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rds: ib: use rds_conn_drop() on protocol version mismatch

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: rds: ib: use rds_conn_drop() on protocol version mismatch rds_ib_cm_connect_complete() runs from the RDMA-CM event handler with conn->c_cm_lock held. When the peer negotiates a protocol version older than RDS_PROTOCOL_COMPAT_VERSION, the handler calls rds_conn_destroy(), which is only safe in the rmmod path: it synchronously tears the connection down and flush_work()es the shutdown work cp_down_w. That shutdown work (rds_conn_shutdown()) needs cp_cm_lock, which is the very lock the event handler still holds, so the flush never completes: the two workers wait on each other and the RDS connection workqueues stall for good. All other RDMA-CM failure paths (REJECTED, CONNECT_ERROR, DISCONNECTED) use rds_conn_drop(), which marks the connection RDS_CONN_ERROR and schedules the shutdown work asynchronously. Use it here as well.

Announced Source revision 1
Original source ↗

CVE-2026-98257

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-2026-98257

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": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "424019be3f637da76b74f44a40034669acbb166f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "14fb90067d13f4494cff0f03243fae3cf2911cbc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "344c72a0bc2703a6de4918ed935850e07dae3af2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "b5c9f2951d330d4a198a64d6e60f79b4bd6ef078",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "d392b16acd0908f077289aad8bba066ff16de336",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "65ca0a5037152a5a80b8fe6aac80eb80458be573",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "7d8c22cb2cb1efb5e830a4545c76abf7b35cc2e8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "f147dd9ecabf23fd63d2562ffe64252a0453ecde",
        "lessThan": "f97d8c7bab7843631206a114986c9059da03efeb",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/rds/ib_cm.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.37"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.37",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.112",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.54",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.8",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/rds/ib_cm.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98257

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#38336 · Revision 1
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Publisher date
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