gsd-2023-4622
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.
The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.
We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2023-4622", "id": "GSD-2023-4622" }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2023-4622" ], "details": "A use-after-free vulnerability in the Linux kernel\u0027s af_unix component can be exploited to achieve local privilege escalation.\n\nThe unix_stream_sendpage() function tries to add data to the last skb in the peer\u0027s recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.\n\nWe recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.\n\n", "id": "GSD-2023-4622", "modified": "2023-12-13T01:20:26.798918Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "security@google.com", "ID": "CVE-2023-4622", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Kernel", "version": { "version_data": [ { "version_affected": "\u003c", "version_name": "4.2", "version_value": "6.1.47" } ] } } ] }, "vendor_name": "Linux" } ] } }, "credits": [ { "lang": "en", "value": "Billy Jheng Bing-Jhong" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "A use-after-free vulnerability in the Linux kernel\u0027s af_unix component can be exploited to achieve local privilege escalation.\n\nThe unix_stream_sendpage() function tries to add data to the last skb in the peer\u0027s recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.\n\nWe recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.\n\n" } ] }, "generator": { "engine": "Vulnogram 0.1.0-dev" }, "impact": { "cvss": [ { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "cweId": "CWE-416", "lang": "eng", "value": "CWE-416 Use After Free" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y\u0026id=790c2f9d15b594350ae9bca7b236f2b1859de02c", "refsource": "MISC", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y\u0026id=790c2f9d15b594350ae9bca7b236f2b1859de02c" }, { "name": "https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c", "refsource": "MISC", "url": "https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c" }, { "name": "https://www.debian.org/security/2023/dsa-5492", "refsource": "MISC", "url": "https://www.debian.org/security/2023/dsa-5492" }, { "name": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html", "refsource": "MISC", "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html" }, { "name": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html" }, { "name": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html", "refsource": "MISC", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html" } ] }, "source": { "discovery": "EXTERNAL" } }, "nvd.nist.gov": { "cve": { "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E2B663A2-B1DE-4295-920F-3DEB478483C2", "versionEndExcluding": "6.1.47", "versionStartIncluding": "4.2", "vulnerable": true } ], "negate": false, "operator": "OR" } ] }, { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true }, { "criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "descriptions": [ { "lang": "en", "value": "A use-after-free vulnerability in the Linux kernel\u0027s af_unix component can be exploited to achieve local privilege escalation.\n\nThe unix_stream_sendpage() function tries to add data to the last skb in the peer\u0027s recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.\n\nWe recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c.\n\n" }, { "lang": "es", "value": "Se puede explotar una vulnerabilidad de use-after-free en el componente Linux kernel\u0027s af_unix para lograr una escalada de privilegios local. La funci\u00f3n unix_stream_sendpage() intenta a\u00f1adir datos al \u00faltimo skb en la cola peer\u0027s recv sin bloquear la cola. Por lo tanto, existe una carrera donde unix_stream_sendpage() podr\u00eda acceder a un skb sin bloqueo que est\u00e1 siendo liberado mediante la recolecci\u00f3n de basura, resultando en use-after-free. Recomendamos actualizar despu\u00e9s del commit 790c2f9d15b594350ae9bca7b236f2b1859de02c." } ], "id": "CVE-2023-4622", "lastModified": "2024-01-11T19:15:12.097", "metrics": { "cvssMetricV31": [ { "cvssData": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.0, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.0, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "cve-coordination@google.com", "type": "Secondary" } ] }, "published": "2023-09-06T14:15:12.193", "references": [ { "source": "cve-coordination@google.com", "url": "http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html" }, { "source": "cve-coordination@google.com", "tags": [ "Issue Tracking", "Mailing List", "Patch", "Vendor Advisory" ], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-6.1.y\u0026id=790c2f9d15b594350ae9bca7b236f2b1859de02c" }, { "source": "cve-coordination@google.com", "tags": [ "Patch", "Vendor Advisory" ], "url": "https://kernel.dance/790c2f9d15b594350ae9bca7b236f2b1859de02c" }, { "source": "cve-coordination@google.com", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html" }, { "source": "cve-coordination@google.com", "url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html" }, { "source": "cve-coordination@google.com", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2023/dsa-5492" } ], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-416" } ], "source": "nvd@nist.gov", "type": "Primary" }, { "description": [ { "lang": "en", "value": "CWE-416" } ], "source": "cve-coordination@google.com", "type": "Secondary" } ] } } } }
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- 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.