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SUSE-SU-2021:14630-1

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SUSE-SU-2021:14630-1

Published: 16 Feb 2021Last Modified: 4 Feb 2026

Upstream:

Aliases:

Summary: Security update for the Linux Kernel

Details: The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed: - 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). - CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c that could have led to local privilege escalation (bnc#1180029). - 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). - 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). - 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). - 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). - CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205). - CVE-2020-14353: Fixed an issue where keys - for keyctl prevent creating a different user's keyrings (bsc#1174993). - CVE-2020-14381: Fixed requeue paths such that filp was valid when dropping the references (bsc#1176011). - 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). - 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). - CVE-2020-27786: Fixed an out-of-bounds write in the MIDI implementation (bnc#1179601). - CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that may have allowed a read-after-free attack against TIOCGSID (bnc#1179745). - CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed a use-after-free attack against TIOCSPGRP (bsc#1179745). - 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). - 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). - CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182). - 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 ). - CVE-2020-15437: Fixed a null pointer dereference which could have allowed local users to cause a denial of service (bsc#1179140). - CVE-2020-36158: Fixed a potential remote code execution in the Marvell mwifiex driver (bsc#1180559). - CVE-2020-11668: Fixed the mishandling of invalid descriptors in the Xirlink camera USB driver (bnc#1168952). - CVE-2020-25668: Fixed a use-after-free in con_font_op() (bsc#1178123). - 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). - CVE-2020-0431: Fixed an out of bounds write due to a missing bounds check (bsc#1176722). - CVE-2020-0404: Fixed a linked list corruption due to an unusual root cause (bsc#1176423). - CVE-2019-20934: Fixed a use-after-free in show_numa_stats() because NUMA fault statistics were inappropriately freed (bsc#1179663). - CVE-2020-25656: Fixed a concurrency use-after-free in vt_do_kdgkb_ioctl (bnc#1177766). - 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). - CVE-2019-16746: Fixed a buffer overflow in net/wireless/nl80211.c (bsc#1173659). The following non-security bugs were fixed: - HID: Fix slab-out-of-bounds read in hid_field_extract (bsc#1180052). - cifs: bugfix for unreclaimed writeback pages in cifs_writev_requeue() (bsc#1177906). - mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo (bsc#1175691). - net/x25: fix a race in x25_bind() (bsc#1178590). - net/x25: prevent a couple of overflows (bsc#1178590). - tty: fix memleak in alloc_pid (bsc#1179745). - xfs: mark all internal workqueues as freezable (bsc#1181166).

Affected packages

Package

Name: kernel-bigmem

Purl: pkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS

Affected ranges

Type: ECOSYSTEM

Events:

Introduced- 0

Fixed -3.0.101-108.120.1

Affected versions

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High