CVE-2026-98387

Full vulnerability record from the local CVENow database.

Description

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.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-14 14:17:49.510000

Last modified

2026-10-19 10:18:42.043000

View original CVE JSON

{
  "id": "CVE-2026-98387",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-14T14:17:49.510",
  "lastModified": "2026-10-19T10:18:42.043",
  "vulnStatus": "Received",
  "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."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "arch/s390/crypto/aes_s390.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "lessThan": "89b58645646d1dac34162cc2597f42266bfbf930",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "lessThan": "35c3f97569306050e818fa18e17fa97c358f0f28",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "lessThan": "aea3e1588f08e381a7a57b2bf1a60cc2347904cd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7988fb2c03c8cf9936f851ab19a6d21b3c3411c0",
              "lessThan": "15fa028589c3a2545f0bff355eff06d5844196bf",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "arch/s390/crypto/aes_s390.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.5",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.5",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.111",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.53",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.7",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "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",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}