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GHSA-7J5W-CR4G-JJC9

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

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

genirq/proc: Size interrupt directory names for 10-digit interrupt numbers

/proc/irq// directory names are built in char name[10] buffers with sprintf(name, "%u", irq).

Ten-digit IRQ numbers already need 11 bytes including the trailing NUL, and current sparse-IRQ configurations allow interrupt numbers in that range.

Size the temporary name buffer for the current decimal form and switch to bounded formatting when creating or removing the proc entry.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97503"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngenirq/proc: Size interrupt directory names for 10-digit interrupt numbers\n\n/proc/irq/\u003cn\u003e/ directory names are built in `char name[10]` buffers\nwith `sprintf(name, \"%u\", irq)`.\n\nTen-digit IRQ numbers already need 11 bytes including the trailing NUL, and\ncurrent sparse-IRQ configurations allow interrupt numbers in that range.\n\nSize the temporary name buffer for the current decimal form and switch\nto bounded formatting when creating or removing the proc entry.",
  "id": "GHSA-7j5w-cr4g-jjc9",
  "modified": "2026-09-24T18:31:35Z",
  "published": "2026-09-24T18:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97503"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4b22fbae70037299e96539c330e4a1054b28a91"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97503 (GCVE-0-2026-97503)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:04 – Updated: 2026-09-24 16:04

Title

genirq/proc: Size interrupt directory names for 10-digit interrupt numbers

Summary

In the Linux kernel, the following vulnerability has been resolved: genirq/proc: Size interrupt directory names for 10-digit interrupt numbers /proc/irq/<n>/ directory names are built in `char name[10]` buffers with `sprintf(name, "%u", irq)`. Ten-digit IRQ numbers already need 11 bytes including the trailing NUL, and current sparse-IRQ configurations allow interrupt numbers in that range. Size the temporary name buffer for the current decimal form and switch to bounded formatting when creating or removing the proc entry.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/d4b22fbae70037299…
https://git.kernel.org/stable/c/c2c7983c93f5d8696…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d4b22fbae70037299e96539c330e4a1054b28a91 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c2c7983c93f5d86962318be7e7298f1bc3feb1a6 (git) Affected: 0 , < 6.18.53 (semver)
Linux	Linux	Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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        {
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          "product": "Linux",
          "programFiles": [
            "kernel/irq/proc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "d4b22fbae70037299e96539c330e4a1054b28a91",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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              "lessThan": "c2c7983c93f5d86962318be7e7298f1bc3feb1a6",
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              "status": "affected",
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              "versionType": "semver"
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              "version": "7.2",
              "versionType": "original_commit_for_fix"
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        }
      ],
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:04:50.412Z",
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          "url": "https://git.kernel.org/stable/c/c2c7983c93f5d86962318be7e7298f1bc3feb1a6"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97503",
    "datePublished": "2026-09-24T16:04:50.412Z",
    "dateReserved": "2026-09-24T16:01:01.151Z",
    "dateUpdated": "2026-09-24T16:04:50.412Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

Sightings

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Nomenclature

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Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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GHSA-7J5W-CR4G-JJC9

CVE-2026-97503 (GCVE-0-2026-97503)

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