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Red Hat Product Errata RHSA-2021:3766 - Security Advisory
Issued:
2021-10-12
Updated:
2021-10-12

RHSA-2021:3766 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.

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: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks (CVE-2021-22543)
  • kernel: powerpc: KVM guest OS users can cause host OS memory corruption (CVE-2021-37576)

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.

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 - AUS 7.3 x86_64

Fixes

  • BZ - 1965461 - CVE-2021-22543 kernel: Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks
  • BZ - 1986506 - CVE-2021-37576 kernel: powerpc: KVM guest OS users can cause host OS memory corruption

CVEs

  • CVE-2021-22543
  • CVE-2021-37576

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server - AUS 7.3

SRPM
kernel-3.10.0-514.93.1.el7.src.rpm SHA-256: 3f4bd102897b6eeae848bd0feb81de116cf2a3f26b3e798dd9cd059ece241db5
x86_64
kernel-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 12ccadf9f6ec06462b17d80ded62fd5c6a728d2bcaea80de2ce3a176236e3f69
kernel-abi-whitelists-3.10.0-514.93.1.el7.noarch.rpm SHA-256: 3fd1c6babeafcb4efb0f887da4614022010490dcc3f0286216cac036dad5e17a
kernel-debug-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 5ff0e80aac86cf90968b757b4c0cb87e2bbf39192f6466ac9ce98e4929e27824
kernel-debug-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 58dc8f7c070b640f1e068822fa280ae5e46e7e82fa25a32fdea3c3a032f8ff68
kernel-debug-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 58dc8f7c070b640f1e068822fa280ae5e46e7e82fa25a32fdea3c3a032f8ff68
kernel-debug-devel-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 6db0e979afbe0ab9292671fd777d2f89339428fa2f8ae14d632ccf5f82f863a2
kernel-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 0e3ad975fd97ea39ce328e6e4f2ee525b787e16b0db41e681a18e45ecd020bae
kernel-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 0e3ad975fd97ea39ce328e6e4f2ee525b787e16b0db41e681a18e45ecd020bae
kernel-debuginfo-common-x86_64-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 9f29ea9f1552df4be93aaf880a4d2bcae941968e58bcd39d56f46737d6dec55b
kernel-debuginfo-common-x86_64-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 9f29ea9f1552df4be93aaf880a4d2bcae941968e58bcd39d56f46737d6dec55b
kernel-devel-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 84270db3810cf02e1a7227e0ce562cc220fb21e7b25b84790ba85b847c0d0a1b
kernel-doc-3.10.0-514.93.1.el7.noarch.rpm SHA-256: 0ff02e2d58989dc5f28fa47b9d2be4330a1459541bf9cd0e21b486483de9a339
kernel-headers-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: eaf43fd91e785b21b8d0434cf503fc5929a54b923eb2fcca9fea6e4d7d9a1fcb
kernel-tools-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: a75dd99071e5d348d249b817665f29d6a76e9204b75cae020fa6dd51718167c3
kernel-tools-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 62d408e2e7a04791e97f6a7c696b2c1d8daf7456ae2c657a657f479d39b6cd55
kernel-tools-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 62d408e2e7a04791e97f6a7c696b2c1d8daf7456ae2c657a657f479d39b6cd55
kernel-tools-libs-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: f9aca47894b58d2217656e2a0c38d6b409591aad8e2bcf6b94f08223b7ae33cb
kernel-tools-libs-devel-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 8b90ef4508676c68455ad884e658500baef9b8688281d968441006605151004a
perf-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 86c7a5367075fae3155e79eeb6a61e777e4174683dc82ac746ddf7e44a3973a9
perf-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 6daf40ecdfa0bce431a73afe594becea92c80bd330c68943fd4532ea62203ab0
perf-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: 6daf40ecdfa0bce431a73afe594becea92c80bd330c68943fd4532ea62203ab0
python-perf-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: d1e8eda4b9872fdab5f3dfac300c7d2c17f59304d694e1c8e9f0749e0384c62a
python-perf-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: e188d5fa1b87721acac46ea8dd63bc196362c74b453c47ecea641bcf8bba663e
python-perf-debuginfo-3.10.0-514.93.1.el7.x86_64.rpm SHA-256: e188d5fa1b87721acac46ea8dd63bc196362c74b453c47ecea641bcf8bba663e

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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