CVE-2026-89497
orangefs: skip leading spaces before parsing client debug masks
Description
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().
INFO
Published Date :
Sept. 11, 2026, 8:19 p.m.
Last Modified :
Sept. 14, 2026, 1:19 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to a version with the fix.
- Ensure proper buffer sizing in orangefs_prepare_cdm_array().
- Validate string parsing after skipping leading whitespace.
References to Advisories, Solutions, and Tools
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CVE-2026-89497.
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associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
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weaknesses.
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CVE-2026-89497 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-89497 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 14, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89497.json">CVE-2026-89497</a> Added Reference https://git.kernel.org/stable/c/0ef38d53bca5ea1375fea0d3d11e9727df064b85 Added Reference https://git.kernel.org/stable/c/173bfd69696815bcf1c052f61cb69c26cca4e443 Added Reference https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3 Added Reference https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 11, 2026
Action Type Old Value New Value Added Description 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(). Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/89xxx/CVE-2026-89497.json">CVE-2026-89497</a> Added Reference https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6 Added Reference https://git.kernel.org/stable/c/15d79c806231e62a7b746d3b42626810004e1b27 Added Reference https://git.kernel.org/stable/c/1774c5b3713add32fe15ab0d3db4b73355f94e35 Added Reference https://git.kernel.org/stable/c/d410cd5303ec59c7cf23dd61423752ce8e9ecb59