CVE-2025-37937

System crash via unchecked zero divisor

Published May 20, 2025 · Updated May 11, 2026

Divide-by-zero in the Linux kernel dib8000 media driver allows local users to crash the system during digital-TV tuner setup. The dib8000_set_dds function uses a zero value returned by dib8000_read32 as a divisor when calculating the DDS value instead of rejecting it. Triggering requires local low-privilege access and an affected DiB8000-series DVB frontend; the consequence is limited to system availability.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Divide-by-zero in the Linux kernel dib8000 media driver allows local users to crash the system during digital-TV tuner setup. The dib8000_set_dds function uses a zero value returned by dib8000_read32 as a divisor when calculating the DDS value instead of rejecting it. Triggering requires local low-privilege access and an affected DiB8000-series DVB frontend; the consequence is limited to system availability.

The record

CVE
CVE-2025-37937
Published
May 20, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <536f7f3595ef8187cfa9ea50d7d24fcf4e84e166
  2. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <6cfe46036b163e5a0f07c6b705b518148e1a8b2f
  3. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <75b42dfe87657ede3da3f279bd6b1b16d69af954
  4. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <976a85782246a29ba0f6d411a7a4f524cb9ea987
  5. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <9b76b198cf209797abcb1314c18ddeb90fe0827b
  6. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <b9249da6b0ed56269d4f21850df8e5b35dab50bd
  7. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <c8430e72b99936c206b37a8e2daebb3f8df7f2d8
  8. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <cd80277f652138d2619f149f86ae6d17bce721d1
  9. Affected versionversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <e63d465f59011dede0a0f1d21718b59a64c3ff5c
  10. Affected versionversion=3.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=173a64cb3fcff1993b2aa8113e53fd379f6a968f <536f7f3595ef8187cfa9ea50d7d24fcf4e84e166; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <6cfe46036b163e5a0f07c6b705b518148e1a8b2f; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <75b42dfe87657ede3da3f279bd6b1b16d69af954; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <976a85782246a29ba0f6d411a7a4f524cb9ea987; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <9b76b198cf209797abcb1314c18ddeb90fe0827b; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <b9249da6b0ed56269d4f21850df8e5b35dab50bd; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <c8430e72b99936c206b37a8e2daebb3f8df7f2d8; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <cd80277f652138d2619f149f86ae6d17bce721d1; version=173a64cb3fcff1993b2aa8113e53fd379f6a968f <e63d465f59011dede0a0f1d21718b59a64c3ff5c; version=3.10

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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