QID 239617

Date Published: 2021-09-13

QID 239617: Red Hat Update for kpatch-patch (RHSA-2021:3441)

This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.

Security Fix(es): kernel: use-after-free in route4_change()
in net/sched/cls_route.c (CVE-2021-3715)

Affected Products:

Red Hat Enterprise Linux Server 7 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le

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 V2 rated as High - 7.5 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-2021:3441 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239617

    CVE-2021-3715 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:3441 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:3441?language=en
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