CVE-2026-23242 (GCVE-0-2026-23242)

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-03-18 10:05
VLAI?
Title
RDMA/siw: Fix potential NULL pointer dereference in header processing
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix potential NULL pointer dereference in header processing If siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(), qp->rx_fpdu can be NULL. The error path in siw_tcp_rx_data() dereferences qp->rx_fpdu->more_ddp_segs without checking, which may lead to a NULL pointer deref. Only check more_ddp_segs when rx_fpdu is present. KASAN splat: [ 101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] [ 101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < ab61841633d10e56a58c1493a262f0d02dba2f5e (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < 8564dcc12fbb372d984ab45768cae9335777b274 (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < ab957056192d6bd068b3759cb2077d859cca01f0 (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < ffba40b67663567481fa8a1ed5d2da36897c175d (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < 87b7a036d2c73d5bb3ae2d47dee23de465db3355 (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < 714c99e1dc8f85f446e05be02ba83972e981a817 (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < ce025f7f5d070596194315eb2e4e89d568b8a755 (git)
Affected: 8b6a361b8c482f22ac99c3273285ff16b23fba91 , < 14ab3da122bd18920ad57428f6cf4fade8385142 (git)
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    Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.14 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/siw/siw_qp_rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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              "versionType": "git"
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              "versionType": "git"
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/siw/siw_qp_rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.252",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.202",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
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                {
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                },
                {
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                },
                {
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc1",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix potential NULL pointer dereference in header processing\n\nIf siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(),\nqp-\u003erx_fpdu can be NULL. The error path in siw_tcp_rx_data()\ndereferences qp-\u003erx_fpdu-\u003emore_ddp_segs without checking, which\nmay lead to a NULL pointer deref. Only check more_ddp_segs when\nrx_fpdu is present.\n\nKASAN splat:\n[  101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]\n[  101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-18T10:05:05.108Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e"
        },
        {
          "url": "https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274"
        },
        {
          "url": "https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d"
        },
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          "url": "https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355"
        },
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          "url": "https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755"
        },
        {
          "url": "https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142"
        }
      ],
      "title": "RDMA/siw: Fix potential NULL pointer dereference in header processing",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23242",
    "datePublished": "2026-03-18T10:05:05.108Z",
    "dateReserved": "2026-01-13T15:37:45.989Z",
    "dateUpdated": "2026-03-18T10:05:05.108Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23242\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-18T11:16:15.887\",\"lastModified\":\"2026-03-18T14:52:44.227\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/siw: Fix potential NULL pointer dereference in header processing\\n\\nIf siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(),\\nqp-\u003erx_fpdu can be NULL. The error path in siw_tcp_rx_data()\\ndereferences qp-\u003erx_fpdu-\u003emore_ddp_segs without checking, which\\nmay lead to a NULL pointer deref. Only check more_ddp_segs when\\nrx_fpdu is present.\\n\\nKASAN splat:\\n[  101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]\\n[  101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • 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.
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  • 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.



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