FKIE_CVE-2021-47340
Vulnerability from fkie_nvd - Published: 2024-05-21 15:15 - Updated: 2026-06-17 04:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
jfs: fix GPF in diFree
Avoid passing inode with
JFS_SBI(inode->i_sb)->ipimap == NULL to
diFree()[1]. GFP will appear:
struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap;
struct inomap *imap = JFS_IP(ipimap)->i_imap;
JFS_IP() will return invalid pointer when ipimap == NULL
Call Trace:
diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1]
jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154
evict+0x2ed/0x750 fs/inode.c:578
iput_final fs/inode.c:1654 [inline]
iput.part.0+0x3fe/0x820 fs/inode.c:1680
iput+0x58/0x70 fs/inode.c:1670
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/jfs/inode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "7bde24bde490f3139eee147efc6d60d6040fe975",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "745c9a59422c63f661f4374ed5181740db4130a1",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "49def1b0644892e3b113673c13d650c3060b43bc",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "aff8d95b69051d0cf4acc3d91f22299fdbb9dfb3",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "8018936950360f1c503bb385e158cfc5e4945d18",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "3bb27e27240289b47d3466f647a55c567adbdc3a",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "42f102ea1943ecb10a0756bf75424de5d1d5beed",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
},
{
"lessThan": "9d574f985fe33efd6911f4d752de6f485a1ea732",
"status": "affected",
"version": "62aff86fdf18657d9eca7878654415f94f16d027",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/jfs/inode.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.36"
},
{
"lessThan": "2.6.36",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.4.*",
"status": "unaffected",
"version": "4.4.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.276",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.240",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.198",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.133",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.51",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"version": "5.12.18",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.13.*",
"status": "unaffected",
"version": "5.13.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "10282F37-B17F-4974-967E-FCD5ABC9AB8E",
"versionEndExcluding": "4.4.276",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C79FFC06-9530-4CD7-B651-01D786CC925E",
"versionEndExcluding": "4.9.276",
"versionStartIncluding": "4.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FB359B2E-773D-4D52-9915-E07A47ABE72B",
"versionEndExcluding": "4.14.240",
"versionStartIncluding": "4.10",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "B93AEDB9-C52B-4222-8F9A-882DAD9EF5B2",
"versionEndExcluding": "4.19.198",
"versionStartIncluding": "4.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "65A8F1FF-5639-455A-8BF4-9FF529240505",
"versionEndExcluding": "5.4.133",
"versionStartIncluding": "4.20",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "93289127-DFB3-4515-89DD-50521FF8B7FF",
"versionEndExcluding": "5.10.51",
"versionStartIncluding": "5.5",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "79D13C82-E06F-4A70-A3D1-C09494FBC94D",
"versionEndExcluding": "5.12.18",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "853187F6-707A-487B-95C0-621B5211B43C",
"versionEndExcluding": "5.13.3",
"versionStartIncluding": "5.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix GPF in diFree\n\nAvoid passing inode with\nJFS_SBI(inode-\u003ei_sb)-\u003eipimap == NULL to\ndiFree()[1]. GFP will appear:\n\n\tstruct inode *ipimap = JFS_SBI(ip-\u003ei_sb)-\u003eipimap;\n\tstruct inomap *imap = JFS_IP(ipimap)-\u003ei_imap;\n\nJFS_IP() will return invalid pointer when ipimap == NULL\n\nCall Trace:\n diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1]\n jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154\n evict+0x2ed/0x750 fs/inode.c:578\n iput_final fs/inode.c:1654 [inline]\n iput.part.0+0x3fe/0x820 fs/inode.c:1680\n iput+0x58/0x70 fs/inode.c:1670"
},
{
"lang": "es",
"value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: jfs: corrige GPF en diFree. Evite pasar el inodo con JFS_SBI(inode-\u0026gt;i_sb)-\u0026gt;ipimap == NULL a diFree()[1]. Aparecer\u00e1 GFP: struct inode *ipimap = JFS_SBI(ip-\u0026gt;i_sb)-\u0026gt;ipimap; estructura inomap *imap = JFS_IP(ipimap)-\u0026gt;i_imap; JFS_IP() devolver\u00e1 un puntero no v\u00e1lido cuando ipimap == NULL Seguimiento de llamadas: diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1] jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154 evict+0x2ed/ 0x750 fs/inode.c:578 iput_final fs/inode.c:1654 [en l\u00ednea] iput.part.0+0x3fe/0x820 fs/inode.c:1680 iput+0x58/0x70 fs/inode.c:1670"
}
],
"id": "CVE-2021-47340",
"lastModified": "2026-06-17T04:17:14.253",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-47340",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-05-23T19:05:29.527724Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-05-21T15:15:20.770",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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],
"url": "https://git.kernel.org/stable/c/3bb27e27240289b47d3466f647a55c567adbdc3a"
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],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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