Unknown

CVE-2026-64504 — iio: accel: bmc150: clamp the device-reported FIFO frame count

In the Linux kernel, the following vulnerability has been resolved: iio: accel: bmc150: clamp the device-reported FIFO frame count __bmc150_accel_fifo_flush() copies the number of samples the device reports in its hardware FIFO into an on-stack buffer u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3]; which is sized for at most BMC150_ACCEL_FIFO_LENGTH (32) samples. The frame count is read from the FIFO_STATUS register and only masked to its 7 valid bits: count = val & 0x7F; so it can be 0..127. The only other limit applied to it is the optional caller-supplied sample budget: if (samples && count > samples) count = samples; which does not constrain count on the flush-all path (samples == 0), and leaves it well above 32 whenever samples is larger. count samples are then transferred into buffer[]: bmc150_accel_fifo_transfer(data, (u8 *)buffer, count); bmc150_accel_fifo_transfer() reads count * 6 bytes through regmap, so a malfunctioning, malicious or counterfeit accelerometer (or an attacker tampering with the I2C/SPI bus) that reports up to 127 frames writes up to 762 bytes into the 192-byte buffer: a stack out-of-bounds write of up to 570 bytes that clobbers the stack canary, saved registers and the return address. Clamp count to BMC150_ACCEL_FIFO_LENGTH, the number of samples buffer[] is sized for, before the transfer, mirroring the watermark clamp already done in bmc150_accel_set_watermark(). A well-formed flush reports at most BMC150_ACCEL_FIFO_LENGTH frames, so legitimate devices are unaffected.

Published Jul 25, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · 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

No scoring signals.

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

—

No EPSS score.

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	≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < b5a9f521e0a49a0266200fd535b32a9668ecb33b≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < 2fe0531dd73eff1de0f2584cb77716d645e548d5≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < d0e6d924a5484e005cae5aff6a0aa07a22f3c9ff≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < bfffc98f3de92e0f76be7c7b72e63ac1776a6dbc≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < 89f4a4ca0ac3a933c750569a771c079a290b0721≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < 3e766526827acd542bcd36c20c4d5f397e0f6521≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < 35a3cd8fd65e15029eb90f1e510045b1bb071175≥ 3bbec9773389112330954a6a64422eaa78d546c1 and < ce0e1cae26096fe959a0da5563a6d6d5a801d5fb and 1 more version 4.1	Vulnerable	CVE Program (cve.org) e CISA ADP

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 15, 2026
Affected products added · linux/linux
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Source status changed · → Received
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Jul 25, 2026 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

git.kernel.org/stable/c/b5a9f521e0a49a0266200fd535b32a9668ecb33b
NIST National Vulnerability Database
git.kernel.org/stable/c/2fe0531dd73eff1de0f2584cb77716d645e548d5
NIST National Vulnerability Database
git.kernel.org/stable/c/3e766526827acd542bcd36c20c4d5f397e0f6521
NIST National Vulnerability Database
git.kernel.org/stable/c/d0e6d924a5484e005cae5aff6a0aa07a22f3c9ff
NIST National Vulnerability Database
git.kernel.org/stable/c/89f4a4ca0ac3a933c750569a771c079a290b0721
NIST National Vulnerability Database
git.kernel.org/stable/c/35a3cd8fd65e15029eb90f1e510045b1bb071175
NIST National Vulnerability Database
git.kernel.org/stable/c/ce0e1cae26096fe959a0da5563a6d6d5a801d5fb
NIST National Vulnerability Database
git.kernel.org/stable/c/bfffc98f3de92e0f76be7c7b72e63ac1776a6dbc
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 FIRST EPSS score.
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-2026-64504 is "iio: accel: bmc150: clamp the device-reported FIFO frame count", rated Unknown. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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