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Linux Distros Unpatched Vulnerability : CVE-2026-68102

🗓️ 10 Aug 2026 00:00:00Reported by TenableType 
nessus
 nessus
🔗 www.tenable.com👁 3 Views

amdgpu driver leaks aperture mapping on driver unload causing PAT conflict on reload.

Related
Refs
Code
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-68102
10 Aug 202611:58
cve
cvelist
Cvelist
CVE-2026-68102 drm/amdgpu: fix aperture mapping leak
10 Aug 202611:58
cvelist
debiancve
Debian CVE
CVE-2026-68102
10 Aug 202611:58
debiancve
euvd
EUVD
EUVD-2026-55483
10 Aug 202611:58
euvd
nvd
NVD
CVE-2026-68102
10 Aug 202613:19
nvd
osv
OSV
BELL-CVE-2026-68102
12 Aug 202606:04
osv
osv
OSV
DEBIAN-CVE-2026-68102
10 Aug 202613:19
osv
osv
OSV
UBUNTU-CVE-2026-68102
10 Aug 202613:19
osv
redhatcve
RedhatCVE
CVE-2026-68102
11 Aug 202619:23
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
patch available.

  - drm/amdgpu: fix aperture mapping leak amdgpu_pci_remove() calls drm_dev_unplug() before invoking the
    driver fini routines. This causes drm_dev_enter() in amdgpu_ttm_fini() to always return false, so
    iounmap(aper_base_kaddr) never runs on normal driver unload, leaving an orphaned entry in the x86 PAT
    interval tree. On connected_to_cpu hardware, the aperture is mapped write-back (WB) via ioremap_cache().
    On reload, IP discovery calls memremap(..., MEMREMAP_WC) over the same range. The WC vs WB conflict
    causes: ioremap error for 0x..., requested 0x1, got 0x0 amdgpu: discovery failed: -2 Fix by switching to
    devres-managed mappings so cleanup is guaranteed regardless of drm_dev_enter() state: - connected_to_cpu
    path: devm_memremap(MEMREMAP_WB). For IORESOURCE_SYSTEM_RAM ranges this takes the try_ram_remap()
    shortcut, returning __va(offset) from the existing kernel direct map. No new ioremap VA or PAT entry is
    created, so there is nothing to orphan. - dGPU path: devm_ioremap_wc() registers iounmap() as a devres
    action, guaranteeing cleanup at device_del() time. Also remove iounmap(aper_base_kaddr) from
    amdgpu_device_unmap_mmio() since the mapping is now devres-owned. v2: Remove redundant x86_64 guard (Lijo)
    (cherry picked from commit d871e99879cb5fd1fa798b006b4888887e63a17a) (CVE-2026-68102)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

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          {"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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12 Aug 2026 00:00Current
5.5Medium risk
Vulners AI Score5.5
EPSS0.00168
3