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PatchSiren cyber security CVE debrief

CVE-2026-74380 Linux CVE debrief

A Linux kernel vulnerability was resolved, addressing an issue in the gpu: host1x component where the iommu_map_sgtable() return value was not properly checked. This fix updates pin_job() to correctly handle errors from iommu_map_sgtable(). The vulnerability affects Linux kernel versions and requires verification of kernel versions and patch application to prevent potential issues. The fix ensures proper error handling in gpu: host1x, preventing potential security risks. Linux administrators and developers should review and update pin_job() to prevent potential issues.

Vendor
Linux
Product
Unknown
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-15
Original CVE updated
2026-10-16
Advisory published
2026-08-15
Advisory updated
2026-10-16

Who should care

Linux administrators and developers, security teams, and anyone responsible for maintaining Linux systems should verify Linux kernel versions to assess exposure and apply patches to ensure proper error handling in gpu: host1x. They should also review and update pin_job() to prevent potential issues. The vulnerability requires verification of kernel versions and patch application to prevent potential issues.

Why it matters

CVE-2026-74380 is a Linux kernel vulnerability in gpu: host1x that requires verification of kernel versions and patch application to prevent potential issues.

  • Verify Linux kernel versions to assess exposure
  • Apply patches to ensure proper error handling in gpu: host1x
  • Review and update pin_job() to prevent potential issues

Technical summary

The Linux kernel vulnerability (CVE-2026-74380) was resolved by updating pin_job() to correctly check for errors from iommu_map_sgtable(). The vulnerability affects Linux kernel versions and requires verification of kernel versions and patch application to prevent potential issues. The fix ensures proper error handling in gpu: host1x, preventing potential security risks. Linux administrators and developers should review and update pin_job() to prevent potential issues. The vulnerability requires verification of kernel versions and patch application to prevent potential issues.

Defensive priority

Verify Linux kernel versions and apply patches to ensure proper error handling in gpu: host1x.

Recommended defensive actions

  • Verify Linux kernel versions and apply patches
  • Review and update pin_job() to correctly handle errors
  • Assess exposure and prioritize remediation for affected systems
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record and source item provide details on the vulnerability and its resolution. Supplemental sources offer additional context on the affected Linux kernel versions. The vulnerability requires verification of kernel versions and patch application to prevent potential issues. Defenders should verify Linux kernel versions to assess exposure and apply patches to ensure proper error handling in gpu: host1x. The fix updates pin_job() to correctly handle errors from iommu_map_sgtable(), preventing potential security risks.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-74380 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-74380

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-74380 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-74380

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • gpu: host1x: Fix iommu_map_sgtable() return value check

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/74xxx/CVE-2026-74380.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/5f3985c2a500df3126cb12a2e0ccf26a40bc495d

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/3ac173e46ef6fda9c9df8d47cdff4df962df9728

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/2a68928c445138961e2c451983b473aeb3f5b999

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/79240eee5a40014d9edfabe19f06b35ffa84e5f8

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/e024c7993d839503d6c1f0044b8fc537c30300e9

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/18f74762013a4b6aa6f905c4459e0f506f9c5c7b

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.