| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/nfc: fix use-after-free llcp_sock_bind/connect\n\nCommits 8a4cd82d (\"nfc: fix refcount leak in llcp_sock_connect()\")\nand c33b1cc62 (\"nfc: fix refcount leak in llcp_sock_bind()\")\nfixed a refcount leak bug in bind/connect but introduced a\nuse-after-free if the same local is assigned to 2 different sockets.\n\nThis can be triggered by the following simple program:\n int sock1 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP );\n int sock2 = socket( AF_NFC, SOCK_STREAM, NFC_SOCKPROTO_LLCP );\n memset( &addr, 0, sizeof(struct sockaddr_nfc_llcp) );\n addr.sa_family = AF_NFC;\n addr.nfc_protocol = NFC_PROTO_NFC_DEP;\n bind( sock1, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) )\n bind( sock2, (struct sockaddr*) &addr, sizeof(struct sockaddr_nfc_llcp) )\n close(sock1);\n close(sock2);\n\nFix this by assigning NULL to llcp_sock->local after calling\nnfc_llcp_local_put.\n\nThis addresses CVE-2021-23134." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/nfc/llcp_sock.c" |
| ], |
| "versions": [ |
| { |
| "version": "a1cdd18c49d23ec38097ac2c5b0d761146fc0109", |
| "lessThan": "26157c82ba756767b2bd66d28a71b1bc454447f6", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "18013007b596771bf5f5e7feee9586fb0386ad14", |
| "lessThan": "ccddad6dd28530e716448e594c9ca7c76ccd0570", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "538a6ff11516d38a61e237d2d2dc04c30c845fbe", |
| "lessThan": "18ae4a192a4496e48a5490b52812645d2413307c", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "adbb1d218c5f56dbae052765da83c0f57fce2a31", |
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| "versionType": "git" |
| }, |
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| "version": "c89903c9eff219a4695e63715cf922748d743f65", |
| "lessThan": "e32352070bcac22be6ed8ab635debc280bb65b8c", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "6fb003e5ae18d8cda4c8a1175d9dd8db12bec049", |
| "lessThan": "6b7021ed36dabf29e56842e3408781cd3b82ef6e", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "8c9e4971e142e2899606a2490b77a1208c1f4638", |
| "lessThan": "374cdde4dcc9c909a60713abdbbf96d5e3e09f91", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c33b1cc62ac05c1dbb1cdafe2eb66da01c76ca8d", |
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| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "c33b1cc62ac05c1dbb1cdafe2eb66da01c76ca8d", |
| "lessThan": "c61760e6940dd4039a7f5e84a6afc9cdbf4d82b6", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/nfc/llcp_sock.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.12", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.12", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.4.269", |
| "lessThanOrEqual": "4.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.9.269", |
| "lessThanOrEqual": "4.9.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.14.233", |
| "lessThanOrEqual": "4.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.191", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.119", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.37", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.11.21", |
| "lessThanOrEqual": "5.11.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.12.4", |
| "lessThanOrEqual": "5.12.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.13", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.4.267", |
| "versionEndExcluding": "4.4.269" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "4.9.267", |
| "versionEndExcluding": "4.9.269" |
| }, |
| { |
| "vulnerable": true, |
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| "versionStartIncluding": "4.14.231", |
| "versionEndExcluding": "4.14.233" |
| }, |
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| "versionEndExcluding": "4.19.191" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.4.112", |
| "versionEndExcluding": "5.4.119" |
| }, |
| { |
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| "versionEndExcluding": "5.10.37" |
| }, |
| { |
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| "versionStartIncluding": "5.11.14", |
| "versionEndExcluding": "5.11.21" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.12", |
| "versionEndExcluding": "5.12.4" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.12", |
| "versionEndExcluding": "5.13" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/26157c82ba756767b2bd66d28a71b1bc454447f6" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/ccddad6dd28530e716448e594c9ca7c76ccd0570" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/18ae4a192a4496e48a5490b52812645d2413307c" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/48fba458fe54cc2a980a05c13e6c19b8b2cfb610" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/e32352070bcac22be6ed8ab635debc280bb65b8c" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6b7021ed36dabf29e56842e3408781cd3b82ef6e" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/374cdde4dcc9c909a60713abdbbf96d5e3e09f91" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/18175fe17ae043a0b81e5d511f8817825784c299" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c61760e6940dd4039a7f5e84a6afc9cdbf4d82b6" |
| } |
| ], |
| "title": "net/nfc: fix use-after-free llcp_sock_bind/connect", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47068", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
