High severity · published Sep 11, 2026
CVE-2026-89497
orangefs: skip leading spaces before parsing client debug masks
7.8
CVSS
0.1%
EPSS
No
On KEV
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().
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux · Linux
f7be4ee07fb72a516563bc2870ef41fa589a964a before 173bfd69696815bcf1c052f61cb69c26cca4e443; f7be4ee07fb72a516563bc2870ef41fa589a964a before 995f4d05589f87452a56672270af28918c8939c3; f7be4ee07fb72a516563bc2870ef41fa589a964a before 0ef38d53bca5ea1375fea0d3d11e9727df064b85; f7be4ee07fb72a516563bc2870ef41fa589a964a before ce748ae1181d0daf5dd0d2d906d5c1cc328c153b; f7be4ee07fb72a516563bc2870ef41fa589a964a before 15d79c806231e62a7b746d3b42626810004e1b27; f7be4ee07fb72a516563bc2870ef41fa589a964a before 116d14f29a0524853c9316f32a2ac06cff5d4bf6; +3 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89497
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89497
git.kernel.org
https://git.kernel.org/stable/c/0ef38d53bca5ea1375fea0d3d11e9727df064b85
git.kernel.org
https://git.kernel.org/stable/c/116d14f29a0524853c9316f32a2ac06cff5d4bf6
git.kernel.org
https://git.kernel.org/stable/c/15d79c806231e62a7b746d3b42626810004e1b27
git.kernel.org
https://git.kernel.org/stable/c/173bfd69696815bcf1c052f61cb69c26cca4e443
git.kernel.org
https://git.kernel.org/stable/c/1774c5b3713add32fe15ab0d3db4b73355f94e35
git.kernel.org
https://git.kernel.org/stable/c/995f4d05589f87452a56672270af28918c8939c3
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