CVE-2026-98057

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same. Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Undergoing Analysis

Source identifier

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

Published

2026-09-25 11:17:34.660000

Last modified

2026-10-19 10:17:59.870000

View original CVE JSON

{
  "id": "CVE-2026-98057",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-25T11:17:34.660",
  "lastModified": "2026-10-19T10:17:59.870",
  "vulnStatus": "Undergoing Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nring-buffer: Add checking nr_subbufs to persistent ring buffer validation\n\nSashiko reported that the code was using meta->nr_subbufs without making\nsure that it matched the nr_pages + 1 on data that was assuming the two\nwere the same.\n\nAdd a check to the persistent ring buffer validation code to make sure\nthat the saved nr_subbufs matches what we expect."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "kernel/trace/ring_buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "3ec743d558f111d8999aea24577ba66c65ee2eeb",
              "lessThan": "f0467190e6a9fc61e343c8064ef16aad513788c3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32",
              "lessThan": "364a31052aa9ef91db137f82d797366007cd85b7",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32",
              "lessThan": "69d502457e3f76142f7fcf6e2625e80e0ce8a60f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f5b95f1fa2ef3a03f49eeec658ba97e721412b32",
              "lessThan": "6c001a62c34f13fe1c6a24304c289b387d9e697d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "0d547a6f5e8fad26ebc12f501d7d19fccdbad6bf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "6.12.16",
              "lessThan": "6.12.111",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "6.13.4",
              "lessThan": "6.14",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "kernel/trace/ring_buffer.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.14",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.14",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.111",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "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/364a31052aa9ef91db137f82d797366007cd85b7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/69d502457e3f76142f7fcf6e2625e80e0ce8a60f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6c001a62c34f13fe1c6a24304c289b387d9e697d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f0467190e6a9fc61e343c8064ef16aad513788c3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}