FKIE_CVE-2026-98698

Vulnerability from fkie_nvd - Published: 2026-10-18 16:17 - Updated: 2026-10-30 13:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: handle empty FILS association request payload fils_encrypt_assoc_req() accepts a (Re)Association Request frame whose last element is the FILS Session element. crypt_len is then zero and aes_siv_encrypt() is called with an empty plaintext. kmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the unconditional sg_init_one() puts an invalid page into the scatterlist. With CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf(); without the debug check the bogus page is handed to the crypto backend. AES-SIV is defined for empty plaintext and the S2V result is then the complete output, so handle this case before the CTR step, which has nothing to encrypt.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce70c87252a14020cb40032efe208efc6e61b1ee
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8c5dbbf584a1baaa008988ac64dd4495f7086bd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de3297c8e521c0b0ddc89ece6fee84e25da9ecf0
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/fils_aead.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "de3297c8e521c0b0ddc89ece6fee84e25da9ecf0",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "ce70c87252a14020cb40032efe208efc6e61b1ee",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "d8c5dbbf584a1baaa008988ac64dd4495f7086bd",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "0b1e4a7eeb6a301ee33bd318982927cbdbae9f36",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "2f5b62f6534d336a62fdb9e88b186dd70b4323ef",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "452f1c9b76f7a122bbc4630b9691bda4809677c4",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "20f939b0c151d1d28e6b62a76b2454fa6fe877f2",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            },
            {
              "lessThan": "5bfd4b0b40b79781d900cb2f7da0685070f53c67",
              "status": "affected",
              "version": "39404feee691a2dc524a629ed6eb5cfe5d8898d1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/fils_aead.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.10"
            },
            {
              "lessThan": "4.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: handle empty FILS association request payload\n\nfils_encrypt_assoc_req() accepts a (Re)Association Request frame whose\nlast element is the FILS Session element.  crypt_len is then zero and\naes_siv_encrypt() is called with an empty plaintext.\n\nkmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the\nunconditional sg_init_one() puts an invalid page into the scatterlist.\nWith CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf();\nwithout the debug check the bogus page is handed to the crypto backend.\n\nAES-SIV is defined for empty plaintext and the S2V result is then the\ncomplete output, so handle this case before the CTR step, which has\nnothing to encrypt."
    }
  ],
  "id": "CVE-2026-98698",
  "lastModified": "2026-10-30T13:21:19.020",
  "metrics": {},
  "published": "2026-10-18T16:17:23.280",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce70c87252a14020cb40032efe208efc6e61b1ee"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d8c5dbbf584a1baaa008988ac64dd4495f7086bd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/de3297c8e521c0b0ddc89ece6fee84e25da9ecf0"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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