Oval Definition:oval:org.opensuse.security:def:59039
Revision Date:2020-12-01Version:1
Title:Security update for the Linux Kernel (Important)
Description:



The SUSE Linux Enterprise 12 SP2 kernel version 4.4.121 was updated to receive various security and bugfixes.

The following security bugs were fixed:

- CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. (bsc#1137586).

- CVE-2019-11478: It was possible to send a crafted sequence of SACKs which would fragment the TCP retransmission queue. A remote attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection.

- CVE-2019-11479: It was possible to send a crafted sequence of SACKs which would fragment the RACK send map. A remote attacker may be able to further exploit the fragmented send map to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. This would have resulted in excess resource consumption due to low mss values.

- CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network. (bnc#1136424)

- CVE-2019-12382: An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel There is an unchecked kstrdup of fwstr, which may have allowed an attacker to cause a denial of service (NULL pointer dereference and system crash). (bnc#1136586)

- CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux kernel allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may have been possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server. (bnc#1120843)

- CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the unused memory region in the extent tree block, which might have allowed local users to obtain sensitive information by reading uninitialized data in the filesystem. (bnc#1135281)

- CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice. This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343. (bnc#1135603)

- CVE-2019-11190: The Linux kernel allowed local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check had a race condition when reading /proc/pid/stat. (bnc#1131543)

- CVE-2019-11815: An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel There was a race condition leading to a use-after-free, related to net namespace cleanup. (bnc#1134537)

- CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel allowed a local user to obtain potentially sensitive information from kernel stack memory via a HIDPCONNADD command, because a name field may not have ended with a '\0' character. (bnc#1134848)

- CVE-2018-17972: An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel It did not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents. (bnc#1110785)

The following non-security bugs were fixed:

- cifs: keep FileInfo handle live during oplock break (bsc#1106284, bsc#1131565). - ftrace/x86_64: Emulate call function while updating in breakpoint handler (bsc#1099658). - kabi: drop LINUX_MIB_TCPWQUEUETOOBIG snmp counter (bsc#1137586). - kabi: move sysctl_tcp_min_snd_mss to preserve struct net layout (bsc#1137586). - mwifiex: Fix heap overflow in mwifiex_uap_parse_tail_ies() (bsc#1136935). - tcp: add tcp_min_snd_mss sysctl (bsc#1137586). - tcp: enforce tcp_min_snd_mss in tcp_mtu_probing() (bsc#1137586). - tcp: limit payload size of sacked skbs (bsc#1137586). - tcp: tcp_fragment() should apply sane memory limits (bsc#1137586). - x86_64: Add gap to int3 to allow for call emulation (bsc#1099658). - x86_64: Allow breakpoints to emulate call instructions (bsc#1099658). - xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent (bnc#1134596). - xen-swiotlb: use actually allocated size on check physical continuous (bnc#1134596).
Family:unixClass:patch
Status:Reference(s):1098998
1099658
1106284
1110785
1113769
1120489
1120843
1120885
1123156
1129186
1131543
1131565
1132374
1132472
1134537
1134596
1134848
1135281
1135603
1136424
1136446
1136586
1136935
1137586
1137597
1140747
1146873
1148987
1149811
1153108
1153332
1154162
1156321
1156331
1157770
1160024
1161066
1163018
1166240
1167068
1168422
1170558
1170940
1171363
1172031
1172225
1173455
682920
CVE-2014-2524
CVE-2016-0772
CVE-2016-5636
CVE-2016-5699
CVE-2018-12359
CVE-2018-12360
CVE-2018-12362
CVE-2018-12363
CVE-2018-12364
CVE-2018-12365
CVE-2018-12366
CVE-2018-12368
CVE-2018-16301
CVE-2018-17972
CVE-2018-20217
CVE-2018-20856
CVE-2018-5156
CVE-2018-5188
CVE-2018-7191
CVE-2019-10220
CVE-2019-11190
CVE-2019-11477
CVE-2019-11478
CVE-2019-11479
CVE-2019-11815
CVE-2019-11833
CVE-2019-11884
CVE-2019-12068
CVE-2019-12382
CVE-2019-13272
CVE-2019-13627
CVE-2019-15165
CVE-2019-15890
CVE-2019-20807
CVE-2019-2974
CVE-2019-3838
CVE-2019-3846
CVE-2019-5489
CVE-2019-6778
CVE-2020-12108
CVE-2020-12137
CVE-2020-15049
CVE-2020-1711
CVE-2020-1983
CVE-2020-3898
CVE-2020-7039
CVE-2020-8608
SUSE-SU-2019:0111-1
SUSE-SU-2019:0719-1
SUSE-SU-2019:1534-1
SUSE-SU-2019:2669-1
SUSE-SU-2020:0050-1
SUSE-SU-2020:1045-1
SUSE-SU-2020:1538-1
SUSE-SU-2020:1550-1
SUSE-SU-2020:1946-1
Platform(s):openSUSE Leap 15.0
openSUSE Leap 15.1
SUSE Linux Enterprise Server 12 SP2-BCL
SUSE Linux Enterprise Server 12 SP2-ESPOS
SUSE Linux Enterprise Server 12 SP2-LTSS
SUSE Linux Enterprise Server 12 SP3
SUSE Linux Enterprise Server 12 SP3-BCL
SUSE Linux Enterprise Server 12 SP3-ESPOS
SUSE Linux Enterprise Server 12 SP3-LTSS
SUSE Linux Enterprise Server 12 SP3-TERADATA
SUSE Linux Enterprise Server 12 SP4
SUSE Linux Enterprise Server 12 SP4-LTSS
SUSE OpenStack Cloud 8
SUSE OpenStack Cloud Crowbar 8
Product(s):
Definition Synopsis
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    • Definition Synopsis
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    • Definition Synopsis
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    • Definition Synopsis
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP3-BCL is installed
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP3-ESPOS is installed
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP3-LTSS is installed
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP3-TERADATA is installed
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP4 is installed
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    • Definition Synopsis
  • SUSE Linux Enterprise Server 12 SP4-LTSS is installed
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    • Definition Synopsis
  • SUSE OpenStack Cloud 8 is installed
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    • Definition Synopsis
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    • BACK