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CVE-2026-98274

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

net: psp: avoid conflicts with skb->decrypted and sk_validate_xmit_skb()

PSP conflicts with TLS ULP in its usage of both skb->decrypted and sk->sk_validate_xmit_skb().

Make PSP mutually exclusive with TLS ULP, the only other user of either of these. As other users of skb->decrypted come along, they can be added to sk_has_decrypt_user(). It would make sense to also assert that sk->sk_validate_xmit_skb() is also NULL in both of these setup paths for similar future proofing, but the PSP listener/sk_clone() path is still broken and it could be seen as a regression to not allow rx assoc to run on a child of a listener socket with PSP tx assoc state.

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Include all TCP ULPs in the sk_has_decrypt_user() check, even though TLS is the only one that conflicts with PSP via the decrypted bit. This is intentional because PSP was not designed to be used with ULPs. It is best to close off surface area that may make bugs reachable, until someone wishes to design and test an actual user of PSP with ULPs.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-98274",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6b46ca260e2290e3453d1355ab5b6d283d73d780",
              "lessThan": "a13cca5ba5375f13cbdab545abfb5e288bef3f78",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b46ca260e2290e3453d1355ab5b6d283d73d780",
              "lessThan": "c8c8c18862337c469e325c207601de3279847809",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b46ca260e2290e3453d1355ab5b6d283d73d780",
              "lessThan": "a41f24c612c3f5139a3143307eb85bbcf1bd4d07",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "include/net/sock.h",
            "net/core/sock.c",
            "net/ipv4/tcp_ulp.c",
            "net/psp/psp_sock.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver"
            },
            {
              "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-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "include/net/sock.h",
            "net/core/sock.c",
            "net/ipv4/tcp_ulp.c",
            "net/psp/psp_sock.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:17.077",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/a13cca5ba5375f13cbdab545abfb5e288bef3f78",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a41f24c612c3f5139a3143307eb85bbcf1bd4d07",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c8c8c18862337c469e325c207601de3279847809",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: psp: avoid conflicts with skb->decrypted and sk_validate_xmit_skb()\n\nPSP conflicts with TLS ULP in its usage of both skb->decrypted and\nsk->sk_validate_xmit_skb().\n\nMake PSP mutually exclusive with TLS ULP, the only other user of either\nof these. As other users of skb->decrypted come along, they can be added\nto sk_has_decrypt_user(). It would make sense to also assert that\nsk->sk_validate_xmit_skb() is also NULL in both of these setup paths for\nsimilar future proofing, but the PSP listener/sk_clone() path is still\nbroken and it could be seen as a regression to not allow rx assoc to run\non a child of a listener socket with PSP tx assoc state.\n\nInclude all TCP ULPs in the sk_has_decrypt_user() check, even though TLS\nis the only one that conflicts with PSP via the decrypted bit. This is\nintentional because PSP was not designed to be used with ULPs. It is\nbest to close off surface area that may make bugs reachable, until\nsomeone wishes to design and test an actual user of PSP with ULPs."
    }
  ],
  "lastModified": "2026-10-06T09:18:17.077",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}