RHSA-2020:3220 - Security Advisory

Topic

An update for kernel 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 packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)
• kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)
• kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)
• kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver (CVE-2019-19527)

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):

• RHEL7.7 - scsi: ibmvfc: Avoid loss of all paths during SVC node reboot (BZ#1830889)
• [DELL EMC 7.8 BUG bnxt_en] Error messages related to hwrm observed for BCM 57504 under dmesg in RHEL 7.8 (BZ#1834190)
• kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address CVE-2020-10713) (BZ#1837429)
• RHEL7.7 - Request: retrofit kernel commit f82b4b6 to RHEL 7.7/7.8 3.10 kernels. (BZ#1838602)
• kipmi thread high CPU consumption when performing BMC firmware upgrade (BZ#1841825)
• RHEL7.7 - virtio-blk: fix hw_queue stopped on arbitrary error (kvm) (BZ#1842994)
• rhel 7 infinite blocked waiting on inode_dio_wait in nfs (BZ#1845520)
• http request is taking more time for endpoint running on different host via nodeport service (BZ#1847333)
• ext4: change LRU to round-robin in extent status tree shrinker (BZ#1847343)
• libaio is returning duplicate events (BZ#1850055)
• After upgrade to 3.9.89 pod containers with CPU limits fail to start due to cgroup error (BZ#1850500)
• Fix dpdk regression introduced by bz1837297 (BZ#1852245)

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 Server 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Virtualization Host 4 for RHEL 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1783498 - CVE-2019-19527 kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver
• BZ - 1831868 - CVE-2020-12653 kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in drivers/net/wireless/marvell/mwifiex/scan.c
• BZ - 1832530 - CVE-2020-12654 kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in drivers/net/wireless/marvell/mwifiex/wmm.c
• BZ - 1842525 - CVE-2020-10757 kernel: kernel: DAX hugepages not considered during mremap

CVEs

• CVE-2019-0136
• CVE-2019-19527
• CVE-2020-10757
• CVE-2020-12653
• CVE-2020-12654

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/security/vulnerabilities/grub2bootloader