orangefs: skip leading spaces before parsing client debug masks
In the Linux kernel, the following vulnerability has been resolved: orangefs: skip leading spaces before parsing client debug masks orangefs_prepare_cdm_array() sizes each client debug keyword buffer with strcspn(cds_head, " "), but then parses the keyword with %s. The %s conversion skips leading whitespace, while strcspn() does not. If a client debug entry starts with a space, the allocation can be sized for an empty keyword while sscanf() copies the following non-empty token. This can write past the end of the allocated keyword buffer. Skip leading spaces before computing the keyword length so the allocation matches the string parsed by sscanf().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.270, 5.15.221, 6.1.188, 6.12.109, 6.18.50, 6.6.157, 7.2.4
- CVEs
- CVE-2026-89497
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 02:27 UTC · Revision 1
Source evidence
orangefs: skip leading spaces before parsing client debug masks
core-osv · Original sourcePublished 11 Sept 2026, 19:43 UTC
In the Linux kernel, the following vulnerability has been resolved: orangefs: skip leading spaces before parsing client debug masks orangefs_prepare_cdm_array() sizes each client debug keyword buffer with strcspn(cds_head, " "), but then parses the keyword with %s. The %s conversion skips leading whitespace, while strcspn() does not. If a client debug entry starts with a space, the allocation can be sized for an empty keyword while sscanf() copies the following non-empty token. This can write past the end of the allocated keyword buffer. Skip leading spaces before computing the keyword length so the allocation matches the string parsed by sscanf().
osv:CVE-2026-89497
Kernel
Fixed versions: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.109, 6.18.50, 7.2.4
Complete source record
{
"id": "2d3c5ac7f494e4b2ff55b9e4b64c010715ee010dbd22085b1a7583bb14c9a7e9",
"url": "https://osv.dev/vulnerability/CVE-2026-89497",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "orangefs: skip leading spaces before parsing client debug masks",
"summary": "In the Linux kernel, the following vulnerability has been resolved: orangefs: skip leading spaces before parsing client debug masks orangefs_prepare_cdm_array() sizes each client debug keyword buffer with strcspn(cds_head, \" \"), but then parses the keyword with %s. The %s conversion skips leading whitespace, while strcspn() does not. If a client debug entry starts with a space, the allocation can be sized for an empty keyword while sscanf() copies the following non-empty token. This can write past the end of the allocated keyword buffer. Skip leading spaces before computing the keyword length so the allocation matches the string parsed by sscanf().",
"evidence": "osv:CVE-2026-89497",
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"package": {
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"modified": "2026-10-28T02:30:52.745004629Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6",
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"https://git.kernel.org/stable/c/173bfd69696815bcf1c052f61cb69c26cca4e443",
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"https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3",
"https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b",
"https://git.kernel.org/stable/c/d410cd5303ec59c7cf23dd61423752ce8e9ecb59",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89497.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-89497",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89497.json"
}
},
"related_cves": [
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"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521777,
"published_at": "2026-09-11T19:43:47.439+00:00"
}