CVE-2026-90415 (GCVE-0-2026-90415)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09
VLAI
Title
RDMA/cxgb4: free STAG index when TPT entry write fails
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: free STAG index when TPT entry write fails write_tpt_entry() allocates a new STAG index with c4iw_get_resource() and bumps stats.stag.cur before programming the entry. When write_adapter_mem() fails, it returns the error without releasing the index or reversing the statistic. No MR is inserted into rhp->mrs, so deregistration never reclaims it, leaking the index until device teardown. Record whether this call allocated the index and, on a failed write, return it to tpt_table and decrement stats.stag.cur. Key the rollback on both the write error and that flag, not the error alone: a non-reset update carries a caller-owned STAG that this call did not allocate and must not free.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ec3eead217181d7360a11317a888ceb30807867c , < 5fe4731bfbd8d83c4a14b4af3a27329969ce8a99 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < 8f6976d635d190e3d7af7103daaa581cf1ccc12e (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < 9eeafcda1d6c11f0eec532243c4e96ec8c632bd7 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < 5a21e5114cec4cd3f8a2843d4c46bc49634d6e96 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < 2f17ca7ab5269ac2504e1039c3921373dccd7712 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < a2e37d1ab773be3cd26b1c19593ca2dbcece9c57 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < a64e2beb450179a5d43034af8d5476a11eac1486 (git)
Affected: ec3eead217181d7360a11317a888ceb30807867c , < fdfb5cea4bf070cdb31d997efd87bb684df041fd (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.5
Unaffected: 0 , < 3.5 (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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        "vulnStatus": "Received"
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      "aggregate_severity": "low",
      "current_release_date": "2026-09-22T16:28:22Z",
      "cve": "CVE-2026-90415",
      "id": "CVE-2026-90415",
      "initial_release_date": "2026-09-18T00:16:34Z",
      "product_status:known_affected": "335",
      "product_status:known_not_affected": "12",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90415",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90415.json",
      "version": "4"
    }
  }
}



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