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CVE-2026-74734VulnerabilityPublished Updated

ar_context_release · firewire: ohci: fix NULL pointer dereference

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-74734· Medium

Not known to be exploited · fixed in ed5470771c7ed7f959230c4697f316af83426a90 : update Microsoft when convenient.

Data as of 7 Nov 2026, 12:20 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD

Patch
Available – fixed in ed5470771c7ed7f959230c4697f316af83426a90, ca2fa74f3200ced6e0a940753ad99844c42ad7c8, 3770a4794a14331c8ca6a674e49c021827521c2c +2

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 5716e58aecdd4f7225c2e46ce903a839fc54f22f, < ed5470771c7ed7f959230c4697f316af83426a90
Fixed in
  • ed5470771c7ed7f959230c4697f316af83426a90
LinuxLinuxAffected
  • ≥ 5716e58aecdd4f7225c2e46ce903a839fc54f22f, < ca2fa74f3200ced6e0a940753ad99844c42ad7c8
Fixed in
  • ca2fa74f3200ced6e0a940753ad99844c42ad7c8
LinuxLinuxAffected
  • ≥ 5716e58aecdd4f7225c2e46ce903a839fc54f22f, < 3770a4794a14331c8ca6a674e49c021827521c2c
Fixed in
  • 3770a4794a14331c8ca6a674e49c021827521c2c
LinuxLinuxAffected
  • ≥ 5716e58aecdd4f7225c2e46ce903a839fc54f22f, < 42d217add8d80d6e7d9f58f80d11ea9b07ea113e
Fixed in
  • 42d217add8d80d6e7d9f58f80d11ea9b07ea113e
LinuxLinuxAffected
  • ≥ 5716e58aecdd4f7225c2e46ce903a839fc54f22f, < 7d228ba43279de2d191f25e139fad166409c2c06
Fixed in
  • 7d228ba43279de2d191f25e139fad166409c2c06
LinuxLinuxAffected
  • =6.5
Fixed in–

Description

A NULL pointer dereference vulnerability exists in the FireWire OHCI driver component (ar_context_release) in Microsoft software version 3.0. This flaw can cause a denial of service or system crash due to improper handling of NULL pointers.

References

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