CVE-2026-89497

high

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().

References

https://git.kernel.org/stable/c/d410cd5303ec59c7cf23dd61423752ce8e9ecb59

https://git.kernel.org/stable/c/ce748ae1181d0daf5dd0d2d906d5c1cc328c153b

https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3

https://git.kernel.org/stable/c/1774c5b3713add32fe15ab0d3db4b73355f94e35

https://git.kernel.org/stable/c/173bfd69696815bcf1c052f61cb69c26cca4e443

https://git.kernel.org/stable/c/15d79c806231e62a7b746d3b42626810004e1b27

https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6

https://git.kernel.org/stable/c/0ef38d53bca5ea1375fea0d3d11e9727df064b85

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-76403

Details

Source: Mitre, NVD

Published: 2026-09-11

Updated: 2026-09-14

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

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

Severity: High

EPSS

EPSS: 0.00168