{
  "cveId": "CVE-2026-31445",
  "url": "https://patchblox.com/security/cve/CVE-2026-31445",
  "summary": "CVE-2026-31445 is fixed in 19 products on 1 platform, first by DEBIAN-CVE-2026-31445, released May 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  mm/damon/core: avoid use of half-online-committe...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  mm/damon/core: avoid use of half-online-committed context  One major usage of damon_call() is online DAMON parameters update.  It is done by calling damon_commit_ctx() inside the damon_call() callback function.  damon_commit_ctx() can fail for two reasons: 1) invalid parameters and 2) internal memory allocation failures.  In case of failures, the damon_ctx that attempted to be updated (commit destination) can be partially updated (or, corrupted from a perspective), and therefore shouldn\u0027t be used anymore.  The function only ensures the damon_ctx object can safely deallocated using damon_destroy_ctx().  The API callers are, however, calling damon_commit_ctx() only after asserting the parameters are valid, to avoid damon_commit_ctx() fails due to invalid input parameters.  But it can still theoretically fail if the internal memory allocation fails.  In the case, DAMON may run with the partially updated damon_ctx.  This can result in unexpected behaviors including even NULL pointer dereference in case of damos_commit_dests() failure [1].  Such allocation failure is arguably too small to fail, so the real world impact would be rare.  But, given the bad consequence, this needs to be fixed.  Avoid such partially-committed (maybe-corrupted) damon_ctx use by saving the damon_commit_ctx() failure on the damon_ctx object.  For this, introduce damon_ctx-\u003Emaybe_corrupted field.  damon_commit_ctx() sets it when it is failed.  kdamond_call() checks if the field is set after each damon_call_control-\u003Efn() is executed.  If it is set, ignore remaining callback requests and return.  All kdamond_call() callers including kdamond_fn() also check the maybe_corrupted field right after kdamond_call() invocations.  If the field is set, break the kdamond_fn() main loop so that DAMON sill doesn\u0027t use the context that might be corrupted.  [sj@kernel.org: let kdamond_call() with cancel regardless of maybe_corrupted]",
  "published": "2026-04-22T14:16:38Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00121,
  "epssPercentile": 0.01885,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "bpftool6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "bpftool6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel-livepatch-6.18.25-52.107",
      "release": "amzn 2023",
      "fixedVersion": "1:1.0-0.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-debuginfo-common-aarch64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "product": "kernel6.18-debuginfo-common-x86_64",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-devel",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "kernel6.18-headers",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "product": "kernel6.18-modules-extra",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "product": "kernel6.18-tools-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
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      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.19.11-1",
      "fix": "DEBIAN-CVE-2026-31445",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-31445",
      "released": "2026-05-15T16:01:09Z"
    },
    {
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      "release": "amzn 2023",
      "fixedVersion": "1:6.18.25-52.107.amzn2023",
      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    },
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
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      "fix": "ALAS2023-2026-1746",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-1746",
      "released": "2026-05-25T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}