usn-5018-1
Vulnerability from osv_ubuntu
It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-33909)
Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits for pointer operations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33200)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did not properly clear received fragments from memory in some situations. A physically proximate attacker could possibly use this issue to inject packets or expose sensitive information. (CVE-2020-24586)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation incorrectly handled encrypted fragments. A physically proximate attacker could possibly use this issue to decrypt fragments. (CVE-2020-24587)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation incorrectly handled EAPOL frames from unauthenticated senders. A physically proximate attacker could inject malicious packets to cause a denial of service (system crash). (CVE-2020-26139)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation could reassemble mixed encrypted and plaintext fragments. A physically proximate attacker could possibly use this issue to inject packets or exfiltrate selected fragments. (CVE-2020-26147)
It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)
Or Cohen and Nadav Markus discovered a use-after-free vulnerability in the nfc implementation in the Linux kernel. A privileged local attacker could use this issue to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-23134)
Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly prevent speculative loads in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-31829)
It was discovered that a race condition in the kernel Bluetooth subsystem could lead to use-after-free of slab objects. An attacker could use this issue to possibly execute arbitrary code. (CVE-2021-32399)
It was discovered that a use-after-free existed in the Bluetooth HCI driver of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33034)
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2020-24586",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2020-24587",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2020-26139",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-26147",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-26558",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-0129",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
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{
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{
"id": "CVE-2021-23134",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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},
{
"id": "CVE-2021-31829",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2021-32399",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2021-33034",
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{
"id": "CVE-2021-33909",
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"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "high",
"type": "Ubuntu"
}
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"ecosystem": "Ubuntu:Pro:14.04:LTS"
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"id": "CVE-2020-24586",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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"id": "CVE-2020-24587",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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]
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{
"id": "CVE-2020-26139",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2020-26147",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2020-26558",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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]
},
{
"id": "CVE-2021-0129",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
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{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2021-23134",
"severity": [
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"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2021-31829",
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2021-32399",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
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{
"id": "CVE-2021-33034",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2021-33909",
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"type": "CVSS_V3"
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"type": "Ubuntu"
}
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"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
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{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2020-24587",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2020-26139",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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},
{
"id": "CVE-2020-26147",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2020-26558",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
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{
"score": "medium",
"type": "Ubuntu"
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{
"id": "CVE-2021-0129",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
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{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
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{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "linux-buildinfo-4.15.0-1109-snapdragon",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-headers-4.15.0-1109-snapdragon",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-image-4.15.0-1109-snapdragon",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-modules-4.15.0-1109-snapdragon",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-snapdragon-headers-4.15.0-1109",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-snapdragon-tools-4.15.0-1109",
"binary_version": "4.15.0-1109.118"
},
{
"binary_name": "linux-tools-4.15.0-1109-snapdragon",
"binary_version": "4.15.0-1109.118"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "linux-snapdragon",
"purl": "pkg:deb/ubuntu/linux-snapdragon@4.15.0-1109.118?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.15.0-1109.118"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.4.0-1077.82",
"4.4.0-1078.83",
"4.4.0-1079.84",
"4.4.0-1081.86",
"4.15.0-1053.57",
"4.15.0-1054.58",
"4.15.0-1055.59",
"4.15.0-1057.62",
"4.15.0-1058.64",
"4.15.0-1060.66",
"4.15.0-1062.69",
"4.15.0-1064.71",
"4.15.0-1065.72",
"4.15.0-1066.73",
"4.15.0-1067.74",
"4.15.0-1069.76",
"4.15.0-1070.77",
"4.15.0-1071.78",
"4.15.0-1072.79",
"4.15.0-1074.81",
"4.15.0-1076.83",
"4.15.0-1077.84",
"4.15.0-1079.86",
"4.15.0-1080.87",
"4.15.0-1081.88",
"4.15.0-1083.91",
"4.15.0-1084.92",
"4.15.0-1086.94",
"4.15.0-1087.95",
"4.15.0-1089.98",
"4.15.0-1090.99",
"4.15.0-1091.100",
"4.15.0-1093.102",
"4.15.0-1094.103",
"4.15.0-1095.104",
"4.15.0-1096.105",
"4.15.0-1097.106",
"4.15.0-1098.107",
"4.15.0-1099.108",
"4.15.0-1100.109",
"4.15.0-1101.110",
"4.15.0-1102.111",
"4.15.0-1103.112",
"4.15.0-1106.115"
]
}
],
"aliases": [],
"details": "It was discovered that the virtual file system implementation in the Linux\nkernel contained an unsigned to signed integer conversion error. A local\nattacker could use this to cause a denial of service (system crash) or\nexecute arbitrary code. (CVE-2021-33909)\n\nPiotr Krysiuk discovered that the eBPF implementation in the Linux kernel\ndid not properly enforce limits for pointer operations. A local attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2021-33200)\n\nMathy Vanhoef discovered that the Linux kernel\u2019s WiFi implementation did\nnot properly clear received fragments from memory in some situations. A\nphysically proximate attacker could possibly use this issue to inject\npackets or expose sensitive information. (CVE-2020-24586)\n\nMathy Vanhoef discovered that the Linux kernel\u2019s WiFi implementation\nincorrectly handled encrypted fragments. A physically proximate attacker\ncould possibly use this issue to decrypt fragments. (CVE-2020-24587)\n\nMathy Vanhoef discovered that the Linux kernel\u2019s WiFi implementation\nincorrectly handled EAPOL frames from unauthenticated senders. A physically\nproximate attacker could inject malicious packets to cause a denial of\nservice (system crash). (CVE-2020-26139)\n\nMathy Vanhoef discovered that the Linux kernel\u2019s WiFi implementation could\nreassemble mixed encrypted and plaintext fragments. A physically proximate\nattacker could possibly use this issue to inject packets or exfiltrate\nselected fragments. (CVE-2020-26147)\n\nIt was discovered that the bluetooth subsystem in the Linux kernel did not\nproperly perform access control. An authenticated attacker could possibly\nuse this to expose sensitive information. (CVE-2020-26558, CVE-2021-0129)\n\nOr Cohen and Nadav Markus discovered a use-after-free vulnerability in the\nnfc implementation in the Linux kernel. A privileged local attacker could\nuse this issue to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2021-23134)\n\nPiotr Krysiuk discovered that the eBPF implementation in the Linux kernel\ndid not properly prevent speculative loads in certain situations. A local\nattacker could use this to expose sensitive information (kernel memory).\n(CVE-2021-31829)\n\nIt was discovered that a race condition in the kernel Bluetooth subsystem\ncould lead to use-after-free of slab objects. An attacker could use this\nissue to possibly execute arbitrary code. (CVE-2021-32399)\n\nIt was discovered that a use-after-free existed in the Bluetooth HCI driver\nof the Linux kernel. A local attacker could use this to cause a denial of\nservice (system crash) or possibly execute arbitrary code. (CVE-2021-33034)\n",
"id": "USN-5018-1",
"modified": "2026-06-29T10:52:50Z",
"published": "2021-07-20T22:11:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5018-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-24586"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-24587"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-26139"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-26147"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-26558"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-0129"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-23134"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-31829"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-32399"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-33034"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-33200"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-33909"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities",
"upstream": [
"UBUNTU-CVE-2020-24586",
"UBUNTU-CVE-2020-24587",
"UBUNTU-CVE-2020-26139",
"UBUNTU-CVE-2020-26147",
"UBUNTU-CVE-2020-26558",
"UBUNTU-CVE-2021-0129",
"UBUNTU-CVE-2021-23134",
"UBUNTU-CVE-2021-31829",
"UBUNTU-CVE-2021-32399",
"UBUNTU-CVE-2021-33034",
"UBUNTU-CVE-2021-33200",
"UBUNTU-CVE-2021-33909"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.