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

Vulnerability from cvelistv5 – Published: 2026-03-18 10:05 – Updated: 2026-05-11 22:03
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
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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)
Create a notification for this product.
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 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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          "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"
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            "version": "3.1"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-03-18T10:05:05.108Z",
    "dateReserved": "2026-01-13T15:37:45.989Z",
    "dateUpdated": "2026-05-11T22:03:04.396Z",
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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\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nRDMA/siw: Soluciona una posible desreferencia de puntero NULL en el procesamiento de encabezados\\n\\nSi siw_get_hdr() devuelve -EINVAL antes de set_rx_fpdu_context(), qp-\u0026gt;rx_fpdu puede ser NULL. La ruta de error en siw_tcp_rx_data() desreferencia qp-\u0026gt;rx_fpdu-\u0026gt;more_ddp_segs sin verificar, lo que puede llevar a una desreferencia de puntero NULL. Solo verificar more_ddp_segs cuando rx_fpdu est\u00e1 presente.\\n\\nKASAN splat:\\n[ 101.384271] KASAN: desreferencia de puntero nulo en el rango [0x00000000000000c0-0x00000000000000c7]\\n[ 101.385869] RIP: 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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

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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.