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CVE-2026-89497

HIGHCVSS 7.8/10EPSS 0.13%

Last modified

CVE-2026-89497 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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().. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

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().

Metrics

CVSS 3.1
7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.13%

2.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 173bfd69696815bcf1c052f61cb69c26cca4e443; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 995f4d05589f87452a56672270af28918c8939c3; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 0ef38d53bca5ea1375fea0d3d11e9727df064b85; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < ce748ae1181d0daf5dd0d2d906d5c1cc328c153b; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 15d79c806231e62a7b746d3b42626810004e1b27; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 116d14f29a0524853c9316f32a2ac06cff5d4bf6; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < 1774c5b3713add32fe15ab0d3db4b73355f94e35; >= f7be4ee07fb72a516563bc2870ef41fa589a964a, < d410cd5303ec59c7cf23dd61423752ce8e9ecb59
LinuxLinux4.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89497?
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().
How severe is CVE-2026-89497?
CVE-2026-89497 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
How do I fix CVE-2026-89497?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST