RedHat: RHSA-2022-0958:01 Important: kpatch-patch-4_18_0-147_58_1 security
Summary
This is a kernel live patch module which is automatically loaded by the RPM
post-install script to modify the code of a running kernel.
Security Fix(es):
* kernel: Use After Free in unix_gc() which could result in a local
privilege escalation (CVE-2021-0920)
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)
* kernel: fget: check that the fd still exists after getting a ref to it
(CVE-2021-4083)
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
(CVE-2021-4155)
* kernel: possible privileges escalation due to missing TLB flush
(CVE-2022-0330)
* kernel: cgroups v1 release_agent feature may allow privilege escalation
(CVE-2022-0492)
* kernel: failing usercopy allows for use-after-free exploitation
(CVE-2022-22942)
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):
* Several kpatch CVEs needed for kernel-4.18.0-147.58.1.el8_1 (BZ#2064297)
Summary
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
References
https://access.redhat.com/security/cve/CVE-2021-0920 https://access.redhat.com/security/cve/CVE-2021-4028 https://access.redhat.com/security/cve/CVE-2021-4083 https://access.redhat.com/security/cve/CVE-2021-4155 https://access.redhat.com/security/cve/CVE-2022-0330 https://access.redhat.com/security/cve/CVE-2022-0492 https://access.redhat.com/security/cve/CVE-2022-22942 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux BaseOS E4S (v. 8.1):
Source:
kpatch-patch-4_18_0-147_58_1-1-1.el8_1.src.rpm
ppc64le:
kpatch-patch-4_18_0-147_58_1-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_58_1-debuginfo-1-1.el8_1.ppc64le.rpm
kpatch-patch-4_18_0-147_58_1-debugsource-1-1.el8_1.ppc64le.rpm
x86_64:
kpatch-patch-4_18_0-147_58_1-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_58_1-debuginfo-1-1.el8_1.x86_64.rpm
kpatch-patch-4_18_0-147_58_1-debugsource-1-1.el8_1.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
An update for kpatch-patch-4_18_0-147_58_1 is now available for Red HatEnterprise Linux 8.1 Update Services for SAP Solutions.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux BaseOS E4S (v. 8.1) - ppc64le, x86_64
Bugs Fixed
2027201 - CVE-2021-4028 kernel: use-after-free in RDMA listen()
2029923 - CVE-2021-4083 kernel: fget: check that the fd still exists after getting a ref to it
2031930 - CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
2034813 - CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
2042404 - CVE-2022-0330 kernel: possible privileges escalation due to missing TLB flush
2044809 - CVE-2022-22942 kernel: failing usercopy allows for use-after-free exploitation
2051505 - CVE-2022-0492 kernel: cgroups v1 release_agent feature may allow privilege escalation
