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Red Hat Product Errata RHSA-2021:2733 - Security Advisory
Issued:
2021-07-20
Updated:
2021-07-20

RHSA-2021:2733 - 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: size_t-to-int conversion vulnerability in the filesystem layer (CVE-2021-33909)
  • kernel: Use after free via PI futex state (CVE-2021-3347)
  • kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan (CVE-2021-33034)

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 - 1922249 - CVE-2021-3347 kernel: Use after free via PI futex state
  • BZ - 1961305 - CVE-2021-33034 kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan
  • BZ - 1970273 - CVE-2021-33909 kernel: size_t-to-int conversion vulnerability in the filesystem layer

CVEs

  • CVE-2021-3347
  • CVE-2021-33034
  • CVE-2021-33909

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/security/vulnerabilities/RHSB-2021-006
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-3.10.0-514.90.2.el7.src.rpm SHA-256: 884b206c42429110e04e567c348848b7b96a48a2857b7eeca11a58beb8a71235
x86_64
kernel-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 8d1efe531ff6f78599910374281a4bd3c93d876e391e99f212820664eb2c5e64
kernel-abi-whitelists-3.10.0-514.90.2.el7.noarch.rpm SHA-256: 9767dbb9cd506c12f2cd29833f57152cf7258ee5b0e906583a7f43fda9be332b
kernel-debug-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: eb9808bc53ef77fcaae2d906b9fd2d73f426a5496f8065682382305e70e31c13
kernel-debug-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 0ced04465b7075ece0f0e6f796e91265e2b53e8dd7c7f93385797bb918604e7e
kernel-debug-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 0ced04465b7075ece0f0e6f796e91265e2b53e8dd7c7f93385797bb918604e7e
kernel-debug-devel-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 36ef10dac6ca4ed0139e3b4f50f5755a619410dec572c7843aa6bef3534ef3fa
kernel-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: a8d2b0c47f1c1e5d8dd39c1cc04f5cd272b5cbf23b1b096e4fa865a48e778252
kernel-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: a8d2b0c47f1c1e5d8dd39c1cc04f5cd272b5cbf23b1b096e4fa865a48e778252
kernel-debuginfo-common-x86_64-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 162e0aa948fab9c016dcabb8031cacda0ddcab000aa1a056156e11069af8e2bc
kernel-debuginfo-common-x86_64-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 162e0aa948fab9c016dcabb8031cacda0ddcab000aa1a056156e11069af8e2bc
kernel-devel-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: aa2dd4392b567172e0272adac0faf5255db257bfc78141b20f602af9374096ee
kernel-doc-3.10.0-514.90.2.el7.noarch.rpm SHA-256: fddd1ffe1a56fe1c2630389bfb26b56764c82fb1ec1742ff01a5be1de454190d
kernel-headers-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: bb00f89407e7fd48a3e2c7f9cd6efe093cfd2114dc5ea3a8986d0ed14aa04fa5
kernel-tools-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 9f2da91b24d04f21a6b7066bfd1df271d355d9444469995a3c818118f3ed5ceb
kernel-tools-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: da7f14f4d19064dab7ecfb96d742c4dca76506a03bbbd406a56eaf9356138dbb
kernel-tools-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: da7f14f4d19064dab7ecfb96d742c4dca76506a03bbbd406a56eaf9356138dbb
kernel-tools-libs-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: c132e100f1437428ceaa94258171f0ab72d39c6d3b2694759f2ed97310cd38f5
kernel-tools-libs-devel-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: ae821a2e4b625450e8992ff9d344d0582167746162cd9aa9f72a949f9c062fe6
perf-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: d0f535f485d6964729afc5d0d7a3a5dfc8d34190ff7ff12945eff5994e54f2f0
perf-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 9f884bc172f52b89ca0c4613934caa735404669a524b49a1559ca69b4bdb6a0a
perf-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 9f884bc172f52b89ca0c4613934caa735404669a524b49a1559ca69b4bdb6a0a
python-perf-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 0a9c3d3dcd9224cc49e43d0be0946f0a680f8ce959239b0152e8468005670950
python-perf-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 17b2e9cf7116be08a9b792fb45d991ef48c2264b55cc9a0ff7d895d1965817f0
python-perf-debuginfo-3.10.0-514.90.2.el7.x86_64.rpm SHA-256: 17b2e9cf7116be08a9b792fb45d991ef48c2264b55cc9a0ff7d895d1965817f0

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

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