SUSE: 2020:2134-1 important: the Linux Kernel
Summary
The SUSE Linux Enterprise 12 SP2 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2020-10135: Legacy pairing and secure-connections pairing authentication in Bluetooth may have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key (bnc#1171988). - CVE-2020-10711: A NULL pointer dereference flaw was found in the SELinux subsystem. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. This flaw allowed a remote network user to crash the system kernel, resulting in a denial of service (bnc#1171191). - CVE-2020-10751: A flaw was found in the SELinux LSM hook implementation, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing (bnc#1171189). - CVE-2019-20812: An issue was discovered in the prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067 (bnc#1172453). - CVE-2020-10732: A flaw was found in the implementation of userspace core dumps. This flaw allowed an attacker with a local account to crash a trivial program and exfiltrate private kernel data (bnc#1171220). - CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462). - CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a deadlock if a coalescing operation fails (bnc#1171732). - CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999). - CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002). - CVE-2020-10768: Indirect branch speculation could have been enabled after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command. (bnc#1172783). - CVE-2020-10766: Fixed Rogue cross-process SSBD shutdown, where a Linux scheduler logical bug allows an attacker to turn off the SSBD protection. (bnc#1172781). - CVE-2020-10767: Indirect Branch Prediction Barrier was force-disabled when STIBP is unavailable or enhanced IBRS is available. (bnc#1172782). - CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059. (bnc#1172775). - CVE-2019-20810: go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel did not call snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586 (bnc#1172458). The following non-security bugs were fixed: - intel_idle: Graceful probe failure when MWAIT is disabled (bsc#1174115). - x86/dumpstack/64: Handle faults when printing the "Stack: " part of an OOPS (bsc#1170383). - xfs: Fix tail rounding in xfs_alloc_file_space() (bsc#1172049).
References
#1162002 #1170383 #1171189 #1171191 #1171220
#1171732 #1171988 #1172049 #1172453 #1172458
#1172775 #1172781 #1172782 #1172783 #1172999
#1174115 #1174462 #1174543
Cross- CVE-2019-20810 CVE-2019-20812 CVE-2020-0305
CVE-2020-10135 CVE-2020-10711 CVE-2020-10732
CVE-2020-10751 CVE-2020-10766 CVE-2020-10767
CVE-2020-10768 CVE-2020-10773 CVE-2020-12771
CVE-2020-13974 CVE-2020-14416
Affected Products:
SUSE OpenStack Cloud 7
SUSE Linux Enterprise Server for SAP 12-SP2
SUSE Linux Enterprise Server 12-SP2-LTSS
SUSE Linux Enterprise Server 12-SP2-BCL
SUSE Linux Enterprise High Availability 12-SP2
https://www.suse.com/security/cve/CVE-2019-20810.html
https://www.suse.com/security/cve/CVE-2019-20812.html
https://www.suse.com/security/cve/CVE-2020-0305.html
https://www.suse.com/security/cve/CVE-2020-10135.html
https://www.suse.com/security/cve/CVE-2020-10711.html
https://www.suse.com/security/cve/CVE-2020-10732.html
https://www.suse.com/security/cve/CVE-2020-10751.html
https://www.suse.com/security/cve/CVE-2020-10766.html
https://www.suse.com/security/cve/CVE-2020-10767.html
https://www.suse.com/security/cve/CVE-2020-10768.html
https://www.suse.com/security/cve/CVE-2020-10773.html
https://www.suse.com/security/cve/CVE-2020-12771.html
https://www.suse.com/security/cve/CVE-2020-13974.html
https://www.suse.com/security/cve/CVE-2020-14416.html
https://bugzilla.suse.com/1162002
https://bugzilla.suse.com/1170383
https://bugzilla.suse.com/1171189
https://bugzilla.suse.com/1171191
https://bugzilla.suse.com/1171220
https://bugzilla.suse.com/1171732
https://bugzilla.suse.com/1171988
https://bugzilla.suse.com/1172049
https://bugzilla.suse.com/1172453
https://bugzilla.suse.com/1172458
https://bugzilla.suse.com/1172775
https://bugzilla.suse.com/1172781
https://bugzilla.suse.com/1172782
https://bugzilla.suse.com/1172783
https://bugzilla.suse.com/1172999
https://bugzilla.suse.com/1174115
https://bugzilla.suse.com/1174462
https://bugzilla.suse.com/1174543
