CVE-2026-10683: In the Synopsys DesignWare I2C driver (drivers/i2c/i2c_dw.c) operating in target/slave mode, the rx_full inter

Q: How do I fix CVE-2026-10683?

zephyr: upgrade to 4.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-10683 being exploited?

CVE-2026-10683 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-10683 affect?

CVE-2026-10683 affects zephyr. Severity is low (CVSS 2.4). In the Synopsys DesignWare I2C driver (drivers/i2c/i2c_dw.c) operating in target/slave mode, the rx_full interrupt handler gates the write_requested() callback on dw->state != CMD_SEND, and dw->state is only reset to READY on a STOP interru

Routine

LOW 2.4UPGRADE

CVE-2026-10683 is a low-severity flaw (CVSS 2.4) affecting zephyr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Synopsys DesignWare I2C driver (drivers/i2c/i2c_dw.c) operating in target/slave mode, the rx_full interrupt handler gates the write_requested() callback on dw->state != CMD_SEND, and dw->state is only reset to READY on a STOP interrupt. The START_DET interrupt, whose handler in i2c_dw_slave_read_clear_intr_bits() would reset the state on every (re)START, was never added to the enabled interrupt mask in i2c_dw_slave_register(), so that reco

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.4 (Low)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-835
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): Zephyr Project · Vendor: zephyrproject

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-27 19:17 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

zephyrproject zephyr UPGRADE

Affected: >= 4.0.0 and < 4.5.0

Fixed in: 4.5.0

Safe to downgrade to: a release before 4.0.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-10683?

zephyr: upgrade to 4.5.0. Exact commands for each OS are on this page.

Is CVE-2026-10683 being exploited?

CVE-2026-10683 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-10683 affect?

CVE-2026-10683 affects zephyr. Severity is low (CVSS 2.4). In the Synopsys DesignWare I2C driver (drivers/i2c/i2c_dw.c) operating in target/slave mode, the rx_full interrupt handler gates the write_requested() callback on dw->state != CMD_SEND, and dw->state is only reset to READY on a STOP interru

How urgent is CVE-2026-10683?

Priority 17/100. Public exploit reference

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References

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