FKIE_CVE-2026-98387

Vulnerability from fkie_nvd - Published: 2026-10-14 14:17 - Updated: 2026-10-19 10:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: s390/crypto: Fix skcipher_walk return code handling in aes_s390 The return codes from skcipher_walk_virt() were not properly checked before entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt(). If skcipher_walk_virt() fails, the walk structure may be in an undefined state, and attempting to process data could lead to incorrect behavior or accessing uninitialized memory. Add proper return code checking to ensure correct handling of the walk initialization and walk advance and eventually return to the caller with that return code.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/15fa028589c3a2545f0bff355eff06d5844196bf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35c3f97569306050e818fa18e17fa97c358f0f28
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/89b58645646d1dac34162cc2597f42266bfbf930
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/aea3e1588f08e381a7a57b2bf1a60cc2347904cd
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/crypto/aes_s390.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "89b58645646d1dac34162cc2597f42266bfbf930",
              "status": "affected",
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "versionType": "git"
            },
            {
              "lessThan": "35c3f97569306050e818fa18e17fa97c358f0f28",
              "status": "affected",
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "versionType": "git"
            },
            {
              "lessThan": "aea3e1588f08e381a7a57b2bf1a60cc2347904cd",
              "status": "affected",
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "versionType": "git"
            },
            {
              "lessThan": "15fa028589c3a2545f0bff355eff06d5844196bf",
              "status": "affected",
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/s390/crypto/aes_s390.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "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\ns390/crypto: Fix skcipher_walk return code handling in aes_s390\n\nThe return codes from skcipher_walk_virt() were not properly checked\nbefore entering the processing loops in ecb_aes_crypt() and ctr_aes_crypt().\nIf skcipher_walk_virt() fails, the walk structure may be in an undefined\nstate, and attempting to process data could lead to incorrect behavior\nor accessing uninitialized memory.\n\nAdd proper return code checking to ensure correct handling of the walk\ninitialization and walk advance and eventually return to the caller\nwith that return code."
    }
  ],
  "id": "CVE-2026-98387",
  "lastModified": "2026-10-19T10:18:42.043",
  "metrics": {},
  "published": "2026-10-14T14:17:49.510",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/15fa028589c3a2545f0bff355eff06d5844196bf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/35c3f97569306050e818fa18e17fa97c358f0f28"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/89b58645646d1dac34162cc2597f42266bfbf930"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/aea3e1588f08e381a7a57b2bf1a60cc2347904cd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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