Unknown

CVE-2025-68773 — spi: fsl-cpm: Check length parity before switching to 16 bit mode

In the Linux kernel, the following vulnerability has been resolved: spi: fsl-cpm: Check length parity before switching to 16 bit mode Commit fc96ec826bce ("spi: fsl-cpm: Use 16 bit mode for large transfers with even size") failed to make sure that the size is really even before switching to 16 bit mode. Until recently the problem went unnoticed because kernfs uses a pre-allocated bounce buffer of size PAGE_SIZE for reading EEPROM. But commit 8ad6249c51d0 ("eeprom: at25: convert to spi-mem API") introduced an additional dynamically allocated bounce buffer whose size is exactly the size of the transfer, leading to a buffer overrun in the fsl-cpm driver when that size is odd. Add the missing length parity verification and remain in 8 bit mode when the length is not even.

Published Jan 13, 2026 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+2

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.21%

ahead of 11% of scored CVEs · Oct 14, 2026

Affects

Linux

CVSS base

—

Score not published yet.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	version b9d9e8856f1c83e4277403f9b4c369b322ebcb12version 6.4≥ 6.3.3 and < 6.4≥ 6.2.16 and < 6.3≥ 5.4.244 and < 5.5≥ 4.19.284 and < 4.20≥ 4.14.316 and < 4.15≥ 6.1.29 and < 6.1.160 and 13 more ≥ 5.15.114 and < 5.15.198≥ 5.10.181 and < 5.10.248version 36a6d0f66c874666caf4e8be155b1be30f6231be≥ 60afe299bb541a928ba39bcb4ae8d3e428d1c5a5 and < c8f1d35076b78df61ace737e41cc1f4b7b63236cversion b558275c1b040f0e5aa56c862241f9212b6118c3version dc120f2d35b030390a2bc0f94dd5f37e900cae91version 42c04316d9275ec267d36e5e9064cd56c9884148≥ fc96ec826bced75cc6b9c07a4ac44bbf651337ab and < 1417927df8049a0194933861e9b098669a95c762≥ fc96ec826bced75cc6b9c07a4ac44bbf651337ab and < be0b613198e6bfa104ad520397cab82ad3ec1771≥ fc96ec826bced75cc6b9c07a4ac44bbf651337ab and < 743cebcbd1b2609ec5057ab474979cef73d1b681≥ fc96ec826bced75cc6b9c07a4ac44bbf651337ab and < 3dd6d01384823e1bd8602873153d6fc4337ac4fe≥ 7f6738e003b364783f3019fdf6e7645bc8dd1643 and < 837a23a11e0f734f096c7c7b0778d0e625e3dc87≥ 4badd33929c05ed314794b95f1af1308f7222be8 and < 9c34a4a2ead00979d203a8c16bea87f0ef5291d8	Vulnerable	CVE Program (cve.org) e CISA ADP

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.21%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Record published
Oct 13, 2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
CVE published
Jan 13, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 14, 2026 – Oct 14, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

11 on the record

git.kernel.org/stable/c/1417927df8049a0194933861e9b098669a95c762
NIST National Vulnerability Database
git.kernel.org/stable/c/837a23a11e0f734f096c7c7b0778d0e625e3dc87
NIST National Vulnerability Database
git.kernel.org/stable/c/9c34a4a2ead00979d203a8c16bea87f0ef5291d8
NIST National Vulnerability Database
cert-portal.siemens.com/productcert/html/ssa-457936.html
NIST National Vulnerability Database
github.com/advisories/GHSA-wrfv-x882-24r3
GitHub Security Advisories
git.kernel.org/stable/c/c8f1d35076b78df61ace737e41cc1f4b7b63236c
NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2025-68773
GitHub Security Advisories
cert-portal.siemens.com/productcert/html/ssa-019113.html
NIST National Vulnerability Database
git.kernel.org/stable/c/be0b613198e6bfa104ad520397cab82ad3ec1771
NIST National Vulnerability Database
git.kernel.org/stable/c/3dd6d01384823e1bd8602873153d6fc4337ac4fe
NIST National Vulnerability Database
git.kernel.org/stable/c/743cebcbd1b2609ec5057ab474979cef73d1b681
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 13h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 13h
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CVSS score published by NVD, the CNA, CISA or GitHub so far.
No fixed version, patch or mitigation documented.
No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-68773 is "spi: fsl-cpm: Check length parity before switching to 16 bit mode", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. EPSS 0.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

Comments

Moderated technical discussion. Read the community guidelines.

No comments yet.