The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:1081 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)

    * kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)

    * kernel: Use after free via PI futex state (CVE-2021-3347)

    * kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c (CVE-2021-26708)

    * kernel: out-of-bounds read in libiscsi module (CVE-2021-27364)

    * kernel: heap buffer overflow in the iSCSI subsystem (CVE-2021-27365)

    * Kernel: KVM: host stack overflow due to lazy update IOAPIC (CVE-2020-27152)

    * kernel: iscsi: unrestricted access to sessions and handles (CVE-2021-27363)

    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):

    * kernel-rt possible livelock: WARNING: CPU: 28 PID: 3109 at kernel/ptrace.c:242     ptrace_check_attach+0xdd/0x1a0 (BZ#1925308)

    * kernel-rt: update RT source tree to the RHEL-8.3.z3 source tree (BZ#1926369)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

RHEL 8 : kernel-rt (RHSA-2021:1081)

high Nessus Plugin ID 148369

Version 1.10

Version 1.9

Version 1.8

Version 1.10 Jun 4, 2024, 9:37 PM Detection (updated detection logic) Plugin metadata Reference Plugin Feed: 202406042137
Version 1.9 Jan 5, 2024, 3:16 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202401051516
Version 1.8 Jan 23, 2023, 7:12 PM Logic Changes (Added support for repository relative URLs) Plugin Feed: 202301231912