Linux Distros Unpatched Vulnerability : CVE-2023-53087

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

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  script_cve_id("CVE-2023-53087");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2023-53087");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - In the Linux kernel, the following vulnerability has been resolved: drm/i915/active: Fix misuse of non-
    idle barriers as fence trackers Users reported oopses on list corruptions when using i915 perf with a
    number of concurrently running graphics applications. Root cause analysis pointed at an issue in barrier
    processing code -- a race among perf open / close replacing active barriers with perf requests on kernel
    context and concurrent barrier preallocate / acquire operations performed during user context first pin /
    last unpin. When adding a request to a composite tracker, we try to reuse an existing fence tracker,
    already allocated and registered with that composite. The tracker we obtain may already track another
    fence, may be an idle barrier, or an active barrier. If the tracker we get occurs a non-idle barrier then
    we try to delete that barrier from a list of barrier tasks it belongs to. However, while doing that we
    don't respect return value from a function that performs the barrier deletion. Should the deletion ever
    fail, we would end up reusing the tracker still registered as a barrier task. Since the same structure
    field is reused with both fence callback lists and barrier tasks list, list corruptions would likely
    occur. Barriers are now deleted from a barrier tasks list by temporarily removing the list content,
    traversing that content with skip over the node to be deleted, then populating the list back with the
    modified content. Should that intentionally racy concurrent deletion attempts be not serialized, one or
    more of those may fail because of the list being temporary empty. Related code that ignores the results of
    barrier deletion was initially introduced in v5.4 by commit d8af05ff38ae (drm/i915: Allow sharing the
    idle-barrier from other kernel requests). However, all users of the barrier deletion routine were
    apparently serialized at that time, then the issue didn't exhibit itself. Results of git bisect with help
    of a newly developed igt@gem_barrier_race@remote-request IGT test indicate that list corruptions might
    start to appear after commit 311770173fac (drm/i915/gt: Schedule request retirement when timeline
    idles), introduced in v5.5. Respect results of barrier deletion attempts -- mark the barrier as idle only
    if successfully deleted from the list. Then, before proceeding with setting our fence as the one currently
    tracked, make sure that the tracker we've got is not a non-idle barrier. If that check fails then don't
    use that tracker but go back and try to acquire a new, usable one. v3: use unlikely() to document what
    outcome we expect (Andi), - fix bad grammar in commit description. v2: no code changes, - blame commit
    311770173fac (drm/i915/gt: Schedule request retirement when timeline idles), v5.5, not commit
    d8af05ff38ae (drm/i915: Allow sharing the idle-barrier from other kernel requests), v5.4, - reword
    commit description. (cherry picked from commit 506006055769b10d1b2b4e22f636f3b45e0e9fc7) (CVE-2023-53087)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2023-53087");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2023-53087");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
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          {"reference": "linux-starfive-5.19"},
          {"reference": "linux-starfive-6.2"},
          {"reference": "linux-starfive-6.5"},
          {"reference": "linux-tools-5.15.0"},
          {"reference": "linux-tools-5.17.0"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "linux-raspi-realtime"},
          {"reference": "linux-realtime"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "kernel-rt"},
          {"reference": "kernel-rt-core"},
          {"reference": "kernel-rt-debug"},
          {"reference": "kernel-rt-debug-core"},
          {"reference": "kernel-rt-debug-devel"},
          {"reference": "kernel-rt-debug-devel-matched"},
          {"reference": "kernel-rt-debug-kvm"},
          {"reference": "kernel-rt-debug-modules"},
          {"reference": "kernel-rt-debug-modules-core"},
          {"reference": "kernel-rt-debug-modules-extra"},
          {"reference": "kernel-rt-debug-modules-internal"},
          {"reference": "kernel-rt-debug-modules-partner"},
          {"reference": "kernel-rt-devel"},
          {"reference": "kernel-rt-devel-matched"},
          {"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"}
        ]
      }
    ]
  }
};

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 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');
}