Detections
Analytics
AlmaLinux 8 : kernel (ALSA-2026:68531)
medium Nessus Plugin ID 347976
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-2026:68531 advisory.* kernel: ipvlan: Make the addrs_lock be per port (CVE-2026-23103)
* kernel: xfrm: hold dev ref until after transport_finish NF_HOOK (CVE-2026-31663)
* kernel: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() (CVE-2026-43233)
* kernel: ipv6: prevent possible UaF in addrconf_permanent_addr() (CVE-2026-43339)
* kernel: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP (CVE-2026-46266)
* kernel: flow_dissector: do not dissect PPPoE PFC frames (CVE-2026-46306)
* kernel: netfilter: xt_policy: fix strict mode inbound policy matching (CVE-2026-52920)
* kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls (CVE-2026-53075)
* kernel: ipv6: sit: reload inner IPv6 header after GSO offloads (CVE-2026-53228)
* kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)
* kernel: netfilter: require Ethernet MAC header before using eth_hdr() (CVE-2026-53131)
* kernel: netfilter: conntrack_irc: fix possible out-of-bounds read (CVE-2026-53268)
* kernel: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() (CVE-2026-53239)
* kernel: ALSA: timer: Fix UAF at snd_timer_user_params() (CVE-2026-53192)
* kernel: net: guard timestamp cmsgs to real error queue skbs (CVE-2026-53223)
* kernel: ipv6: mcast: Fix use-after-free when processing MLD queries (CVE-2026-53275)
* kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)
* kernel: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() (CVE-2026-63921)
* kernel: xfrm: input: hold netns during deferred transport reinjection (CVE-2026-63919)
* kernel: ip6: vti: Use ip6_tnl.net in vti6_changelink() (CVE-2026-63917)
* kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)
* kernel: xfrm: fix stale skb->prev after async crypto steals a GSO segment (CVE-2026-68426)
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: Medium
ID: 347976
File Name: alma_linux_ALSA-2026-68531.nasl
Version: 1.1
Type: Local
Family: Alma Linux Local Security Checks
Published: 9/18/2026
Updated: 9/18/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.8
Percentile: 99.33
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.6
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C
CVSS Score Source: CVE-2026-23103
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:bpftool, p-cpe:/a:alma:linux:kernel-abi-stablelists, p-cpe:/a:alma:linux:kernel-core, p-cpe:/a:alma:linux:kernel-cross-headers, p-cpe:/a:alma:linux:kernel-debug-core, p-cpe:/a:alma:linux:kernel-debug-devel, p-cpe:/a:alma:linux:kernel-debug-modules-extra, p-cpe:/a:alma:linux:kernel-debug-modules, p-cpe:/a:alma:linux:kernel-debug, p-cpe:/a:alma:linux:kernel-devel, p-cpe:/a:alma:linux:kernel-headers, p-cpe:/a:alma:linux:kernel-modules-extra, p-cpe:/a:alma:linux:kernel-modules, p-cpe:/a:alma:linux:kernel-tools-libs-devel, p-cpe:/a:alma:linux:kernel-tools-libs, p-cpe:/a:alma:linux:kernel-tools, p-cpe:/a:alma:linux:kernel-zfcpdump-core, p-cpe:/a:alma:linux:kernel-zfcpdump-devel, p-cpe:/a:alma:linux:kernel-zfcpdump-modules-extra, p-cpe:/a:alma:linux:kernel-zfcpdump-modules, p-cpe:/a:alma:linux:kernel-zfcpdump, p-cpe:/a:alma:linux:kernel, p-cpe:/a:alma:linux:perf, p-cpe:/a:alma:linux:python3-perf
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AlmaLinux/release, Host/AlmaLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/17/2026
Vulnerability Publication Date: 2/4/2026
Reference Information
CVE: CVE-2026-23103, CVE-2026-31663, CVE-2026-43233, CVE-2026-43339, CVE-2026-46266, CVE-2026-46306, CVE-2026-52920, CVE-2026-53075, CVE-2026-53131, CVE-2026-53176, CVE-2026-53192, CVE-2026-53223, CVE-2026-53228, CVE-2026-53239, CVE-2026-53268, CVE-2026-53275, CVE-2026-63917, CVE-2026-63919, CVE-2026-63921, CVE-2026-64002, CVE-2026-68143, CVE-2026-68426