QID 174728

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various
security and bugfixes.


The following security bugs were fixed:

- CVE-2020-14331: A buffer over write in vgacon_scroll was fixed
(bnc#1174205).
- CVE-2020-10135: Legacy pairing and secure-connections pairing
authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier
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-2020-0305: 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-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c
where incorrect access permissions for the efivar_ssdt ACPI variable
could be used by attackers to bypass lockdown or secure boot
restrictions, aka CID-1957a85b0032 (bnc#1173567).
- CVE-2020-10781: zram sysfs resource consumption was fixed (bnc#1173074).
- CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c
where injection of malicious ACPI tables via configfs could be used by
attackers to bypass lockdown and secure boot restrictions, aka
CID-75b0cea7bf30 (bnc#1173573).
- CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c had a
memory leak, aka CID-28ebeb8db770 (bnc#1173514).
- CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a
deadlock if a coalescing operation fails (bnc#1171732).
- CVE-2019-16746: net/wireless/nl80211.c did not check the length of
variable elements in a beacon head, leading to a buffer overflow
(bnc#1152107).
- CVE-2020-12888: The VFIO PCI driver mishandled attempts to access
disabled memory space (bnc#1171868).
- CVE-2020-10769: A buffer over-read flaw was found in
crypto_authenc_extractkeys in crypto/authenc.c in the IPsec
Cryptographic algorithm's module, authenc. When a payload longer than 4
bytes, and is not following 4-byte alignment boundary guidelines, it
causes a buffer over-read threat, leading to a system crash. This flaw
allowed a local attacker with user privileges to cause a denial of
service (bnc#1173265).
- 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).

The following non-security bugs were fixed:

- ACPI: GED: add support for _Exx / _Lxx handler methods (bsc#1111666).
- ACPI: GED: use correct trigger type field in _Exx / _Lxx handling
(bsc#1111666).
- ACPI: NFIT: Fix unlock on error in scrub_show() (bsc#1171753).
- ACPI: sysfs: Fix pm_profile_attr type (bsc#1111666).
- ACPI: video: Use native backlight on Acer Aspire 5783z (bsc#1111666).
- ACPI: video: Use native backlight on Acer TravelMate 5735Z (bsc#1111666).
- ALSA: hda - let hs_mic be picked ahead of hp_mic (bsc#1111666).
- ALSA: hda/realtek - Enable Speaker for ASUS UX533 and UX534
(bsc#1111666).
- ALSA: lx6464es - add support for LX6464ESe pci express variant
(bsc#1111666).
- ALSA: opl3: fix infoleak in opl3 (bsc#1111666).
- ALSA: usb-aud

Successful exploitation allows attacker to compromise the system.