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-2022-48809",
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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": "2024-07-16T11:38:08.897Z",
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"datePublished": "2024-07-16T11:43:59.757Z",
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"dateUpdated": "2026-05-11T18:47:33.230Z"
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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": "2026-05-11T18:47:33.230Z"
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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: fix a memleak when uncloning an skb dst and its metadata\n\nWhen uncloning an skb dst and its associated metadata, a new\ndst+metadata is allocated and later replaces the old one in the skb.\nThis is helpful to have a non-shared dst+metadata attached to a specific\nskb.\n\nThe issue is the uncloned dst+metadata is initialized with a refcount of\n1, which is increased to 2 before attaching it to the skb. When\ntun_dst_unclone returns, the dst+metadata is only referenced from a\nsingle place (the skb) while its refcount is 2. Its refcount will never\ndrop to 0 (when the skb is consumed), leading to a memory leak.\n\nFix this by removing the call to dst_hold in tun_dst_unclone, as the\ndst+metadata refcount is already 1."
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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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"include/net/dst_metadata.h"
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],
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"versions": [
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{
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"version": "fc4099f17240767554ff3a73977acb78ef615404",
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"lessThan": "4ac84498fbe84a00e7aef185e2bb3e40ce71eca4",
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"status": "affected",
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},
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{
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"version": "fc4099f17240767554ff3a73977acb78ef615404",
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"lessThan": "c1ff27d100e2670b03cbfddb9117e5f9fc672540",
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"status": "affected",
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{
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"version": "fc4099f17240767554ff3a73977acb78ef615404",
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"lessThan": "0be943916d781df2b652793bb2d3ae4f9624c10a",
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"status": "affected",
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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": "fc4099f17240767554ff3a73977acb78ef615404",
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"lessThan": "00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1",
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"status": "affected",
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},
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{
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"version": "fc4099f17240767554ff3a73977acb78ef615404",
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"lessThan": "fdcb263fa5cda15b8cb24a641fa2718c47605314",
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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": "fc4099f17240767554ff3a73977acb78ef615404",
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"status": "affected",
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{
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"version": "fc4099f17240767554ff3a73977acb78ef615404",
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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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"include/net/dst_metadata.h"
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],
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"versions": [
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{
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"version": "4.3",
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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": "4.3",
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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": "4.9.302",
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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": "4.14.267",
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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": "4.19.230",
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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": "5.4.180",
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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": "5.10.101",
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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": "5.15.24",
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"lessThanOrEqual": "5.15.*",
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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": "5.16.10",
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"lessThanOrEqual": "5.16.*",
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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": "5.17",
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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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"operator": "OR",
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"versionStartIncluding": "4.3",
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"versionEndExcluding": "4.9.302"
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}
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],
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"title": "net: fix a memleak when uncloning an skb dst and its metadata",
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"metrics": [
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"type": "ssvc",
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"content": {
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"id": "CVE-2022-48809",
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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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"Technical Impact": "partial"
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T16:58:37.940393Z"
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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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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-11T17:34:13.409Z"
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