RHSA-2022:0063 - 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 Moderate. 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: perf_event_parse_addr_filter memory (CVE-2020-25704)
• kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations (CVE-2020-36322)
• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

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):

• A gfs2 withdrawal occurs function = gfs2_setbit, file = fs/gfs2/rgrp.c, line = 109 (BZ#1364234)
• i40e SR-IOV TX driver issue detected on VF 7 - VF connectivity loose after VF down/up (BZ#1977246)
• duplicate ACK not sent when expected (BZ#1990665)
• [kernel-debug] BUG: bad unlock balance detected! when running LTP read_all (BZ#2006536)
• Rudimentary support for AMD Milan - Call init_amd_zn() om Family 19h processors (BZ#2019218)
• A VM with <=8 CPUs handles all the Mellanox NIC interrupts on CPU0 only, causing low performance (BZ#2019272)
• fix _PSD override quirk for AMD family 19h+ (BZ#2019588)
• generic_file_aio_read returns 0 when interrupted early with a fatal signal (BZ#2020857)

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 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 - 1895961 - CVE-2020-25704 kernel: perf_event_parse_addr_filter memory
• BZ - 1949560 - CVE-2020-36322 kernel: fuse: fuse_do_getattr() calls make_bad_inode() in inappropriate situations
• BZ - 1951739 - CVE-2021-42739 kernel: Heap buffer overflow in firedtv driver
• BZ - 2020857 - generic_file_aio_read returns 0 when interrupted early with a fatal signal [rhel-7.9.z]

CVEs

• CVE-2020-25704
• CVE-2020-36322
• CVE-2021-42739

References

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