340 lines
16 KiB
JSON
340 lines
16 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2021-47249",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-04-10T18:59:19.536Z",
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"datePublished": "2024-05-21T14:19:46.238Z",
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"dateUpdated": "2026-05-11T13:50:50.679Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T13:50:50.679Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"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 | }"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/rds/recv.c"
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],
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"versions": [
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "423c6939758fb3b9cf5abbd1e7792068a5c4ae8c",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "1f79bc8ae81c05eb112a53f981cb2c244ee50d02",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "06b7cb0194bd1ede0dd27f3a946e7c0279fba44a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "2038cd15eacdf7512755c27686822e0052eb9042",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "5946fbf48355f5a8caeff72580c7658da5966b86",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "b25b60d076164edb3025e85aabd2cf50a5215b91",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "bdbe6fbc6a2f2ccfb384b141b257677d2a8d36fb",
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"lessThan": "49bfcbfd989a8f1f23e705759a6bb099de2cff9f",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"net/rds/recv.c"
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],
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"versions": [
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{
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"version": "2.6.30",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "2.6.30",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.4.274",
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"lessThanOrEqual": "4.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.9.274",
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"lessThanOrEqual": "4.9.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.14.238",
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"lessThanOrEqual": "4.14.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.196",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.128",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.46",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.12.13",
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"lessThanOrEqual": "5.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.13",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "2.6.30",
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"versionEndExcluding": "4.4.274"
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"versionEndExcluding": "5.4.128"
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"versionEndExcluding": "5.12.13"
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],
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"references": [
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"url": "https://git.kernel.org/stable/c/8c3ec88b03e9e4ca117dcdc4204fd3edcd02084f"
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},
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{
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"url": "https://git.kernel.org/stable/c/423c6939758fb3b9cf5abbd1e7792068a5c4ae8c"
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"url": "https://git.kernel.org/stable/c/1f79bc8ae81c05eb112a53f981cb2c244ee50d02"
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{
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{
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}
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],
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"title": "net: rds: fix memory leak in rds_recvmsg",
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}
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"adp": [
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{
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"title": "CISA ADP Vulnrichment",
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2021-47249",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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],
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"version": "2.0.3",
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"timestamp": "2024-05-23T21:22:20.748261Z"
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