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centosCentOS ProjectCESA-2020:5437
HistoryDec 21, 2020 - 8:45 p.m.

bpftool, kernel, perf, python security update

2020-12-2120:45:16
CentOS Project
lists.centos.org
185

7.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:N/AC:M/Au:S/C:P/I:P/A:C

0.004 Low

EPSS

Percentile

71.5%

CentOS Errata and Security Advisory CESA-2020:5437

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: metadata validator in XFS may cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt (CVE-2020-14385)

  • kernel: The flow_dissector feature allows device tracking (CVE-2019-18282)

  • kernel: Buffer over-read in crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned. (CVE-2020-10769)

  • kernel: buffer uses out of index in ext3/4 filesystem (CVE-2020-14314)

  • kernel: umask not applied on filesystem without ACL support (CVE-2020-24394)

  • kernel: TOCTOU mismatch in the NFS client code (CVE-2020-25212)

  • kernel: improper input validation in ppp_cp_parse_cr function leads to memory corruption and read overflow (CVE-2020-25643)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

  • WARNING in set_restore_sigmask at ./arch/x86/include/asm/thread_info.h:298 sigsuspend+0x6d/0x70 (BZ#1704650)

  • [i40e] VFs see other VF’s outgoing traffic (BZ#1845677)

  • [Hyper-V][RHEL7] Two fixes for kdump over network (BZ#1846667)

  • Loop in __run_timers() because base->timer_jiffies is very far behind causes a lockup condition. (BZ#1849716)

  • XFS transaction overrun when running docker on VMWARE (overlay fs) (BZ#1857203)

  • RHEL 7.9 NVMe/IB - Host crash encountered during array upgrade (BZ#1857397)

  • False positive hard lockup detected while disabling the hard lockup detector via sysctl -w kernel.watchdog=0 (BZ#1860661)

  • [Hyper-V][RHEL-7] Only notify Hyper-V for die events that are oops (BZ#1868130)

  • Linux kernel crash due to openvswitch module (BZ#1869190)

  • ‘nodfs’ option not working when using SMB2+ (BZ#1873033)

  • RHEL7.7 zstream - ESS - kernel panic triggered by freelist pointer corruption (BZ#1873189)

  • destroy_cfs_bandwidth() is called by free_fair_sched_group() without calling init_cfs_bandwidth() (BZ#1878000)

  • NULL pointer at nvme_rdma_setup_ctrl+0x1c2/0x8d0 [nvme_rdma] when discover E5700 (BZ#1878950)

  • IB Infiniband RDMA mlx5_ib is freeing a kmalloc-512 cache that it does not own causing memory corruption. (BZ#1880184)

  • [Azure][RHEL7] Two Patches Needed To Enable Azure Host Time-syncing in VMs (BZ#1884735)

  • connect AF_UNSPEC on a connecting AF_INET6 socket returns an error (BZ#1886305)

  • Rebuilding the grub with the CPU flag ‘avx’ disabled (clearcpuid=156) triggers kernel panic in xor_avx_2() (BZ#1886792)

  • nf_conntrack_sctp.h is not usable due to a missing commit (BZ#1887975)

  • Starting pvmove on top of physical volumes on MD devices causes IO error on ongoing IO (BZ#1890059)

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2020-December/086032.html

Affected packages:
bpftool
kernel
kernel-abi-whitelists
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-headers
kernel-tools
kernel-tools-libs
kernel-tools-libs-devel
perf
python-perf

Upstream details at:
https://access.redhat.com/errata/RHSA-2020:5437

7.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

AV:N/AC:M/Au:S/C:P/I:P/A:C

0.004 Low

EPSS

Percentile

71.5%