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Linux Distros Unpatched Vulnerability : CVE-2026-68311

🗓️ 11 Aug 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

Linux kernel mt7925 dereferences NULL pointer in decap offload MLO STA update, causing crash.

Related
Refs
Code
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-68311
10 Aug 202612:02
cve
cvelist
Cvelist
CVE-2026-68311 wifi: mt76: mt7925: guard link STA in decap offload
10 Aug 202612:02
cvelist
debiancve
Debian CVE
CVE-2026-68311
10 Aug 202612:02
debiancve
euvd
EUVD
EUVD-2026-55412
10 Aug 202612:02
euvd
nvd
NVD
CVE-2026-68311
10 Aug 202613:20
nvd
osv
OSV
BELL-CVE-2026-68311
12 Aug 202606:04
osv
osv
OSV
DEBIAN-CVE-2026-68311
10 Aug 202613:20
osv
osv
OSV
UBUNTU-CVE-2026-68311
11 Aug 202600:00
osv
redhatcve
RedhatCVE
CVE-2026-68311
11 Aug 202610:43
redhatcve
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

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"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
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  - In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: guard link STA in
    decap offload mt7925_sta_set_decap_offload() iterates over the vif valid_links mask when updating decap
    offload state for an MLO station. The station may not have a link STA for every valid link of the vif, so
    mt792x_sta_to_link() can return NULL for a link that belongs to the vif but not to the station. The
    function currently dereferences mlink before checking whether the link WCID is ready. If mlink is NULL,
    setting or clearing MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer. Skip links without a station link
    before touching mlink->wcid. (CVE-2026-68311)

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          {"reference": "kernel-rt-kvm"},
          {"reference": "kernel-rt-modules"},
          {"reference": "kernel-rt-modules-core"},
          {"reference": "kernel-rt-modules-extra"},
          {"reference": "kernel-rt-modules-internal"},
          {"reference": "kernel-rt-modules-partner"},
          {"reference": "kernel-rt-selftests-internal"},
          {"reference": "kernel-selftests-internal"},
          {"reference": "kernel-tools"},
          {"reference": "kernel-tools-libs"},
          {"reference": "kernel-tools-libs-devel"},
          {"reference": "kernel-uki-virt"},
          {"reference": "kernel-uki-virt-addons"},
          {"reference": "kernel-zfcpdump"},
          {"reference": "kernel-zfcpdump-core"},
          {"reference": "kernel-zfcpdump-devel"},
          {"reference": "kernel-zfcpdump-devel-matched"},
          {"reference": "kernel-zfcpdump-modules"},
          {"reference": "kernel-zfcpdump-modules-core"},
          {"reference": "kernel-zfcpdump-modules-extra"},
          {"reference": "kernel-zfcpdump-modules-internal"},
          {"reference": "kernel-zfcpdump-modules-partner"},
          {"reference": "libperf"},
          {"reference": "libperf-devel"},
          {"reference": "perf"},
          {"reference": "python3-perf"},
          {"reference": "rtla"},
          {"reference": "rv"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}

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11 Aug 2026 00:00Current
5.4Medium risk
Vulners AI Score5.4
EPSS0.00168
3