SUSE-SU-2020:2106-1

SUSE-SU-2020:2106-1 · Security update for the Linux Kernel

This page contains facts from public vulnerability sources. Check the original advisory before updating.

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

The SUSE Linux Enterprise 15 GA LTSS kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - 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-2020-15780: 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 has a deadlock if a coalescing operation fails (bnc#1171732). - CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c which did not check the length of variable elements in a beacon head, leading to a buffer overflow (bnc#1152107 1173659). - 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). - 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). The following non-security bugs were fixed: - Merge ibmvnic reset fixes (bsc#1158755 ltc#182094). - block, bfq: add requeue-request hook (bsc#1104967 bsc#1171673). - block, bfq: postpone rq preparation to insert or merge (bsc#1104967 bsc#1171673). - ibmvnic: Do not process device remove during device reset (bsc#1065729). - ibmvnic: Flush existing work items before device removal (bsc#1065729). - ibmvnic: Harden device login requests (bsc#1170011 ltc#183538). - ibmvnic: Skip fatal error reset after passive init (bsc#1171078 ltc#184239). - ibmvnic: continue to init in CRQ reset returns H_CLOSED (bsc#1173280 ltc#185369). - intel_idle: Graceful probe failure when MWAIT is disabled (bsc#1174115). - livepatch: Apply vmlinux-specific KLP relocations early (bsc#1071995). - livepatch: Disallow vmlinux.ko (bsc#1071995). - livepatch: Make klp_apply_object_relocs static (bsc#1071995). - livepatch: Prevent module-specific KLP rela sections from referencing vmlinux symbols (bsc#1071995). - livepatch: Remove .klp.arch (bsc#1071995). - vfio/pci: Fix SR-IOV VF handling with MMIO blocking (bsc#1051510). - vfio/pci: Fix SR-IOV VF handling with MMIO blocking (bsc#1174000). - vfio/pci: Mask buggy SR-IOV VF INTx support (bsc#1051510). - vfio/pci: Mask buggy SR-IOV VF INTx support (bsc#1173999). - x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned (bsc#1172257).

Fix available

Published

2020-08-03T14:44:03Z

Updated

2025-05-02T04:08:59.421608Z

Stack: system

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