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CVE-2025-22088 (GCVE-0-2025-22088)

Vulnerability from cvelistv5 – Published: 2025-04-16 14:12 – Updated: 2026-08-05 11:56
VLAI
Title
RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Prevent use-after-free in erdma_accept_newconn() After the erdma_cep_put(new_cep) being called, new_cep will be freed, and the following dereference will cause a UAF problem. Fix this issue.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-21 14:57 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < bc1db4d8f1b0dc480d7d745a60a8cc94ce2badd4 (git)
Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < 667a628ab67d359166799fad89b3c6909599558a (git)
Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < a114d25d584c14019d31dbf2163780c47415a187 (git)
Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < 78411a133312ce7d8a3239c76a8fd85bca1cc10f (git)
Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < 7aa6bb5276d9fec98deb05615a086eeb893854ad (git)
Affected: 920d93eac8b97778fef48f34f10e58ddf870fc2a , < 83437689249e6a17b25e27712fbee292e42e7855 (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.134 , ≤ 6.1.* (semver)
Unaffected: 6.6.87 , ≤ 6.6.* (semver)
Unaffected: 6.12.23 , ≤ 6.12.* (semver)
Unaffected: 6.13.11 , ≤ 6.13.* (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          {
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            "tags": [
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            "url": "https://git.kernel.org/stable/c/7aa6bb5276d9fec98deb05615a086eeb893854ad"
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a114d25d584c14019d31dbf2163780c47415a187"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bc1db4d8f1b0dc480d7d745a60a8cc94ce2badd4"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-30T09:07:30+00:00",
      "cve": "CVE-2025-22088",
      "id": "CVE-2025-22088",
      "initial_release_date": "2025-04-16T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22088.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T01:25:00Z",
      "cve": "CVE-2025-22088",
      "id": "CVE-2025-22088",
      "initial_release_date": "2025-04-23T02:38:55Z",
      "product_status:known_affected": "437",
      "product_status:known_not_affected": "392",
      "product_status:recommended": "407",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-22088",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-22088.json",
      "version": "41"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T19:42:07.589Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.8,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-22088",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-04-21T14:57:39.656411Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-04-21T14:57:40.981Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                  "status": "affected",
                  "version": "920d93eac8b97778fef48f34f10e58ddf870fc2a",
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                },
                {
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                {
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                  "status": "affected",
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                {
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                  "status": "affected",
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                  "versionType": "git"
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              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/infiniband/hw/erdma/erdma_cm.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.0"
                },
                {
                  "lessThan": "6.0",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.134",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.87",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.23",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.13.*",
                  "status": "unaffected",
                  "version": "6.13.11",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.14.*",
                  "status": "unaffected",
                  "version": "6.14.2",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.15",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.134",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.87",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.23",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13.11",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
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                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.14.2",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
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                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.15",
                      "versionStartIncluding": "6.0",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
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              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Prevent use-after-free in erdma_accept_newconn()\n\nAfter the erdma_cep_put(new_cep) being called, new_cep will be freed,\nand the following dereference will cause a UAF problem. Fix this issue."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:N - The vulnerable function is the erdma iWARP CM passive-accept handler, driven entirely by remote TCP connections to the RDMA CM listening socket created by `erdma_create_listen()`; the child socket\u0027s TCP_ESTABLISHED transition invokes the inherited `erdma_cm_llp_state_change()` callback and queues the ACCEPT work. iWARP/MPA CM traffic is ordinary routable IPv4 TCP, so any host that can reach the erdma interface can drive this path.\nAC:L - The attacker fully controls the connection flood that reaches the code and the abort timing that makes `kernel_accept()` fail (upstream\u0027s own comment on the identical siw path attributes it to \"Connection already aborted by peer\"), and the same unbounded flood \u2014 each pending connection pinning a CEP, four work structs, and a socket until the MPA timeout \u2014 drives the GFP_KERNEL failures in `erdma_cm_alloc_work()`/`sock_create_lite()`. No condition beyond the attacker\u0027s influence is required.\nPR:N - `erdma_accept_newconn()` executes at the raw TCP accept stage, before MPA request/reply negotiation and before any CM upcall to userspace, so no authentication or authorization has occurred. An unauthenticated remote peer only needs to open TCP connections to the listening port.\nUI:N - The path is triggered purely by inbound TCP connections processed by the kernel workqueue; no action by any local user or administrator is needed beyond the RDMA service already listening.\nS:U - The corruption is confined to kernel heap memory managed by the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The use-after-free on `struct erdma_cep` lets an attacker who grooms the freed slab slot (trivially, via more connections) corrupt a reallocated kernel object, which per standard UAF assessment can be leveraged into arbitrary kernel memory disclosure.\nI:H - The dangling store writes 8 zero bytes at a fixed offset into a freed kmalloc object, giving a controllable-target write that can zero a pointer, length, or refcount in a sprayed victim object or clobber the SLUB freelist pointer \u2014 a primitive escalatable to arbitrary write and control-flow hijack.\nA:H - Even unexploited, the write into freed slab memory corrupts the allocator and adjacent objects, reliably producing a kernel oops or panic, and it can be triggered repeatedly by an unauthenticated remote attacker."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:56:42.090Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/bc1db4d8f1b0dc480d7d745a60a8cc94ce2badd4"
            },
            {
              "url": "https://git.kernel.org/stable/c/667a628ab67d359166799fad89b3c6909599558a"
            },
            {
              "url": "https://git.kernel.org/stable/c/a114d25d584c14019d31dbf2163780c47415a187"
            },
            {
              "url": "https://git.kernel.org/stable/c/78411a133312ce7d8a3239c76a8fd85bca1cc10f"
            },
            {
              "url": "https://git.kernel.org/stable/c/7aa6bb5276d9fec98deb05615a086eeb893854ad"
            },
            {
              "url": "https://git.kernel.org/stable/c/83437689249e6a17b25e27712fbee292e42e7855"
            }
          ],
          "title": "RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-22088",
        "datePublished": "2025-04-16T14:12:41.065Z",
        "dateReserved": "2024-12-29T08:45:45.817Z",
        "dateUpdated": "2026-08-05T11:56:42.090Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
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    }
  }
}



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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

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.