Issued:
2020-07-07
Updated:
2020-07-07

RHSA-2020:2854 - 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: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

  • Kernel: ppc: kvm: conflicting use of HSTATE_HOST_R1 to store r1 state leads to host stack corruption (CVE-2020-8834)

  • Kernel: vfio: access to disabled MMIO space of some devices may lead to DoS scenario (CVE-2020-12888)

  • kernel: use after free due to race condition in the video driver leads to local privilege escalation (CVE-2019-9458)

  • kernel: use-after-free in drivers/char/ipmi/ipmi_si_intf.c, ipmi_si_mem_io.c, ipmi_si_port_io.c (CVE-2019-11811)

  • kernel: use-after-free in drivers/bluetooth/hci_ldisc.c (CVE-2019-15917)

  • kernel: memory leak in ccp_run_sha_cmd() function in drivers/crypto/ccp/ccp-ops.c (CVE-2019-18808)

  • kernel: use-after-free in __ext4_expand_extra_isize and ext4_xattr_set_entry related to fs/ext4/inode.c and fs/ext4/super.c (CVE-2019-19767)

  • kernel: an out-of-bounds write via crafted keycode table (CVE-2019-20636)

  • kernel: use-after-free read in napi_gro_frags() in the Linux kernel (CVE-2020-10720)

  • kernel: out-of-bounds write in mpol_parse_str function in mm/mempolicy.c (CVE-2020-11565)

  • kernel: A memory leak in the crypto_report() function in crypto/crypto_user_base.c allows for a DoS (CVE-2019-19062)

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):

  • XFS: Metadata corruption detected at xfs_attr3_leaf_read_verify [rhel-alt-7.6.z] (BZ#1830836)

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-headers-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-debuginfo-common-ppc64le-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-libs-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-tools-libs-devel-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debuginfo-common-s390x-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-headers-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-4.14.0-115.26.1.el7a.s390x.rpm
  • perf-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-debuginfo-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debuginfo-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-devel-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-devel-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-debug-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-debug-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debuginfo-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-debuginfo-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-kdump-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-4.14.0-115.26.1.el7a.aarch64.rpm
  • perf-debuginfo-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-devel-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-debuginfo-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-libs-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-doc-4.14.0-115.26.1.el7a.noarch.rpm
  • python-perf-4.14.0-115.26.1.el7a.aarch64.rpm
  • python-perf-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-bootwrapper-4.14.0-115.26.1.el7a.ppc64le.rpm
  • python-perf-debuginfo-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debuginfo-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-kdump-debuginfo-4.14.0-115.26.1.el7a.s390x.rpm
  • perf-4.14.0-115.26.1.el7a.ppc64le.rpm
  • perf-debuginfo-4.14.0-115.26.1.el7a.ppc64le.rpm
  • perf-debuginfo-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-headers-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-debuginfo-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-devel-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-alt-4.14.0-115.26.1.el7a.src.rpm
  • perf-4.14.0-115.26.1.el7a.s390x.rpm
  • python-perf-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-debuginfo-common-aarch64-4.14.0-115.26.1.el7a.aarch64.rpm
  • kernel-debug-debuginfo-4.14.0-115.26.1.el7a.ppc64le.rpm
  • python-perf-debuginfo-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-tools-libs-devel-4.14.0-115.26.1.el7a.ppc64le.rpm
  • kernel-devel-4.14.0-115.26.1.el7a.aarch64.rpm
  • python-perf-debuginfo-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-kdump-devel-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-debug-devel-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-4.14.0-115.26.1.el7a.s390x.rpm
  • kernel-abi-whitelists-4.14.0-115.26.1.el7a.noarch.rpm

Fixes

CVEs

References

Additional information