GHSA-V844-6465-JHQH
Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-03-17 21:31In the Linux kernel, the following vulnerability has been resolved:
libceph: reset sparse-read state in osd_fault()
When a fault occurs, the connection is abandoned, reestablished, and any pending operations are retried. The OSD client tracks the progress of a sparse-read reply using a separate state machine, largely independent of the messenger's state.
If a connection is lost mid-payload or the sparse-read state machine returns an error, the sparse-read state is not reset. The OSD client will then interpret the beginning of a new reply as the continuation of the old one. If this makes the sparse-read machinery enter a failure state, it may never recover, producing loops like:
libceph: [0] got 0 extents libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read
Therefore, reset the sparse-read state in osd_fault(), ensuring retries start from a clean state.
{
"affected": [],
"aliases": [
"CVE-2026-23136"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-14T16:15:53Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reset sparse-read state in osd_fault()\n\nWhen a fault occurs, the connection is abandoned, reestablished, and any\npending operations are retried. The OSD client tracks the progress of a\nsparse-read reply using a separate state machine, largely independent of\nthe messenger\u0027s state.\n\nIf a connection is lost mid-payload or the sparse-read state machine\nreturns an error, the sparse-read state is not reset. The OSD client\nwill then interpret the beginning of a new reply as the continuation of\nthe old one. If this makes the sparse-read machinery enter a failure\nstate, it may never recover, producing loops like:\n\n libceph: [0] got 0 extents\n libceph: data len 142248331 != extent len 0\n libceph: osd0 (1)...:6801 socket error on read\n libceph: data len 142248331 != extent len 0\n libceph: osd0 (1)...:6801 socket error on read\n\nTherefore, reset the sparse-read state in osd_fault(), ensuring retries\nstart from a clean state.",
"id": "GHSA-v844-6465-jhqh",
"modified": "2026-03-17T21:31:41Z",
"published": "2026-02-14T18:30:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23136"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/10b7c72810364226f7b27916ea3e2a4f870bc04b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/11194b416ef95012c2cfe5f546d71af07b639e93"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e94075e950a6598e710b9f7dffea5aa388f40313"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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