Detections
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AlmaLinux 8 : kernel-rt (ALSA-2026:21745)
high Nessus Plugin ID 317530
Synopsis
The remote AlmaLinux host is missing one or more security updates.Description
The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:21745 advisory.* kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981)
* kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183)
* kernel: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events (CVE-2025-68347)
* kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116)
* kernel: Linux kernel: Denial of service and memory corruption in RDMA umad (CVE-2026-23243)
* kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270)
* kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455)
* kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408)
* kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532)
* kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684)
* kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685)
* kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027)
* kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020)
* kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051)
* kernel: smb: client: validate the whole DACL before rewriting it in cifsacl (CVE-2026-31709)
* kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)
* kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190)
* kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158)
Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 317530
File Name: alma_linux_ALSA-2026-21745.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 5/29/2026
Updated: 5/29/2026
Supported Sensors: Continuous Assessment, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-43027
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:alma:linux:kernel-rt-modules, p-cpe:/a:alma:linux:kernel-rt-core, cpe:/o:alma:linux:8::appstream, p-cpe:/a:alma:linux:kernel-rt-modules-extra, p-cpe:/a:alma:linux:kernel-rt-debug-devel, p-cpe:/a:alma:linux:kernel-rt-debug-modules-extra, p-cpe:/a:alma:linux:kernel-rt, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:kernel-rt-debug-core, p-cpe:/a:alma:linux:kernel-rt-debug, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::resilientstorage, p-cpe:/a:alma:linux:kernel-rt-devel, cpe:/o:alma:linux:8::baseos, p-cpe:/a:alma:linux:kernel-rt-debug-modules, cpe:/o:alma:linux:8::sap
Required KB Items: Host/local_checks_enabled, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 5/28/2026
Vulnerability Publication Date: 10/15/2025
Reference Information
CVE: CVE-2025-39981, CVE-2025-68183, CVE-2025-68347, CVE-2025-71116, CVE-2026-23243, CVE-2026-23270, CVE-2026-23455, CVE-2026-31408, CVE-2026-31532, CVE-2026-31684, CVE-2026-31685, CVE-2026-31709, CVE-2026-43020, CVE-2026-43027, CVE-2026-43051, CVE-2026-43158, CVE-2026-43163, CVE-2026-43190