rhsa-2020_0174
Vulnerability from csaf_redhat
Published
2020-01-21 15:53
Modified
2024-11-05 21:44
Summary
Red Hat Security Advisory: kernel-alt security and bug fix update

Notes

Topic
An update for kernel-alt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-alt packages provide the Linux kernel version 4.x. Security Fix(es): * Kernel: speculative bounds check bypass store (CVE-2018-3693) * kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559) * kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c (CVE-2019-3846) * kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr (CVE-2019-8912) * kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126) * kernel: Count overflow in FUSE request leading to use-after-free issues. (CVE-2019-11487) * kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver (CVE-2019-14816) * kernel: buffer overflow in cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c (CVE-2019-17133) * kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS (CVE-2019-14814) * kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS (CVE-2019-14815) * kernel: (powerpc) incomplete Spectre-RSB mitigation leads to information exposure (CVE-2019-18660) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Kernel panic on job cleanup, related to SyS_getdents64 (BZ#1702057) * Kernel modules generated incorrectly when system is localized to non-English language (BZ#1705285) * RHEL-Alt-7.6 - Fixup tlbie vs store ordering issue on POWER9 (BZ#1756270)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.



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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Carl Waldspurger"
          ],
          "organization": "Carl Waldspurger Consulting"
        },
        {
          "names": [
            "Vladimir Kiriansky"
          ],
          "organization": "MIT"
        }
      ],
      "cve": "CVE-2018-3693",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2018-03-12T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1581650"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an address which depends on the untrusted value. Such writes cause an update into the microprocessor\u0027s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to influence speculative execution and/or read privileged memory by conducting targeted cache side-channel attacks.",
          "title": "Vulnerability description"
        },
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          "text": "This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2 may address this issue.",
          "title": "Statement"
        },
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          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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        {
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          "category": "external",
          "summary": "https://software.intel.com/sites/default/files/managed/4e/a1/337879-analyzing-potential-bounds-Check-bypass-vulnerabilities.pdf",
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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        "id": "CWE-416",
        "name": "Use After Free"
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      "discovery_date": "2018-10-23T00:00:00+00:00",
      "ids": [
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          "text": "A use-after-free flaw can occur in the Linux kernel due to a race condition between packet_do_bind() and packet_notifier() functions called for an AF_PACKET socket. An unprivileged, local user could use this flaw to induce kernel memory corruption on the system, leading to an unresponsive system or to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Use-after-free due to race condition in AF_PACKET implementation",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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      "title": "kernel: Use-after-free due to race condition in AF_PACKET implementation"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "huangwen"
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          "organization": "ADLab of Venustech"
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      "cve": "CVE-2019-3846",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
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        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s Marvell wifi chip driver. A heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c allows remote attackers to cause a denial of service(system crash) or execute arbitrary code.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is currently rated as Important as it is possible for an attacker to setup a wifi access point with identical configuration in another location and intercept have the system auto connect and possibly be exploited.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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      "title": "kernel: Heap overflow in mwifiex_update_bss_desc_with_ie function in marvell/mwifiex/scan.c"
    },
    {
      "cve": "CVE-2019-8912",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2019-02-19T00:00:00+00:00",
      "ids": [
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          "text": "1678685"
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      "notes": [
        {
          "category": "description",
          "text": "In the Linux kernel af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free (UAF) in sockfs_setattr. A local attacker can use this flaw to escalate privileges and take control of the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-8912"
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-8912",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-8912"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-8912",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-8912"
        }
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      "release_date": "2019-02-15T00:00:00+00:00",
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      "title": "kernel: af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free in sockfs_setattr"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "huangwen"
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          "organization": "ADLab of Venustech"
        }
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      "cve": "CVE-2019-10126",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
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          "system_name": "Red Hat Bugzilla ID",
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        {
          "category": "description",
          "text": "A flaw was found in the mwifiex implementation in the Linux kernel. A system connecting to wireless access point could be manipulated by an attacker with advanced permissions on the access point into localized memory corruption or possibly privilege escalation.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "category": "impact",
          "details": "Important"
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      "title": "kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c"
    },
    {
      "cve": "CVE-2019-11487",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "discovery_date": "2019-04-24T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1703063"
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      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s implementation of the FUSE filesystem, where it allows a page reference counter overflow. If a page reference counter overflows into a negative value, it can be placed back into the \"free\" list for reuse by other applications. This flaw allows a local attacker who can manipulate memory page reference counters to cause memory corruption and possible privilege escalation by triggering a use-after-free condition.\r\n\r\nThe current attack requires the system to have approximately 140 GB of RAM for this attack to be performed. It may be possible that the attack can occur with fewer memory requirements.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: Count overflow in FUSE request leading to use-after-free issues.",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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      "title": "kernel: Count overflow in FUSE request leading to use-after-free issues."
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Huangwen"
          ],
          "organization": "ADLab of Venustech"
        }
      ],
      "cve": "CVE-2019-14814",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2019-08-21T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "1744130"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u2019s implementation of the Marvell wifi driver, which can allow a local user who has CAP_NET_ADMIN or administrative privileges to possibly cause a Denial Of Service (DOS) by corrupting memory and possible code execution.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "kernel: heap overflow in mwifiex_set_uap_rates() function of Marvell Wifi Driver leading to DoS"
    },
    {
      "acknowledgments": [
        {
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      "cve": "CVE-2019-14815",
      "cwe": {
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        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2019-08-21T00:00:00+00:00",
      "ids": [
        {
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          "text": "1744137"
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      ],
      "notes": [
        {
          "category": "description",
          "text": "A vulnerability found in the Linux kernel\u0027s WMM implementation for Marvell WiFi-based hardware (mwifiex) could lead to a denial of service or allow arbitrary code execution. For this flaw to be executed, the attacker must be both local and privileged. There is no mitigation to this flaw. A patch has been provided to remediate this flaw.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: heap-overflow in mwifiex_set_wmm_params() function of Marvell WiFi driver leading to DoS",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
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          "category": "description",
          "text": "A vulnerability was found in the Linux kernel\u0027s Marvell WiFi chip driver. Where, while parsing vendor-specific informational attributes, an attacker on the same WiFi physical network segment could cause a system crash, resulting in a denial of service, or potentially execute arbitrary code. This flaw affects the network interface at the most basic level meaning the attacker only needs to affiliate with the same network device as the vulnerable system to create an attack path.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-14816"
        },
        {
          "category": "external",
          "summary": "RHBZ#1744149",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1744149"
        },
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          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-14816",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-14816"
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          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-14816",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-14816"
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        {
          "category": "external",
          "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7caac62ed598a196d6ddf8d9c121e12e082cac3a",
          "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7caac62ed598a196d6ddf8d9c121e12e082cac3a"
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      "release_date": "2019-08-28T10:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2020-01-21T15:53:02+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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            "privilegesRequired": "LOW",
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          "title": "Vulnerability description"
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    {
      "cve": "CVE-2019-18660",
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          "title": "Vulnerability description"
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          "text": "kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure",
          "title": "Vulnerability summary"
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        {
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          "text": "This issue affects versions of the kernel package as shipped with Red Hat Enterprise Linux 6, 7 and 8. Future kernel updates for Red Hat Enterprise Linux 6, 7 and 8 may address this issue.\n\nThis issue does not affect the version of the kernel package as shipped with Red Hat Enterprise MRG 2.",
          "title": "Statement"
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        {
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2019-18660"
        },
        {
          "category": "external",
          "summary": "RHBZ#1777825",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1777825"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2019-18660",
          "url": "https://www.cve.org/CVERecord?id=CVE-2019-18660"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2019-18660",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-18660"
        }
      ],
      "release_date": "2019-11-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-01-21T15:53:02+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2020:0174"
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
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  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.