CVE-2026-90416 (GCVE-0-2026-90416)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
VLAI
Title
RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/mlx5: Fix stack out-of-bounds read in cc_params debugfs get_param() reads a congestion parameter as a u32 but formats it with the signed "%d" into an 11-byte stack buffer. A value with bit 31 set, such as 0x80000000, renders as "-2147483648\n" whose full length is 12. snprintf() stores only 11 bytes yet returns 12, so simple_read_from_buffer() treats 12 bytes as valid and reads one byte past lbuf[]. Size the buffer for the widest unsigned decimal, format with "%u" to match the u32, and use scnprintf() so the length passed to simple_read_from_buffer() reflects the bytes actually stored.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < 1c5b4f76cd73372c5a8a4c91c95d5a31f141e091 (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < 06b62758f81e27ca4c81201c22e3436c6d9ac894 (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < d809cf3f0ed9255abfc73c4730bcf187151422af (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < 0b0122fcc923a0271130f5fb71af2cd7e20434d9 (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < ce8dfd32a33b578c3abf178f67b4c8d36854f041 (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < 4599311e78e88c893ad551aca622de2bfdf1c31f (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < c75ee076fa09778a2f9602a972dade4a0b0785f7 (git)
Affected: 4a2da0b8c0782816f3ae6846ae7942fcbb0f8172 , < 03826bc1fa6c90405bf05831f2b501a8368dcd27 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.14
Unaffected: 0 , < 4.14 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "cve": "CVE-2026-90416",
      "id": "CVE-2026-90416",
      "initial_release_date": "2026-09-22T16:28:20Z",
      "product_status:known_affected": "329",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90416",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90416.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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