Issued:
2020-05-12
Updated:
2020-05-12

RHSA-2020:2104 - Important: kernel-alt security and bug fix update

Synopsis

Important: kernel-alt security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel-alt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

  • kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)

  • kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

  • Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)

  • kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)

  • kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)

  • kernel: denial of service in in xfs_setattr_nonsize in fs/xfs/xfs_iops.c (CVE-2019-15538)

  • kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)

  • kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

  • kernel: out-of-bounds read in set_fdc in drivers/block/floppy.c (CVE-2020-9383)

  • kernel: null pointer dereference in dlpar_parse_cc_property in arch/powerrc/platforms/pseries/dlpar.c causing denial of service (CVE-2019-12614)

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):

  • [7.5-alt][ext4/xfstests generic/468] fix fdatasync(2) after fallocate(2) operation (upstream fixed) [rhel-alt-7.6.z] (BZ#1554273)

  • [RHEL-ALT-7.6.z][arm64] CN99xx: DIMM errors not populated in EDAC sysfs (BZ#1778697)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power 97ppc64le
Red Hat Enterprise Linux for IBM System z (Structure A)7s390x
Red Hat Enterprise Linux for ARM 647aarch64

Updated Packages

  • kernel-debug-debuginfo-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-tools-libs-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debuginfo-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debug-devel-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-debuginfo-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-bootwrapper-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-doc-4.14.0-115.21.2.el7a.noarch.rpm
  • kernel-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-debuginfo-common-s390x-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-headers-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-tools-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-tools-debuginfo-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-tools-libs-devel-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-4.14.0-115.21.2.el7a.aarch64.rpm
  • perf-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-devel-4.14.0-115.21.2.el7a.s390x.rpm
  • perf-debuginfo-4.14.0-115.21.2.el7a.aarch64.rpm
  • perf-debuginfo-4.14.0-115.21.2.el7a.s390x.rpm
  • python-perf-4.14.0-115.21.2.el7a.ppc64le.rpm
  • python-perf-debuginfo-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-headers-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-alt-4.14.0-115.21.2.el7a.src.rpm
  • python-perf-debuginfo-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-devel-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-tools-libs-devel-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debuginfo-common-aarch64-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-tools-4.14.0-115.21.2.el7a.ppc64le.rpm
  • perf-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-tools-libs-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-tools-debuginfo-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debuginfo-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-kdump-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-debug-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debug-devel-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-devel-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debug-devel-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-kdump-debuginfo-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-headers-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debug-debuginfo-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-debug-4.14.0-115.21.2.el7a.ppc64le.rpm
  • kernel-kdump-devel-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-abi-whitelists-4.14.0-115.21.2.el7a.noarch.rpm
  • perf-debuginfo-4.14.0-115.21.2.el7a.ppc64le.rpm
  • python-perf-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-4.14.0-115.21.2.el7a.ppc64le.rpm
  • perf-4.14.0-115.21.2.el7a.ppc64le.rpm
  • python-perf-debuginfo-4.14.0-115.21.2.el7a.aarch64.rpm
  • python-perf-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-debug-debuginfo-4.14.0-115.21.2.el7a.aarch64.rpm
  • kernel-debug-4.14.0-115.21.2.el7a.s390x.rpm
  • kernel-debuginfo-common-ppc64le-4.14.0-115.21.2.el7a.ppc64le.rpm

Fixes

CVEs

References

Additional information