CVE-2026-31603

MEDIUMNVD 5.55.5—

5.5

In the Linux kernel, the following vulnerability has been resolved:

staging: sm750fb: fix division by zero in ps_to_hz()

ps_to_hz() is called from hw_sm750_crtc_set_mode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero.

Fix by rejecting zero pixclock in lynxfb_ops_check_var(), consistent with other framebuffer drivers.

CVSS v3: 5.5
EG Score: 5.5(high)
EPSS: 3.5%
KEV: Not listed

Published

April 24, 2026

Last Modified

April 29, 2026

References (6)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1412ba36597a82e928f20047f41d6c6582dafe8a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f640c6043aeab31a2f607d7605271860c3b11df
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6144895a4335a2491c282931f1f2fa610b86339f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/75a1621e4f91310673c9acbcbb25c2a7ff821cd3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/779412e0e391fd4a0d12e1d1adaa7bf043de62d7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/daf6733bd7c4c5015b431739ac29b0e29021096b

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-369Divide By Zero

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2026-316032026-04-26
staging: sm750fb: fix division by zero in ps_to_hz()

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-31603?

CVE-2026-31603 is a medium vulnerability published on April 24, 2026. In the Linux kernel, the following vulnerability has been resolved: staging: sm750fb: fix division by zero in pstohz() pstohz() is called from hwsm750crtcsetmode() without validating that pixclock is non-zero. A zero pixclock passed via FBIOPUT_VSCREENINFO causes a division by zero. Fix by…

When was CVE-2026-31603 disclosed?

CVE-2026-31603 was first published in the National Vulnerability Database on April 24, 2026, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-31603 actively exploited?

CVE-2026-31603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-31603?

CVE-2026-31603 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-31603?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31603, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-31603

Published

Last Modified

References (6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-31603?

Same vendor

Same CWE

CVE-2026-31603

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-31603?

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References (6)

Frequently asked(5)

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