CVE-2026-52962 (GCVE-0-2026-52962)
Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-06-29 04:18
VLAI
EPSS
VEX
Title
ceph: fix a buffer leak in __ceph_setxattr()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ceph: fix a buffer leak in __ceph_setxattr()
The old_blob in __ceph_setxattr() can store
ci->i_xattrs.prealloc_blob value during the retry.
However, it is never called the ceph_buffer_put()
for the old_blob object. This patch fixes the issue of
the buffer leak.
Severity
7.8 (High)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
86968ef21596515958d5f0a40233d02be78ecec0 , < 521e5aba857fd267624892c8dd6295f22ce0267e
(git)
Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < d0cb994605c84a159c1d00d72cdc8583c321ef95 (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < ecf94823c5c6a20790bb76ed2816822b0beb0c22 (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < 4bfdcefdaa6092a06cacd59389c7756b36e6de8c (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < 7d3e8d2d648d5f0df29b4710246680f47695fe94 (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < 3fa13ceefbc5f36131110342743994cb3de80637 (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < bc7abce4460e490dcb579eec770f175b150b685f (git) Affected: 86968ef21596515958d5f0a40233d02be78ecec0 , < 5d3cc36b4e77a27ce7b686b7c59c7072bcb3fa8e (git) Affected: 1d86cb8d3204337e1853b84d69ea0f30dc0ba973 (git) Affected: 9cec64d3f6d91da590cc4069172254067b43d0b2 (git) Affected: de30fc2ca852365ed635f62d7d818bffc15e55c9 (git) Affected: dfb8712c7acce0689aed6c400a22b35f4d2861fe (git) Affected: f41cd559f1f3412db8e0acdede05ecf990ebfd8a (git) Affected: 4.4.192 , < 4.5 (semver) Affected: 4.9.192 , < 4.10 (semver) Affected: 4.14.143 , < 4.15 (semver) Affected: 4.19.72 , < 4.20 (semver) Affected: 5.2.14 , < 5.3 (semver) |
guessed | |
| Linux | Linux |
Affected:
5.3
Unaffected: 0 , < 5.3 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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"matchCriteriaId": "96D99E49-380D-43AB-BDBA-25C3AD018A9C",
"versionEndExcluding": "6.18.33",
"versionStartIncluding": "6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4",
"versionEndExcluding": "7.0.10",
"versionStartIncluding": "6.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:-:*:*:*:*:*:*",
"matchCriteriaId": "D036D76E-AC69-4382-B4C1-8EDA1ABB2941",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:rc6:*:*:*:*:*:*",
"matchCriteriaId": "65AF2469-2B9F-4D4D-8886-2B8BA66D5FDC",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:rc7:*:*:*:*:*:*",
"matchCriteriaId": "21001886-2C34-45F4-9319-60102B357E64",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:5.3:rc8:*:*:*:*:*:*",
"matchCriteriaId": "999345BA-F820-40B9-A711-32CA9265C289",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
"matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*",
"matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*",
"matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix a buffer leak in __ceph_setxattr()\n\nThe old_blob in __ceph_setxattr() can store\nci-\u003ei_xattrs.prealloc_blob value during the retry.\nHowever, it is never called the ceph_buffer_put()\nfor the old_blob object. This patch fixes the issue of\nthe buffer leak."
}
],
"id": "CVE-2026-52962",
"lastModified": "2026-07-14T16:18:32.180",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2026-06-24T17:17:06.520",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/3fa13ceefbc5f36131110342743994cb3de80637"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/4bfdcefdaa6092a06cacd59389c7756b36e6de8c"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/521e5aba857fd267624892c8dd6295f22ce0267e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/5d3cc36b4e77a27ce7b686b7c59c7072bcb3fa8e"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/7d3e8d2d648d5f0df29b4710246680f47695fe94"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/bc7abce4460e490dcb579eec770f175b150b685f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/d0cb994605c84a159c1d00d72cdc8583c321ef95"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/ecf94823c5c6a20790bb76ed2816822b0beb0c22"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-787"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Low",
"current_release_date": "2026-07-14T16:28:48+00:00",
"cve": "CVE-2026-52962",
"id": "CVE-2026-52962",
"initial_release_date": "2026-06-24T00:00:00+00:00",
"product_status:known_affected": "260",
"product_status:known_not_affected": "14",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ceph: fix a buffer leak in __ceph_setxattr()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52962.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "low",
"current_release_date": "2026-10-01T01:02:55Z",
"cve": "CVE-2026-52962",
"id": "CVE-2026-52962",
"initial_release_date": "2026-06-26T02:14:37Z",
"product_status:known_affected": "641",
"product_status:known_not_affected": "23",
"product_status:recommended": "273",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-52962",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-52962.json",
"version": "12"
}
}
}
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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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