RHSA-2020:1493 - Security Advisory

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: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c (CVE-2019-14895)
• kernel: heap overflow in marvell/mwifiex/tdls.c (CVE-2019-14901)
• kernel: triggering AP to send IAPP location updates for stations before the required authentication process has completed can lead to DoS (CVE-2019-5108)
• kernel: powerpc: local user can read vector registers of other users' processes via an interrupt (CVE-2019-15031)
• kernel: out-of-bounds array access in __xfrm_policy_unlink (CVE-2019-15666)
• kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash (CVE-2019-15099)
• kernel: when cpu.cfs_quota_us is used allows attackers to cause a denial of service against non-cpu-bound applications (CVE-2019-19922)
• kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c (CVE-2019-20054)
• kernel: memory leak in mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c (CVE-2019-20095)

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):

• rhel-alt-76z bsd process accounting(acct(2)) does not work (BZ#1763618)

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

• Red Hat Enterprise Linux for ARM 64 7 aarch64
• Red Hat Enterprise Linux for Power 9 7 ppc64le
• Red Hat Enterprise Linux for IBM System z (Structure A) 7 s390x

Fixes

• BZ - 1743560 - CVE-2019-15099 kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash
• BZ - 1747334 - CVE-2019-15666 kernel: out-of-bounds array access in __xfrm_policy_unlink
• BZ - 1760063 - CVE-2019-15031 kernel: powerpc: local user can read vector registers of other users' processes via an interrupt
• BZ - 1773519 - CVE-2019-14901 kernel: heap overflow in marvell/mwifiex/tdls.c
• BZ - 1774870 - CVE-2019-14895 kernel: heap-based buffer overflow in mwifiex_process_country_ie() function in drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
• BZ - 1789927 - CVE-2019-5108 kernel: triggering AP to send IAPP location updates for stations before the required authentication process has completed can lead to DoS
• BZ - 1790063 - CVE-2019-20054 kernel: Null pointer dereference in drop_sysctl_table() in fs/proc/proc_sysctl.c
• BZ - 1791954 - CVE-2019-20095 kernel: memory leak in mwifiex_tm_cmd in drivers/net/wireless/marvell/mwifiex/cfg80211.c
• BZ - 1792512 - CVE-2019-19922 kernel: when cpu.cfs_quota_us is used allows attackers to cause a denial of service against non-cpu-bound applications

CVEs

• CVE-2019-5108
• CVE-2019-14895
• CVE-2019-14901
• CVE-2019-15031
• CVE-2019-15099
• CVE-2019-15666
• CVE-2019-19922
• CVE-2019-20054
• CVE-2019-20095

References

• https://access.redhat.com/security/updates/classification/#important