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| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: synproxy: Fix out of bounds when parsing TCP options\n\nThe TCP option parser in synproxy (synproxy_parse_options) could read\none byte out of bounds. When the length is 1, the execution flow gets\ninto the loop, reads one byte of the opcode, and if the opcode is\nneither TCPOPT_EOL nor TCPOPT_NOP, it reads one more byte, which exceeds\nthe length of 1.\n\nThis fix is inspired by commit 9609dad263f8 (\"ipv4: tcp_input: fix stack\nout of bounds when parsing TCP options.\").\n\nv2 changes:\n\nAdded an early return when length < 0 to avoid calling\nskb_header_pointer with negative length." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/netfilter/nf_synproxy_core.c" |
| ], |
| "versions": [ |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "576c1526b4d83c44ad7b673cb841f36cbc6cb6c4", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "674b5f0c6a4fc5d3abce877048290cea6091fcb1", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "7d9a9a1a88a3da574e019b4de756bc73337b3b0b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "6defc77d48eff74075b80ad5925061b2fc010d98", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "9cdf299ba4e153b5e56187648420de22c6216f02", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "f648089337cb8ed40b2bb96e244f72b9d97dc96b", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "48b1de4c110a7afa4b85862f6c75af817db26fad", |
| "lessThan": "5fc177ab759418c9537433e63301096e733fb915", |
| "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/netfilter/nf_synproxy_core.c" |
| ], |
| "versions": [ |
| { |
| "version": "3.12", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "3.12", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.4.274", |
| "lessThanOrEqual": "4.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.9.274", |
| "lessThanOrEqual": "4.9.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.14.238", |
| "lessThanOrEqual": "4.14.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.19.196", |
| "lessThanOrEqual": "4.19.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.4.128", |
| "lessThanOrEqual": "5.4.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.10.46", |
| "lessThanOrEqual": "5.10.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.12.13", |
| "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": "3.12", |
| "versionEndExcluding": "4.4.274" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "4.9.274" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "4.14.238" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "4.19.196" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "5.4.128" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "5.10.46" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "5.12.13" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "3.12", |
| "versionEndExcluding": "5.13" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/e1eb98cfeafdd85537e7e3cefe93ca9bfbcc3ea8" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/576c1526b4d83c44ad7b673cb841f36cbc6cb6c4" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/674b5f0c6a4fc5d3abce877048290cea6091fcb1" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/7d9a9a1a88a3da574e019b4de756bc73337b3b0b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/6defc77d48eff74075b80ad5925061b2fc010d98" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/9cdf299ba4e153b5e56187648420de22c6216f02" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/f648089337cb8ed40b2bb96e244f72b9d97dc96b" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/5fc177ab759418c9537433e63301096e733fb915" |
| } |
| ], |
| "title": "netfilter: synproxy: Fix out of bounds when parsing TCP options", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47245", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
