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Affected Products: SUSE Linux Enterprise Server 12-SP2-BCL ______________________________________________________________________________ An update that solves 20 vulnerabilities and has four fixes is now available. Description: The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116) - CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to obtain full root privileges. (bsc#1188062) - CVE-2021-3609: Fixed a race condition in the CAN BCM networking protocol which allows for local privilege escalation. (bsc#1187215) - CVE-2021-0605: Fixed an out-of-bounds read which could lead to local information disclosure in the kernel with System execution privileges needed. (bsc#1187601) - CVE-2021-0512: Fixed a possible out-of-bounds write which could lead to local escalation of privilege with no additional execution privileges needed. (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-2020-36385: Fixed a use-after-free flaw in ucma.c which allows for local privilege escalation. (bsc#1187050) - CVE-2021-0129: Fixed an improper access control in BlueZ that may have allowed an authenticated user to potentially enable information disclosure via adjacent access. (bsc#1186463) - CVE-2020-26558: Fixed a flaw in the Bluetooth LE and BR/EDR secure pairing that could permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing. (bsc#1179610) - 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) - CVE-2021-32399: Fixed a race condition in net/bluetooth/hci_request.c for removal of the HCI controller. (bsc#1184611) - CVE-2021-33034: Fixed an issue in net/bluetooth/hci_event.c where a use-after-free leads to writing an arbitrary value. (bsc#1186111) - 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#1186062) - CVE-2021-23134: Fixed a use After Free vulnerability in nfc sockets which allows local attackers to elevate their privileges. (bsc#1186060) - 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) - CVE-2020-26141: Fixed a flaw that could allows an adversary to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol. (bsc#1185987) - CVE-2020-26145: Fixed a bug in the WEP, WPA, WPA2, and WPA3 implementations that could allows an adversary to inject arbitrary network packets. (bsc#1185860) - 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) - CVE-2020-26147: Fixed a bug in the WEP, WPA, WPA2, and WPA3 implementations that could allows an adversary to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames. (bsc#1185987) The following non-security bugs were fixed: - kABI: Fix kABI after modifying struct __call_single_data (bsc#1180846). - kernel/smp: add boot parameter for controlling CSD lock debugging (bsc#1180846). - kernel/smp: Add source and destination CPUs to __call_single_data (bsc#1180846). - kernel/smp: make csdlock timeout depend on boot parameter (bsc#1180846). - kernel/smp: Provide CSD lock timeout diagnostics (bsc#1180846). - Update config files: activate CONFIG_CSD_LOCK_WAIT_DEBUG for x86 (bsc#1180846). - Update config files: disable CONFIG_CSD_LOCK_WAIT_DEBUG (bsc#1180846). 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 12-SP2-BCL: zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2021-2406=1 Package List: - SUSE Linux Enterprise Server 12-SP2-BCL (noarch): kernel-devel-4.4.121-92.158.1 kernel-macros-4.4.121-92.158.1 kernel-source-4.4.121-92.158.1 - SUSE Linux Enterprise Server 12-SP2-BCL (x86_64): kernel-default-4.4.121-92.158.1 kernel-default-base-4.4.121-92.158.1 kernel-default-base-debuginfo-4.4.121-92.158.1 kernel-default-debuginfo-4.4.121-92.158.1 kernel-default-debugsource-4.4.121-92.158.1 kernel-default-devel-4.4.121-92.158.1 kernel-syms-4.4.121-92.158.1 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-2020-26141.html https://www.suse.com/security/cve/CVE-2020-26145.html https://www.suse.com/security/cve/CVE-2020-26147.html https://www.suse.com/security/cve/CVE-2020-26558.html https://www.suse.com/security/cve/CVE-2020-36385.html https://www.suse.com/security/cve/CVE-2020-36386.html https://www.suse.com/security/cve/CVE-2021-0129.html https://www.suse.com/security/cve/CVE-2021-0512.html https://www.suse.com/security/cve/CVE-2021-0605.html https://www.suse.com/security/cve/CVE-2021-22555.html https://www.suse.com/security/cve/CVE-2021-23134.html https://www.suse.com/security/cve/CVE-2021-32399.html https://www.suse.com/security/cve/CVE-2021-33034.html https://www.suse.com/security/cve/CVE-2021-33909.html https://www.suse.com/security/cve/CVE-2021-34693.html https://www.suse.com/security/cve/CVE-2021-3609.html https://bugzilla.suse.com/1179610 https://bugzilla.suse.com/1180846 https://bugzilla.suse.com/1184611 https://bugzilla.suse.com/1185859 https://bugzilla.suse.com/1185860 https://bugzilla.suse.com/1185861 https://bugzilla.suse.com/1185862 https://bugzilla.suse.com/1185863 https://bugzilla.suse.com/1185898 https://bugzilla.suse.com/1185987 https://bugzilla.suse.com/1186060 https://bugzilla.suse.com/1186062 https://bugzilla.suse.com/1186111 https://bugzilla.suse.com/1186390 https://bugzilla.suse.com/1186463 https://bugzilla.suse.com/1187038 https://bugzilla.suse.com/1187050 https://bugzilla.suse.com/1187215 https://bugzilla.suse.com/1187452 https://bugzilla.suse.com/1187595 https://bugzilla.suse.com/1187601 https://bugzilla.suse.com/1187934 https://bugzilla.suse.com/1188062 https://bugzilla.suse.com/1188116 . Crucial security patch released for SUSE Linux Kernel tackling various privilege escalation vulnerabilities and out-of-bounds errors.. SUSE Linux Kernel Update, Local Privilege Escalation, Security Fixes, Linux Kernel Security. . LinuxSecurity.com Team

Jul 20, 2021 SuSE