The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27789 advisory.

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

    Security Fix(es):

    * kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

    * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

    * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

    * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

    * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

    * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)

    * kernel: scsi: qla2xxx: Completely fix fcport double free (CVE-2026-43414)

    * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

    * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)

    * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

    * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

    * kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)

    * kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)

    * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

    * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

    * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

    * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

    Bug Fix(es) and Enhancement(s):

    * RHEL9.4 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-9.8.z] (JIRA:RHEL-166048)

    * [RHEL 9.8] Hung tasks during both suspend and hibernate operations on systems with Intel E810 NICs     [rhel-9.8.z] (JIRA:RHEL-175699)

    * DPLL: Add support for pin operational state [rhel-9.8.z] (JIRA:RHEL-175820)

    * DPLL: Add support for fractional frequency offset between pin and device [rhel-9.8.z] (JIRA:RHEL-175823)

    * ibmveth Adapter Freeze with Small MSS [rhel-9.8.z] (JIRA:RHEL-178308)

    * RHEL9.4 - s390/mm: Add missing secure storage access fixups [rhel-9.8.z] (JIRA:RHEL-183317)

    * rbd: eliminate a race in lock_dwork draining on unmap [rhel-9.8.z] (JIRA:RHEL-183130)

    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.

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 9 : kernel (RHSA-2026:27789)

high Nessus Plugin ID 321964

Version 1.3

Version 1.2

Version 1.1

Version 1.3 Jul 4, 2026, 4:43 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C") CVSS temporal metrics ("CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") Exploit attributes ("Exploit available" set to "True") Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202607041643
Version 1.2 Jun 25, 2026, 3:43 PM Detection (updated detection logic) Plugin Feed: 202606251543
Version 1.1 Jun 23, 2026, 12:13 AM New Plugin Feed: 202606230013