—–BEGIN PGP SIGNED MESSAGE—–
\nHash: SHA256<\/p>\n
=====================================================================
\nRed Hat Security Advisory<\/p>\n
Synopsis: Important: kernel-rt security and bug fix update
\nAdvisory ID: RHSA-2022:0629-01
\nProduct: Red Hat Enterprise Linux
\nAdvisory URL: https:\/\/access.redhat.com\/errata\/RHSA-2022:0629
\nIssue date: 2022-02-22
\nCVE Names: CVE-2021-0920 CVE-2021-4028 CVE-2021-4155
\n=====================================================================<\/p>\n
1. Summary:<\/p>\n
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2
\nExtended Update Support.<\/p>\n
Red Hat Product Security has rated this update as having a security impact
\nof Important. A Common Vulnerability Scoring System (CVSS) base score,
\nwhich gives a detailed severity rating, is available for each vulnerability
\nfrom the CVE link(s) in the References section.<\/p>\n
2. Relevant releases\/architectures:<\/p>\n
Red Hat Enterprise Linux Real Time EUS (v. 8.2) – x86_64
\nRed Hat Enterprise Linux Real Time for NFV EUS (v. 8.2) – x86_64<\/p>\n
3. Description:<\/p>\n
The kernel-rt packages provide the Real Time Linux Kernel, which enables
\nfine-tuning for systems with extremely high determinism requirements.<\/p>\n
Security Fix(es):<\/p>\n
* kernel: Use After Free in unix_gc() which could result in a local
\nprivilege escalation (CVE-2021-0920)<\/p>\n
* kernel: use-after-free in RDMA listen() (CVE-2021-4028)<\/p>\n
* kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL
\n(CVE-2021-4155)<\/p>\n
For more details about the security issue(s), including the impact, a CVSS
\nscore, acknowledgments, and other related information, refer to the CVE
\npage(s) listed in the References section.<\/p>\n
Bug Fix(es):<\/p>\n
* kernnel-rt-debug: do not call blocking ops when !TASK_RUNNING; state=1
\nset at [<0000000050e86018>] handle_userfault+0x530\/0x1820 (BZ#2029420)<\/p>\n
* kernel-rt: update RT source tree to the latest RHEL-8.2.z15 Batch
\n(BZ#2046275)<\/p>\n
4. Solution:<\/p>\n
For details on how to apply this update, which includes the changes
\ndescribed in this advisory, refer to:<\/p>\n
https:\/\/access.redhat.com\/articles\/11258<\/p>\n
The system must be rebooted for this update to take effect.<\/p>\n
5. Bugs fixed (https:\/\/bugzilla.redhat.com\/):<\/p>\n
2027201 – CVE-2021-4028 kernel: use-after-free in RDMA listen()
\n2031930 – CVE-2021-0920 kernel: Use After Free in unix_gc() which could result in a local privilege escalation
\n2034813 – CVE-2021-4155 kernel: xfs: raw block device data leak in XFS_IOC_ALLOCSP IOCTL<\/p>\n
6. Package List:<\/p>\n
Red Hat Enterprise Linux Real Time for NFV EUS (v. 8.2):<\/p>\n
Source:
\nkernel-rt-4.18.0-193.75.1.rt13.125.el8_2.src.rpm<\/p>\n
x86_64:
\nkernel-rt-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-kvm-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debuginfo-common-x86_64-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-kvm-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm<\/p>\n
Red Hat Enterprise Linux Real Time EUS (v. 8.2):<\/p>\n
Source:
\nkernel-rt-4.18.0-193.75.1.rt13.125.el8_2.src.rpm<\/p>\n
x86_64:
\nkernel-rt-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-core-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debug-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debuginfo-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-debuginfo-common-x86_64-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-devel-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-modules-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm
\nkernel-rt-modules-extra-4.18.0-193.75.1.rt13.125.el8_2.x86_64.rpm<\/p>\n
These packages are GPG signed by Red Hat for security. Our key and
\ndetails on how to verify the signature are available from
\nhttps:\/\/access.redhat.com\/security\/team\/key\/<\/p>\n
7. References:<\/p>\n
https:\/\/access.redhat.com\/security\/cve\/CVE-2021-0920
\nhttps:\/\/access.redhat.com\/security\/cve\/CVE-2021-4028
\nhttps:\/\/access.redhat.com\/security\/cve\/CVE-2021-4155
\nhttps:\/\/access.redhat.com\/security\/updates\/classification\/#important<\/p>\n
8. Contact:<\/p>\n
The Red Hat security contact is <secalert@redhat.com>. More contact
\ndetails at https:\/\/access.redhat.com\/security\/team\/contact\/<\/p>\n
Copyright 2022 Red Hat, Inc.
\n—–BEGIN PGP SIGNATURE—–
\nVersion: GnuPG v1<\/p>\n
iQIVAwUBYhVgftzjgjWX9erEAQhgvw\/\/QZKmkJBxJlqSE34qks2lI+Q56kAulhzW
\na9JUC+qMe\/Zo\/OtlCArzV6MGAGpmNfT2MMKTYmrwT8qwMDIzCXpnm6WY8nPJYzhl
\nS5p\/5vSwIDUK3t76agWAl\/AGbqT9uWa\/srYfPIomy3gwiZMhn5ojZjCyJvU8ezt6
\nhaPHaxa+pLKN+NL9MN53g79bY+BYp24BwSK7pHUnp8w\/kaHbYAnNyrAVezp37Air
\ndyrg+Sq85LPvvp0j4lusnHvMPNdP98wBJY3v\/fqOhNN2gMseMwod+vvYm+bG0Xpn
\nvY+OWaYdNs0WvNK8GP3dd++rAXKGyKSIxWKaC88nceuc8GL1r9skNfZAypBIgC5Y
\nuDxPNlFUmH5\/S\/uZrnUW3h2lmdC7pqPySXEQxr8ARtz4211CHFdvrGj7w6mC0e1U
\nenASFn8w5tbLbMqfLLA39BikZbVsZ64HqkbDxPk5+kh3wLDNkm4WfWxokEjQ6mMc
\nreEUr45CxyTFV9L+WKhfH2nfZMzRL2ZtpDR6MxY4AGHJAQ5S2GyFW52H7LhCCZ4s
\n6TxmrM9JjfMwmXwpvdeoZZ0uD0xdhnnAK4xENHo6UstRyDk\/Yrqxa+naihcrN98g
\nK8KiMR7Bc8D3FA9iaSekbUZ\/BQEiQ8itZt7krnDOfrZ+aRucRgCtVIW7OJFp367x
\nla+qtlaQ\/7E=
\n=ELFT
\n—–END PGP SIGNATURE—–<\/p>\n
—
\nRHSA-announce mailing list
\nRHSA-announce@redhat.com
\nhttps:\/\/listman.redhat.com\/mailman\/listinfo\/rhsa-announce<\/p>\n","protected":false},"excerpt":{"rendered":"
—–BEGIN PGP SIGNED MESSAGE—– Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2022:0629-01 Product: Red Hat Enterprise Linux Advisory URL: https:\/\/access.redhat.com\/errata\/RHSA-2022:0629 Issue date: 2022-02-22 CVE Names: CVE-2021-0920 CVE-2021-4028 CVE-2021-4155 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-21030","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/21030","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=21030"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/21030\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=21030"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=21030"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=21030"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}