CVE-2026-68176 (GCVE-0-2026-68176)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-19 16:30
VLAI
Title
tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev
Summary
In the Linux kernel, the following vulnerability has been resolved: tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev If the mmio_pipe_open() fails to find a PCI device, the hiter->dev will be assigned to NULL. The mmiotrace read() function dereferences the hiter->dev if hiter exists. Change the test of the read to not only check hiter being NULL, but also the hiter->dev before dereferencing it.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < c06470320f8156306986a831010cdc9f9f87cb50 (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 0d5aaf91a3d05f7f993401af27872a5fc0f26edc (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 3635a9e8b453e658a49b39d025f35bbc6e58d0e2 (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < faaf95135184208ee3ac6f33175c8d1800669dfc (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 201a01102c529772168181190cb084471082cf5c (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 8464427e1c177809a9488a97dfa2807d9dcf323b (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 724cd84b0546c07806840fa658714488553d13a2 (git)
Affected: f984b51e0779a6dd30feedc41404013ca54e5d05 , < 144f29e85702234b23d2a62abf723e6a17eb5427 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 5.10.265 , ≤ 5.10.* (semver)
Unaffected: 5.15.216 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.148 , ≤ 6.6.* (semver)
Unaffected: 6.12.101 , ≤ 6.12.* (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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      "cve": "CVE-2026-68176",
      "id": "CVE-2026-68176",
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      "product_status:known_affected": "275",
      "product_status:known_not_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tracing: Fix mmiotrace possible NULL dereferencing of hiter-\u003edev",
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      "cve": "CVE-2026-68176",
      "id": "CVE-2026-68176",
      "initial_release_date": "2026-08-13T16:23:36Z",
      "product_status:known_affected": "374",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68176",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68176.json",
      "version": "4"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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