FKIE_CVE-2026-100075

Vulnerability from fkie_nvd - Published: 2026-09-25 14:17 - Updated: 2026-09-25 15:17
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters When srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect descriptor, the unwind path destroys RDMA contexts but leaves stale n_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later sq_wr_avail accounting in srpt_queue_response() or srpt_write_pending() can then subtract the wrong number of send queue credits. Reset the counters and clear rw_ctxs after freeing the heap allocation before returning an error.
Impacted products
Vendor Product Version

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/ulp/srpt/ib_srpt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "af00051dbc9f467d4840ec709680660a3f8990fa",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "717ab4d0614e9446bf8e2de6229464499e4008d6",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "f1f2252da52cdda912da9993f39f58783b01b38f",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "be1478849e1abb1e12dc12e14cdbf800cc6fa99a",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "af073bd245180393bcb15d33d3990a6bdc32593a",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "bd02d644bd19a2795c018635d273d91e45d2bb95",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            },
            {
              "lessThan": "b38f98e176050850f41bb6415f3a71400056623e",
              "status": "affected",
              "version": "b99f8e4d7bcd3bfbb3cd965918523299370d0cb2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/ulp/srpt/ib_srpt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters\n\nWhen srpt_alloc_rw_ctxs() fails partway through a multi-buffer indirect\ndescriptor, the unwind path destroys RDMA contexts but leaves stale\nn_rw_ctx and n_rdma values (and a dangling rw_ctxs pointer). Later\nsq_wr_avail accounting in srpt_queue_response() or srpt_write_pending()\ncan then subtract the wrong number of send queue credits.\n\nReset the counters and clear rw_ctxs after freeing the heap\nallocation before returning an error."
    }
  ],
  "id": "CVE-2026-100075",
  "lastModified": "2026-09-25T15:17:52.117",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-25T14:17:14.163",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/717ab4d0614e9446bf8e2de6229464499e4008d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/af00051dbc9f467d4840ec709680660a3f8990fa"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/af073bd245180393bcb15d33d3990a6bdc32593a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b38f98e176050850f41bb6415f3a71400056623e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bd02d644bd19a2795c018635d273d91e45d2bb95"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/be1478849e1abb1e12dc12e14cdbf800cc6fa99a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f1f2252da52cdda912da9993f39f58783b01b38f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f65f45dfa1e6e2eaa9e11c8b8ce8857799cb189d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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