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RDMA/cxgb4: free STAG index when TPT entry write fails

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-90415

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-90415

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "5fe4731bfbd8d83c4a14b4af3a27329969ce8a99",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "8f6976d635d190e3d7af7103daaa581cf1ccc12e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "9eeafcda1d6c11f0eec532243c4e96ec8c632bd7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "5a21e5114cec4cd3f8a2843d4c46bc49634d6e96",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "2f17ca7ab5269ac2504e1039c3921373dccd7712",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "a2e37d1ab773be3cd26b1c19593ca2dbcece9c57",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "a64e2beb450179a5d43034af8d5476a11eac1486",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "ec3eead217181d7360a11317a888ceb30807867c",
        "lessThan": "fdfb5cea4bf070cdb31d997efd87bb684df041fd",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/infiniband/hw/cxgb4/mem.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.5"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.5",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/infiniband/hw/cxgb4/mem.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90415

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36735 · Revision 1
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Publisher date
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