QID 239344

Date Published: 2021-05-20

QID 239344: Red Hat Update for kernel (RHSA-2021:1531)

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es): kernel: Local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c (CVE-2020-25211) kernel: SCSI target (LIO)
write to any block on ILO backstore (CVE-2020-28374) kernel: out-of-bounds read in libiscsi module (CVE-2021-27364) kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365) kernel: malicious USB devices can lead to multiple out-of-bounds write (CVE-2019-19532) kernel: ICMP rate limiting can be used for DNS poisoning attack (CVE-2020-25705) kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

Affected Products:

Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
Red Hat Enterprise Linux Server - AUS 7.7 x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.7 s390x
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.7 ppc64
Red Hat Enterprise Linux EUS Compute Node 7.7 x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.7 ppc64le
Red Hat Enterprise Linux Server - TUS 7.7 x86_64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7 x86_64

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as Critical - 8.1 severity.
  • CVSS V2 rated as Medium - 5.8 severity.
    • Solution
    Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:1531 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239344

    CVE-2019-19532 | CVE-2020-25211 | CVE-2020-25705 | CVE-2020-28374 | CVE-2021-27363 | CVE-2021-27364 | CVE-2021-27365 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:1531 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:1531?language=en
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