FKIE_CVE-2026-53335

Vulnerability from fkie_nvd - Published: 2026-07-01 14:16 - Updated: 2026-07-01 14:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/damon/lru_sort: handle ctx allocation failure DAMON_LRU_SORT allocates the damon_ctx object for its kdamond in its init function. damon_lru_sort_enabled_store() wrongly assumes the allocation will always succeed once tried. If the damon_ctx allocation was failed, therefore, code execution reaches to damon_commit_ctx() while 'ctx' is NULL. As a result, it dereferences the NULL 'ctx' pointer. Avoid the NULL dereference by returning -ENOMEM if 'ctx' is NULL.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d48f15659395bf1381114f01be91bc68e0be46a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ab04340b5ae5d52c1d46b750538febcde9d889e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/daab1996431a71f43219dcac48ecc9ad2aad3f1c
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/lru_sort.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6d48f15659395bf1381114f01be91bc68e0be46a",
              "status": "affected",
              "version": "c4a8e662c839ac0003e4781aa324cb2d68ed9cb1",
              "versionType": "git"
            },
            {
              "lessThan": "daab1996431a71f43219dcac48ecc9ad2aad3f1c",
              "status": "affected",
              "version": "c4a8e662c839ac0003e4781aa324cb2d68ed9cb1",
              "versionType": "git"
            },
            {
              "lessThan": "ab04340b5ae5d52c1d46b750538febcde9d889e7",
              "status": "affected",
              "version": "c4a8e662c839ac0003e4781aa324cb2d68ed9cb1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/lru_sort.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nmm/damon/lru_sort: handle ctx allocation failure\n\nDAMON_LRU_SORT allocates the damon_ctx object for its kdamond in its init\nfunction.  damon_lru_sort_enabled_store() wrongly assumes the allocation\nwill always succeed once tried.  If the damon_ctx allocation was failed,\ntherefore, code execution reaches to damon_commit_ctx() while \u0027ctx\u0027 is\nNULL.  As a result, it dereferences the NULL \u0027ctx\u0027 pointer.  Avoid the\nNULL dereference by returning -ENOMEM if \u0027ctx\u0027 is NULL."
    }
  ],
  "id": "CVE-2026-53335",
  "lastModified": "2026-07-01T14:16:41.460",
  "metrics": {},
  "published": "2026-07-01T14:16:41.460",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d48f15659395bf1381114f01be91bc68e0be46a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ab04340b5ae5d52c1d46b750538febcde9d889e7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/daab1996431a71f43219dcac48ecc9ad2aad3f1c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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