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CERTFR-2022-AVI-778
Vulnerability from certfr_avis
De multiples vulnérabilités ont été corrigées dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer un déni de service à distance, une exécution de code arbitraire et une atteinte à la confidentialité des données.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
        
      References
        | Title | Publication Time | Tags | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 | ||||||||||||||||||||||||||
{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Ubuntu 20.04 LTS",
      "product": {
        "name": "Ubuntu",
        "vendor": {
          "name": "Ubuntu",
          "scada": false
        }
      }
    },
    {
      "description": "Ubuntu 14.04 ESM",
      "product": {
        "name": "Ubuntu",
        "vendor": {
          "name": "Ubuntu",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2022-33741",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-33741"
    },
    {
      "name": "CVE-2021-33656",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33656"
    },
    {
      "name": "CVE-2022-33740",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-33740"
    },
    {
      "name": "CVE-2021-33061",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-33061"
    },
    {
      "name": "CVE-2022-36946",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-36946"
    },
    {
      "name": "CVE-2022-2588",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-2588"
    },
    {
      "name": "CVE-2022-26365",
      "url": "https://www.cve.org/CVERecord?id=CVE-2022-26365"
    }
  ],
  "initial_release_date": "2022-08-31T00:00:00",
  "last_revision_date": "2022-08-31T00:00:00",
  "links": [
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu du 30 ao\u00fbt 2022",
      "url": "https://ubuntu.com/security/notices/USN-5590-1"
    },
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu du 30 ao\u00fbt 2022",
      "url": "https://ubuntu.com/security/notices/USN-5572-2"
    },
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu du 30 ao\u00fbt 2022",
      "url": "https://ubuntu.com/security/notices/USN-5589-1"
    },
    {
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu du 30 ao\u00fbt 2022",
      "url": "https://ubuntu.com/security/notices/USN-5588-1"
    }
  ],
  "reference": "CERTFR-2022-AVI-778",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2022-08-31T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 corrig\u00e9es dans \u003cspan\nclass=\"textit\"\u003ele noyau Linux d\u0027Ubuntu\u003c/span\u003e. Elles permettent \u00e0 un\nattaquant de provoquer un d\u00e9ni de service \u00e0 distance, une ex\u00e9cution de\ncode arbitraire et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.\n",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5589-1 du 30 ao\u00fbt 2022",
      "url": null
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5590-1 du 30 ao\u00fbt 2022",
      "url": null
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5572-2 du 30 ao\u00fbt 2022",
      "url": null
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-5588-1 du 30 ao\u00fbt 2022",
      "url": null
    }
  ]
}
  CVE-2022-26365 (GCVE-0-2022-26365)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
      Modified
2024-08-03 05:03
      
          Severity ?
        
        
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
            
          
        References
          | URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 | |||||||||||||||||||||||
{
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        },
        "references": [
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              "x_transferred"
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          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://xenbits.xen.org/xsa/advisory-403.html"
          },
          {
            "name": "[oss-security] 20220705 Xen Security Advisory 403 v3 (CVE-2022-26365,CVE-2022-33740,CVE-2022-33741,CVE-2022-33742) - Linux disk/nic frontends data leaks",
            "tags": [
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            "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"
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            "tags": [
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          },
          {
            "name": "FEDORA-2022-2c9f8224f8",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"
          },
          {
            "name": "DSA-5191",
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              "x_transferred"
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            "url": "https://www.debian.org/security/2022/dsa-5191"
          },
          {
            "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
            "tags": [
              "mailing-list",
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              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "vendor": "Linux",
          "versions": [
            {
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          "versions": [
            {
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              "version": "consult Xen advisory XSA-403"
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027The issue related to not zeroing memory areas used for shared communications\\nwas discovered by Roger Pau Monn\u00e9 of Citrix.\\n\\nThe issue related to leaking contiguous data in granted pages was disclosed\\npublicly.\u0027}]}}}"
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        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "description": {
                "description_data": [
                  {
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                    "value": "An untrusted backend can access data not intended to be shared.  If such\nmappings are made with write permissions the backend could also cause\nmalfunctions and/or crashes to consumers of contiguous data in the shared\npages."
                  }
                ]
              }
            },
            "type": "unknown"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "unknown",
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            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-02T18:06:21",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "tags": [
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          "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://xenbits.xen.org/xsa/advisory-403.html"
        },
        {
          "name": "[oss-security] 20220705 Xen Security Advisory 403 v3 (CVE-2022-26365,CVE-2022-33740,CVE-2022-33741,CVE-2022-33742) - Linux disk/nic frontends data leaks",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"
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        {
          "name": "FEDORA-2022-c4ec706488",
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            "x_refsource_FEDORA"
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        },
        {
          "name": "FEDORA-2022-2c9f8224f8",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"
        },
        {
          "name": "DSA-5191",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5191"
        },
        {
          "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@xen.org",
          "ID": "CVE-2022-26365",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Linux",
                      "version": {
                        "version_data": [
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                            "version_affected": "?",
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                  "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used."
                }
              ]
            }
          }
        },
        "credit": {
          "credit_data": {
            "description": {
              "description_data": [
                {
                  "lang": "eng",
                  "value": "The issue related to not zeroing memory areas used for shared communications\nwas discovered by Roger Pau Monn\u00e9 of Citrix.\n\nThe issue related to leaking contiguous data in granted pages was disclosed\npublicly."
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        },
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                  "value": "unknown"
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        },
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          "reference_data": [
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              "name": "https://xenbits.xenproject.org/xsa/advisory-403.txt",
              "refsource": "MISC",
              "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"
            },
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              "name": "http://xenbits.xen.org/xsa/advisory-403.html",
              "refsource": "CONFIRM",
              "url": "http://xenbits.xen.org/xsa/advisory-403.html"
            },
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            },
            {
              "name": "FEDORA-2022-c4ec706488",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"
            },
            {
              "name": "FEDORA-2022-2c9f8224f8",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"
            },
            {
              "name": "DSA-5191",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2022/dsa-5191"
            },
            {
              "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
            }
          ]
        },
        "workaround": {
          "workaround_data": {
            "description": {
              "description_data": [
                {
                  "lang": "eng",
                  "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious."
                }
              ]
            }
          }
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2022-26365",
    "datePublished": "2022-07-05T12:50:28",
    "dateReserved": "2022-03-02T00:00:00",
    "dateUpdated": "2024-08-03T05:03:32.784Z",
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}
  CVE-2022-36946 (GCVE-0-2022-36946)
Vulnerability from cvelistv5
Published
2022-07-27 00:00
      Modified
2025-05-05 16:13
      
          Severity ?
        
        
      
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - n/a
Summary
nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.
            
          
        References
          {
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T10:21:32.314Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://marc.info/?l=netfilter-devel\u0026m=165883202007292\u0026w=2"
          },
          {
            "name": "DSA-5207",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5207"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20220901-0007/"
          },
          {
            "name": "[debian-lts-announce] 20220911 [SECURITY] [DLA 3102-1] linux-5.10 new package",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html"
          },
          {
            "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99a63d36cb3ed5ca3aa6fcb64cffbeaf3b0fb164"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-36946",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:27:06.847869Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-05T16:13:27.647Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
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  CVE-2022-2588 (GCVE-0-2022-2588)
Vulnerability from cvelistv5
Published
2024-01-08 17:50
      Modified
2025-05-22 18:23
      
          Severity ?
        
        
      
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          
        Summary
It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
            
          
        References
          | URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 | |||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
        | Vendor | Product | Version | ||
|---|---|---|---|---|
| The Linux Kernel Organization | linux | Version: 0   ≤ | 
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  CVE-2021-33656 (GCVE-0-2021-33656)
Vulnerability from cvelistv5
Published
2022-07-18 14:44
      Modified
2024-08-03 23:58
      
          Severity ?
        
        
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - CWE-787 - Out-of-bounds Write
Summary
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
            
          
        References
          | URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 | ||||||||||||||
Impacted products
        | Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | openEuler:kernel | Version: <5.10.127 | 
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  CVE-2022-33740 (GCVE-0-2022-33740)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
      Modified
2024-08-03 08:09
      
          Severity ?
        
        
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
            
          
        References
          | URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
 | |||||||||||||||||||||||
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  CVE-2021-33061 (GCVE-0-2021-33061)
Vulnerability from cvelistv5
Published
2022-02-09 22:04
      Modified
2025-05-05 16:52
      
          Severity ?
        
        
      
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - denial of service
Summary
Insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters may allow an authenticated user to potentially enable denial of service via local access.
            
          
        References
          | URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
| 
 | ||||||||
Impacted products
        | Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | Intel(R) 82599 Ethernet Controllers and Adapters | Version: See references | 
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  CVE-2022-33741 (GCVE-0-2022-33741)
Vulnerability from cvelistv5
Published
2022-07-05 12:50
      Modified
2024-08-03 08:09
      
          Severity ?
        
        
          VLAI Severity ?
        
        
          EPSS score ?
        
        CWE
          - unknown
Summary
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
            
          
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          | URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 
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          "url": "http://www.openwall.com/lists/oss-security/2022/07/05/6"
        },
        {
          "name": "FEDORA-2022-c4ec706488",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"
        },
        {
          "name": "FEDORA-2022-2c9f8224f8",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"
        },
        {
          "name": "DSA-5191",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5191"
        },
        {
          "name": "[debian-lts-announce] 20221002 [SECURITY] [DLA 3131-1] linux security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@xen.org",
          "ID": "CVE-2022-33741",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Linux",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "?",
                            "version_value": "consult Xen advisory XSA-403"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Linux"
              },
              {
                "product": {
                  "product_data": [
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                      "product_name": "xen",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "?",
                            "version_value": "consult Xen advisory XSA-403"
                          }
                        ]
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                    }
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                "vendor_name": "Xen"
              }
            ]
          }
        },
        "configuration": {
          "configuration_data": {
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                  "lang": "eng",
                  "value": "All Linux guests using PV devices are vulnerable in case potentially\nmalicious PV device backends are being used."
                }
              ]
            }
          }
        },
        "credit": {
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            "description": {
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                  "value": "The issue related to not zeroing memory areas used for shared communications\nwas discovered by Roger Pau Monn\u00e9 of Citrix.\n\nThe issue related to leaking contiguous data in granted pages was disclosed\npublicly."
                }
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              "value": "Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don\u0027t zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn\u0027t allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742)."
            }
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                  "value": "An untrusted backend can access data not intended to be shared.  If such\nmappings are made with write permissions the backend could also cause\nmalfunctions and/or crashes to consumers of contiguous data in the shared\npages."
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              "url": "https://xenbits.xenproject.org/xsa/advisory-403.txt"
            },
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGFTRZ66KQYTSYIRT5FRHF5D6O72NWOP/"
            },
            {
              "name": "FEDORA-2022-2c9f8224f8",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RKRXZ4LHGCGMOG24ZCEJNY6R2BTS4S2Q/"
            },
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              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2022/dsa-5191"
            },
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            }
          ]
        },
        "workaround": {
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              "description_data": [
                {
                  "lang": "eng",
                  "value": "There is no mitigation available other than not using PV devices in case\na backend is suspected to be potentially malicious."
                }
              ]
            }
          }
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  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2022-33741",
    "datePublished": "2022-07-05T12:50:33",
    "dateReserved": "2022-06-15T00:00:00",
    "dateUpdated": "2024-08-03T08:09:22.659Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}
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      Sightings
| Author | Source | Type | Date | 
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- 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.
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