{"schemaVersion":3,"id":"SUSE-SU-2021:14630-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Security update for the Linux Kernel\n\nThe SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.\n\n\nThe following security bugs were fixed:\n\n\n- CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).\n- CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029).\n- CVE-2020-25211: Fixed a flaw where a local attacker was able to inject conntrack netlink configuration that could cause a denial of service or trigger the use of incorrect protocol numbers in ctnetlink_parse_tuple_filter (bnc#1176395).\n- CVE-2020-14390: Fixed an out-of-bounds memory write leading to memory corruption or a denial of service when changing screen size (bnc#1176235).\n- CVE-2020-25284: Fixed an incomplete permission checking for access to rbd devices, which could have been leveraged by local attackers to map or unmap rbd block devices (bsc#1176482).\n- CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).\n- CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).\n- CVE-2020-14353: Fixed an issue where keys - for keyctl prevent creating a different user's keyrings (bsc#1174993).\n- CVE-2020-14381: Fixed requeue paths such that filp was valid when dropping the references (bsc#1176011).\n- CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds check in the nl80211_policy policy of nl80211.c (bnc#1180086).\n- CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction Services (RTAS) interface, affecting guests running on top of PowerVM or KVM hypervisors (bnc#1179107).\n- CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601).\n- CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).\n- CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745).\n- CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).\n- CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).\n- CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).\n- CVE-2020-25285: A race condition between hugetlb sysctl handlers in mm/hugetlb.c could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact (bnc#1176485 ).\n- CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service (bsc#1179140).\n- CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559).\n- CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink camera USB driver (bnc#1168952).\n- CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123).\n- CVE-2020-4788: Fixed an issue with IBM Power9 processors could have allowed a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances (bsc#1177666).\n- CVE-2020-0431: Fixed an out of bounds write due to a missing bounds check (bsc#1176722).\n- CVE-2020-0404: Fixed a linked list corruption due to an unusual root cause (bsc#1176423).\n- CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663).\n- CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl (bnc#1177766).\n- CVE-2020-25643: Fixed a memory corruption and a read overflow which could have caused by improper input validation in the ppp_cp_parse_cr function (bsc#1177206).\n- CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659).\n\nThe following non-security bugs were fixed:\n\n- HID: Fix slab-out-of-bounds read in hid_field_extract (bsc#1180052).\n- cifs: bugfix for unreclaimed writeback pages in cifs_writev_requeue() (bsc#1177906).\n- mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo (bsc#1175691).\n- net/x25: fix a race in x25_bind() (bsc#1178590).\n- net/x25: prevent a couple of overflows (bsc#1178590).\n- tty: fix memleak in alloc_pid (bsc#1179745).\n- xfs: mark all internal workqueues as freezable 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