| { |
| "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: rds: fix memory leak in rds_recvmsg\n\nSyzbot reported memory leak in rds. The problem\nwas in unputted refcount in case of error.\n\nint rds_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,\n\t\tint msg_flags)\n{\n...\n\n\tif (!rds_next_incoming(rs, &inc)) {\n\t\t...\n\t}\n\nAfter this \"if\" inc refcount incremented and\n\n\tif (rds_cmsg_recv(inc, msg, rs)) {\n\t\tret = -EFAULT;\n\t\tgoto out;\n\t}\n...\nout:\n\treturn ret;\n}\n\nin case of rds_cmsg_recv() fail the refcount won't be\ndecremented. And it's easy to see from ftrace log, that\nrds_inc_addref() don't have rds_inc_put() pair in\nrds_recvmsg() after rds_cmsg_recv()\n\n 1) | rds_recvmsg() {\n 1) 3.721 us | rds_inc_addref();\n 1) 3.853 us | rds_message_inc_copy_to_user();\n 1) + 10.395 us | rds_cmsg_recv();\n 1) + 34.260 us | }" |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "net/rds/recv.c" |
| ], |
| "versions": [ |
| { |
| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "423c6939758fb3b9cf5abbd1e7792068a5c4ae8c", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "1f79bc8ae81c05eb112a53f981cb2c244ee50d02", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
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| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "2038cd15eacdf7512755c27686822e0052eb9042", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "5946fbf48355f5a8caeff72580c7658da5966b86", |
| "status": "affected", |
| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
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| "versionType": "git" |
| }, |
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| "version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb", |
| "lessThan": "49bfcbfd989a8f1f23e705759a6bb099de2cff9f", |
| "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/rds/recv.c" |
| ], |
| "versions": [ |
| { |
| "version": "2.6.30", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "2.6.30", |
| "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": "2.6.30", |
| "versionEndExcluding": "4.4.274" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "2.6.30", |
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| }, |
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| }, |
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| }, |
| { |
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| }, |
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| } |
| ] |
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| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/423c6939758fb3b9cf5abbd1e7792068a5c4ae8c" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/1f79bc8ae81c05eb112a53f981cb2c244ee50d02" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/06b7cb0194bd1ede0dd27f3a946e7c0279fba44a" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/2038cd15eacdf7512755c27686822e0052eb9042" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/5946fbf48355f5a8caeff72580c7658da5966b86" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b25b60d076164edb3025e85aabd2cf50a5215b91" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/49bfcbfd989a8f1f23e705759a6bb099de2cff9f" |
| } |
| ], |
| "title": "net: rds: fix memory leak in rds_recvmsg", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47249", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
