CVE-2026-52948: i2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl

mediumCVSS 5.5CVE-2026-52948

CSIRTS triage

vendor: null product: i2cOther

What: An integer overflow can occur in the I2C_TIMEOUT ioctl.
Who is affected: Deployments using the i2c subsystem may be affected.
Urgency: Remediation is medium urgency due to the medium severity rating.
Action: Apply relevant patches or updates.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 5.5
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52948

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-529480.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-52948	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund

Recent advisories for i2c

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

mediumCVE-2026-53339: i2c: qcom-cci: Fix NULL pointer dereference in cci_remove()msrc · 2026-07-02
unknownCVE-2026-53340: In the Linux kernel, the following vulnerability has been resolved: i2c: imx: fix clock and pi…nvd · 2026-07-01
unknownCVE-2026-53339: In the Linux kernel, the following vulnerability has been resolved: i2c: qcom-cci: Fix NULL po…nvd · 2026-07-01
unknownCVE-2026-53279: In the Linux kernel, the following vulnerability has been resolved: drm/gma500/oaktrail_lvds: …nvd · 2026-06-26
highCVE-2026-53195: USB: serial: io_ti: fix heap overflow in build_i2c_fw_hdr()msrc · 2026-06-09