cve-2024-46682
Vulnerability from cvelistv5
Published
2024-09-13 05:29
Modified
2024-12-19 09:20
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open
Prior to commit 3f29cc82a84c ("nfsd: split sc_status out of
sc_type") states_show() relied on sc_type field to be of valid
type before calling into a subfunction to show content of a
particular stateid. From that commit, we split the validity of
the stateid into sc_status and no longer changed sc_type to 0
while unhashing the stateid. This resulted in kernel oopsing
for nfsv4.0 opens that stay around and in nfs4_show_open()
would derefence sc_file which was NULL.
Instead, for closed open stateids forgo displaying information
that relies of having a valid sc_file.
To reproduce: mount the server with 4.0, read and close
a file and then on the server cat /proc/fs/nfsd/clients/2/states
[ 513.590804] Call trace:
[ 513.590925] _raw_spin_lock+0xcc/0x160
[ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd]
[ 513.591412] states_show+0x44c/0x488 [nfsd]
[ 513.591681] seq_read_iter+0x5d8/0x760
[ 513.591896] seq_read+0x188/0x208
[ 513.592075] vfs_read+0x148/0x470
[ 513.592241] ksys_read+0xcc/0x178
References
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-46682",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-29T15:09:15.742949Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-09-29T15:09:29.944Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/nfsd/nfs4state.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "ba0b697de298285301c71c258598226e06494236",
"status": "affected",
"version": "3f29cc82a84c23cfd12b903029dd26002ca825f5",
"versionType": "git"
},
{
"lessThan": "a204501e1743d695ca2930ed25a2be9f8ced96d3",
"status": "affected",
"version": "3f29cc82a84c23cfd12b903029dd26002ca825f5",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/nfsd/nfs4state.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"lessThan": "6.9",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"version": "6.10.8",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open\n\nPrior to commit 3f29cc82a84c (\"nfsd: split sc_status out of\nsc_type\") states_show() relied on sc_type field to be of valid\ntype before calling into a subfunction to show content of a\nparticular stateid. From that commit, we split the validity of\nthe stateid into sc_status and no longer changed sc_type to 0\nwhile unhashing the stateid. This resulted in kernel oopsing\nfor nfsv4.0 opens that stay around and in nfs4_show_open()\nwould derefence sc_file which was NULL.\n\nInstead, for closed open stateids forgo displaying information\nthat relies of having a valid sc_file.\n\nTo reproduce: mount the server with 4.0, read and close\na file and then on the server cat /proc/fs/nfsd/clients/2/states\n\n[ 513.590804] Call trace:\n[ 513.590925] _raw_spin_lock+0xcc/0x160\n[ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd]\n[ 513.591412] states_show+0x44c/0x488 [nfsd]\n[ 513.591681] seq_read_iter+0x5d8/0x760\n[ 513.591896] seq_read+0x188/0x208\n[ 513.592075] vfs_read+0x148/0x470\n[ 513.592241] ksys_read+0xcc/0x178"
}
],
"providerMetadata": {
"dateUpdated": "2024-12-19T09:20:52.369Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/ba0b697de298285301c71c258598226e06494236"
},
{
"url": "https://git.kernel.org/stable/c/a204501e1743d695ca2930ed25a2be9f8ced96d3"
}
],
"title": "nfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-46682",
"datePublished": "2024-09-13T05:29:15.294Z",
"dateReserved": "2024-09-11T15:12:18.248Z",
"dateUpdated": "2024-12-19T09:20:52.369Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-46682\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-13T06:15:12.793\",\"lastModified\":\"2024-09-13T16:52:02.067\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: prevent panic for nfsv4.0 closed files in nfs4_show_open\\n\\nPrior to commit 3f29cc82a84c (\\\"nfsd: split sc_status out of\\nsc_type\\\") states_show() relied on sc_type field to be of valid\\ntype before calling into a subfunction to show content of a\\nparticular stateid. From that commit, we split the validity of\\nthe stateid into sc_status and no longer changed sc_type to 0\\nwhile unhashing the stateid. This resulted in kernel oopsing\\nfor nfsv4.0 opens that stay around and in nfs4_show_open()\\nwould derefence sc_file which was NULL.\\n\\nInstead, for closed open stateids forgo displaying information\\nthat relies of having a valid sc_file.\\n\\nTo reproduce: mount the server with 4.0, read and close\\na file and then on the server cat /proc/fs/nfsd/clients/2/states\\n\\n[ 513.590804] Call trace:\\n[ 513.590925] _raw_spin_lock+0xcc/0x160\\n[ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd]\\n[ 513.591412] states_show+0x44c/0x488 [nfsd]\\n[ 513.591681] seq_read_iter+0x5d8/0x760\\n[ 513.591896] seq_read+0x188/0x208\\n[ 513.592075] vfs_read+0x148/0x470\\n[ 513.592241] ksys_read+0xcc/0x178\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nfsd: evitar p\u00e1nico para archivos cerrados nfsv4.0 en nfs4_show_open Antes del commit 3f29cc82a84c (\\\"nfsd: separar sc_status de sc_type\\\") states_show() depend\u00eda de que el campo sc_type fuera de un tipo v\u00e1lido antes de llamar a una subfunci\u00f3n para mostrar el contenido de un stateid en particular. A partir de esa confirmaci\u00f3n, dividimos la validez del stateid en sc_status y ya no cambiamos sc_type a 0 mientras deshacemos el hash del stateid. Esto result\u00f3 en un error del kernel para las aperturas nfsv4.0 que permanecen y en nfs4_show_open() se desreferenciaba sc_file que era NULL. En cambio, para los stateids abiertos y cerrados, renunciamos a mostrar informaci\u00f3n que depende de tener un sc_file v\u00e1lido. Para reproducir: monte el servidor con 4.0, lea y cierre un archivo y luego en el servidor cat /proc/fs/nfsd/clients/2/states [ 513.590804] Rastreo de llamadas: [ 513.590925] _raw_spin_lock+0xcc/0x160 [ 513.591119] nfs4_show_open+0x78/0x2c0 [nfsd] [ 513.591412] states_show+0x44c/0x488 [nfsd] [ 513.591681] seq_read_iter+0x5d8/0x760 [ 513.591896] seq_read+0x188/0x208 [ 513.592075] vfs_read+0x148/0x470 [513.592241] ksys_read+0xcc/0x178\"}],\"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-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.9\",\"versionEndExcluding\":\"6.10.8\",\"matchCriteriaId\":\"0BCC4AEF-4876-4CFA-B9D6-F98855E75E74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a204501e1743d695ca2930ed25a2be9f8ced96d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ba0b697de298285301c71c258598226e06494236\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"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.