313 lines
14 KiB
JSON
313 lines
14 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-2021-47231",
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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": "2024-04-10T18:59:19.530Z",
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"datePublished": "2024-05-21T14:19:34.413Z",
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"dateUpdated": "2026-05-11T13:50:29.828Z"
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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": "2026-05-11T13:50:29.828Z"
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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\ncan: mcba_usb: fix memory leak in mcba_usb\n\nSyzbot reported memory leak in SocketCAN driver for Microchip CAN BUS\nAnalyzer Tool. The problem was in unfreed usb_coherent.\n\nIn mcba_usb_start() 20 coherent buffers are allocated and there is\nnothing, that frees them:\n\n1) In callback function the urb is resubmitted and that's all\n2) In disconnect function urbs are simply killed, but URB_FREE_BUFFER\n is not set (see mcba_usb_start) and this flag cannot be used with\n coherent buffers.\n\nFail log:\n| [ 1354.053291][ T8413] mcba_usb 1-1:0.0 can0: device disconnected\n| [ 1367.059384][ T8420] kmemleak: 20 new suspected memory leaks (see /sys/kernel/debug/kmem)\n\nSo, all allocated buffers should be freed with usb_free_coherent()\nexplicitly\n\nNOTE:\nThe same pattern for allocating and freeing coherent buffers\nis used in drivers/net/can/usb/kvaser_usb/kvaser_usb_core.c"
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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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"drivers/net/can/usb/mcba_usb.c"
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],
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"versions": [
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{
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"version": "51f3baad7de943780ce0c17bd7975df567dd6e14",
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"lessThan": "89df95ce32be204eef2e7d4b2f6fb552fb191a68",
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"status": "affected",
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"versionType": "git"
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{
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"version": "51f3baad7de943780ce0c17bd7975df567dd6e14",
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"lessThan": "a115198caaab6d663bef75823a3c5f0802306d60",
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"status": "affected",
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"status": "affected",
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{
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"version": "51f3baad7de943780ce0c17bd7975df567dd6e14",
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"lessThan": "d0760a4ef85697bc756d06eae17ae27f3f055401",
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"status": "affected",
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{
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"lessThan": "91c02557174be7f72e46ed7311e3bea1939840b0",
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"status": "affected",
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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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"drivers/net/can/usb/mcba_usb.c"
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],
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"versions": [
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{
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"version": "4.12",
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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": "4.12",
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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": "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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{
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"nodes": [
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{
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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": "4.12",
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"versionEndExcluding": "4.14.238"
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},
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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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"versionEndExcluding": "4.19.196"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/89df95ce32be204eef2e7d4b2f6fb552fb191a68"
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},
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{
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"url": "https://git.kernel.org/stable/c/a115198caaab6d663bef75823a3c5f0802306d60"
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},
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{
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"url": "https://git.kernel.org/stable/c/6f87c0e21ad20dd3d22108e33db1c552dfa352a0"
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{
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"url": "https://git.kernel.org/stable/c/6bd3d80d1f019cefa7011056c54b323f1d8b8e83"
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},
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{
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"url": "https://git.kernel.org/stable/c/d0760a4ef85697bc756d06eae17ae27f3f055401"
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},
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{
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"url": "https://git.kernel.org/stable/c/91c02557174be7f72e46ed7311e3bea1939840b0"
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}
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],
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"title": "can: mcba_usb: fix memory leak in mcba_usb",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"shortName": "CVE",
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"dateUpdated": "2024-08-04T05:32:07.366Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"lang": "en",
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"description": "CWE-noinfo Not enough information"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-05-31T18:50:07.041810Z",
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"id": "CVE-2021-47231",
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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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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-11-06T19:45:06.470Z"
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}
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}
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]
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}
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} |