cve-2022-48809
Vulnerability from cvelistv5
Published
2024-07-16 11:43
Modified
2024-11-04 12:16
Severity ?
EPSS score ?
Summary
net: fix a memleak when uncloning an skb dst and its metadata
References
Impacted products
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T15:25:01.534Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108"
},
{
"tags": [
"x_transferred"
],
"url": "https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2022-48809",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T16:58:37.940393Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-09-11T17:34:13.409Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"include/net/dst_metadata.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "4ac84498fbe8",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "c1ff27d100e2",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "0be943916d78",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "a80817adc2a4",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "00e6d6c3bc14",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "fdcb263fa5cd",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "8b1087b998e2",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
},
{
"lessThan": "9eeabdf17fa0",
"status": "affected",
"version": "fc4099f17240",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/net/dst_metadata.h"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "4.3"
},
{
"lessThan": "4.3",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.302",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.267",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.230",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.180",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.101",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.24",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"version": "5.16.10",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"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."
}
],
"providerMetadata": {
"dateUpdated": "2024-11-04T12:16:59.775Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4"
},
{
"url": "https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540"
},
{
"url": "https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a"
},
{
"url": "https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88"
},
{
"url": "https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1"
},
{
"url": "https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314"
},
{
"url": "https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108"
},
{
"url": "https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613"
}
],
"title": "net: fix a memleak when uncloning an skb dst and its metadata",
"x_generator": {
"engine": "bippy-9e1c9544281a"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-48809",
"datePublished": "2024-07-16T11:43:59.757Z",
"dateReserved": "2024-07-16T11:38:08.897Z",
"dateUpdated": "2024-11-04T12:16:59.775Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2022-48809\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:05.190\",\"lastModified\":\"2024-11-21T07:34:07.787\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: soluciona un memleak al desaclonar un skb dst y sus metadatos Al desaclonar un skb dst y sus metadatos asociados, se asigna un nuevo dst+metadatos que luego reemplaza al antiguo en el skb. Esto es \u00fatil para tener metadatos dst+ no compartidos adjuntos a un skb espec\u00edfico. El problema es que los metadatos dst+ no clonados se inicializan con un recuento de 1, que se incrementa a 2 antes de adjuntarlo al skb. Cuando tun_dst_unclone regresa, solo se hace referencia a los metadatos dst+ desde un \u00fanico lugar (el skb) mientras su refcount es 2. Su refcount nunca bajar\u00e1 a 0 (cuando se consume el skb), lo que provoca una p\u00e9rdida de memoria. Solucione este problema eliminando la llamada a dst_hold en tun_dst_unclone, ya que el recuento de metadatos dst+ ya es 1.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.3\",\"versionEndExcluding\":\"4.9.302\",\"matchCriteriaId\":\"72C5D0FA-1645-4649-A21B-6D40B49AA943\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.267\",\"matchCriteriaId\":\"FD3CEBEB-60B8-4EA2-B346-6ADF49F754D9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.230\",\"matchCriteriaId\":\"62845903-4271-4AFA-B8B7-6517ED5BFEB2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.180\",\"matchCriteriaId\":\"6808B38F-AD73-4D55-A158-6EF605E8EB66\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.101\",\"matchCriteriaId\":\"A154171E-A3B9-42BE-9E97-C9B0EA43FC54\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.24\",\"matchCriteriaId\":\"866451F0-299E-416C-B0B8-AE6B33E62CCA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.10\",\"matchCriteriaId\":\"679523BA-1392-404B-AB85-F5A5408B1ECC\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/00e6d6c3bc14dfe32824e2c515f0e0f2d6ecf2f1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0be943916d781df2b652793bb2d3ae4f9624c10a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4ac84498fbe84a00e7aef185e2bb3e40ce71eca4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8b1087b998e273f07be13dcb5f3ca4c309c7f108\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9eeabdf17fa0ab75381045c867c370f4cc75a613\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a80817adc2a4c1ba26a7aa5f3ed886e4a18dff88\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c1ff27d100e2670b03cbfddb9117e5f9fc672540\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fdcb263fa5cda15b8cb24a641fa2718c47605314\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.