CVE-2026-98249 (GCVE-0-2026-98249)
Vulnerability from cvelistv5
Published
2026-10-06 08:45
Modified
2026-10-19 09:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc swsusp_arch_suspend_exit() reinstalls the restored kernel's hyp stub vectors with an hvc, but never passes the arguments. x0 is not set to HVC_SET_VECTORS and x1 is not set to the vector address, so the stub dispatch falls through and returns without writing vbar_el2. EL2 is left pointing at the trans_pgd copy of the vectors, a page that swsusp_free() releases right after resume. Set the arguments up the same way __hyp_set_vectors() does. Without this fix, Vladimir was able to trigger a hang when resuming from hibernation with CONFIG_PAGE_POISONING=y and page_poison=on.
References
Impacted products
Vendor Product Version
Linux Linux Version: 788bfdd97434982b6d575062581e8e72eea755af
Version: 788bfdd97434982b6d575062581e8e72eea755af
Version: 788bfdd97434982b6d575062581e8e72eea755af
Version: 788bfdd97434982b6d575062581e8e72eea755af
Version: 788bfdd97434982b6d575062581e8e72eea755af
Version: 788bfdd97434982b6d575062581e8e72eea755af
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/arm64/kernel/hibernate-asm.S"
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc\n\nswsusp_arch_suspend_exit() reinstalls the restored kernel\u0027s hyp stub\nvectors with an hvc, but never passes the arguments. x0 is not set to\nHVC_SET_VECTORS and x1 is not set to the vector address, so the stub\ndispatch falls through and returns without writing vbar_el2. EL2 is\nleft pointing at the trans_pgd copy of the vectors, a page that\nswsusp_free() releases right after resume.\n\nSet the arguments up the same way __hyp_set_vectors() does.\n\nWithout this fix, Vladimir was able to trigger a hang when resuming from\nhibernation with CONFIG_PAGE_POISONING=y and page_poison=on."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:16:20.676Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6646418d1032cac25110526161f60d255ed08397"
        },
        {
          "url": "https://git.kernel.org/stable/c/909e92423db7299e0206232051aa21fe129f65d0"
        },
        {
          "url": "https://git.kernel.org/stable/c/60a3c319f1127c4d247d4ed235c5d65376d5e745"
        },
        {
          "url": "https://git.kernel.org/stable/c/e80ea8118a073a30ebe7a31bd78938c2b1751acc"
        },
        {
          "url": "https://git.kernel.org/stable/c/d3f8f773312af69eaf4dda106d76d6d42e4362e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/955d86e5f3b95b731991fdb84966c50b16314629"
        }
      ],
      "title": "arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98249",
    "datePublished": "2026-10-06T08:45:17.414Z",
    "dateReserved": "2026-09-25T10:25:14.331Z",
    "dateUpdated": "2026-10-19T09:16:20.676Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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