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Red Hat Product Errata RHSA-2021:2734 - Security Advisory
Issued:
2021-07-20
Updated:
2021-07-20

RHSA-2021:2734 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security and bug fix 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 7.2 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 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.

Bug Fix(es):

  • xfs umount hangs in xfs_wait_buftarg() due to negative bt_io_count (BZ#1949916)

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 7.2 x86_64

Fixes

  • 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-2021-33034
  • 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 7.2

SRPM
kernel-3.10.0-327.98.2.el7.src.rpm SHA-256: 0fc2c0a73368e78a65b6ede2ab2a4981a3c6401d82ec86dc9b51c83cfaeb66cf
x86_64
kernel-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 2bce745c8a874e8efe02200e23bd685a7597193ff33e2bd9830cca7f51d63e3c
kernel-abi-whitelists-3.10.0-327.98.2.el7.noarch.rpm SHA-256: 6282c3bb048f7091d237e6f3e537b0e842ef3eafc9cdfd0bfefaff27712db36e
kernel-debug-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 6b31c319f800b6c76330d4f0ab54bb70e2e12cde0ce5f004cd724301bba1924a
kernel-debug-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 5bc44768451d2c21ef49f292bb8f4caa208e828a806b16600d8152e51511eb5f
kernel-debug-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 5bc44768451d2c21ef49f292bb8f4caa208e828a806b16600d8152e51511eb5f
kernel-debug-devel-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: b0a44a644873a9777787f27f27c3abc372ae43874aab91a8fdb4016a2bb10197
kernel-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: b53a3a43af98cdac7333fd9f45d9a90e9ae646d97700cc25d59d0bb5cd19d0fb
kernel-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: b53a3a43af98cdac7333fd9f45d9a90e9ae646d97700cc25d59d0bb5cd19d0fb
kernel-debuginfo-common-x86_64-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 43928f94a2f24d5ac0c24fa978c54cd7926471ffd7c96d8ce0b8a98067a98329
kernel-debuginfo-common-x86_64-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 43928f94a2f24d5ac0c24fa978c54cd7926471ffd7c96d8ce0b8a98067a98329
kernel-devel-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 34faa5b42e761e9ebae3895ae6f1204565a33cb32875f4fa664c067742335591
kernel-doc-3.10.0-327.98.2.el7.noarch.rpm SHA-256: 78ae76fa4abea146e0e0edd59e0cc76e38f7d533d0c2d416fa7a623589a0b19a
kernel-headers-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: d9a735a3f74adfe7c2c2ab866bbeb1fe01ebb6cdb10fe5430cbf7f090a5af77b
kernel-tools-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 659eb15e505bac100901f24186ac564bacddaf2c68a0b14e350bc8d231964d3d
kernel-tools-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: c1c509bbb40af60a0d3a023e797484ca1918422534ba85262e83bfe42ea36a49
kernel-tools-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: c1c509bbb40af60a0d3a023e797484ca1918422534ba85262e83bfe42ea36a49
kernel-tools-libs-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: aa1425ff69124df272f84307adc710b124c6729095dff110f9b2de83aa139b74
kernel-tools-libs-devel-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 964f2cc16b4b636961d615aa75e4688741db7f1c4024c024fedaef553a3dccac
perf-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 7943284fb24d4ab13e950ec4059ea76b9bc01d6532be58d1b224b502bd94b616
perf-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: be26bd475b4e1b0aee9237a384b20500bf15921a9a3d69b357c86f5da3c3648c
perf-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: be26bd475b4e1b0aee9237a384b20500bf15921a9a3d69b357c86f5da3c3648c
python-perf-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 9abe145fa8f81cd19dec47afd911caa160e0d0f47655af09d9014b1364df5b0d
python-perf-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 1427b0b3b6db7be489a3c0b7e798fb537d2c291fd9ad228038e5a15e83ee5938
python-perf-debuginfo-3.10.0-327.98.2.el7.x86_64.rpm SHA-256: 1427b0b3b6db7be489a3c0b7e798fb537d2c291fd9ad228038e5a15e83ee5938

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

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