CVE-2026-98814 (GCVE-0-2026-98814)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:49 – Updated: 2026-10-19 09:26
VLAI
Title
nvme: fix command effects log lifetime for multipath heads
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme: fix command effects log lifetime for multipath heads KASAN reported a use-after-free when an I/O passthrough command was sent through a multipath namespace head after the controller path that first created the head had been removed: BUG: KASAN: slab-use-after-free in nvme_command_effects+0x192/0x200 [nvme_core] Read of size 4 at addr ffff888141b14400 by task nvme/19811 nvme_command_effects+0x192/0x200 [nvme_core] nvme_cmd_allowed+0x7e/0x1b0 [nvme_core] nvme_user_cmd.constprop.0+0x1b5/0x450 [nvme_core] nvme_ns_head_chr_ioctl+0xf4/0x2a0 [nvme_core] Move the log cache to the subsystem, with one entry per command set. Both controllers and namespace heads hold subsystem references, keeping their log pointers valid until subsystem release.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7064 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: be93e87e780253780df9bb6ecc9bc1199b0d94c3 , < 351d1c47e45b2b35780d0548b1012d7242ba298d (git)
Affected: be93e87e780253780df9bb6ecc9bc1199b0d94c3 , < 72ece656abd4de8645a421fb482d7a11e6533a45 (git)
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Linux Linux Affected: 5.9
Unaffected: 0 , < 5.9 (semver)
Unaffected: 7.2.10 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/core.c",
            "drivers/nvme/host/nvme.h"
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          "vendor": "Linux",
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                  "vulnerable": true
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix command effects log lifetime for multipath heads\n\nKASAN reported a use-after-free when an I/O passthrough command was sent\nthrough a multipath namespace head after the controller path that first\ncreated the head had been removed:\n\n  BUG: KASAN: slab-use-after-free in nvme_command_effects+0x192/0x200 [nvme_core]\n  Read of size 4 at addr ffff888141b14400 by task nvme/19811\n  nvme_command_effects+0x192/0x200 [nvme_core]\n  nvme_cmd_allowed+0x7e/0x1b0 [nvme_core]\n  nvme_user_cmd.constprop.0+0x1b5/0x450 [nvme_core]\n  nvme_ns_head_chr_ioctl+0xf4/0x2a0 [nvme_core]\n\nMove the log cache to the subsystem, with one entry per command set. Both\ncontrollers and namespace heads hold subsystem references, keeping their\nlog pointers valid until subsystem release."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:26:07.427Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/351d1c47e45b2b35780d0548b1012d7242ba298d"
        },
        {
          "url": "https://git.kernel.org/stable/c/72ece656abd4de8645a421fb482d7a11e6533a45"
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      ],
      "title": "nvme: fix command effects log lifetime for multipath heads",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98814",
    "datePublished": "2026-10-18T15:49:01.538Z",
    "dateReserved": "2026-09-25T10:25:14.371Z",
    "dateUpdated": "2026-10-19T09:26:07.427Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-27",
      "epss": "0.00162",
      "percentile": "0.05373"
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    "microsoft_vex": {
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      "cve": "CVE-2026-98814",
      "id": "msrc_CVE-2026-98814",
      "initial_release_date": "2026-10-20T01:02:01.000Z",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "nvme: fix command effects log lifetime for multipath heads",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98814.json",
      "version": "3"
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    "nvd": {
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                "programFiles": [
                  "drivers/nvme/host/core.c",
                  "drivers/nvme/host/nvme.h"
                ],
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                ],
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            ],
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix command effects log lifetime for multipath heads\n\nKASAN reported a use-after-free when an I/O passthrough command was sent\nthrough a multipath namespace head after the controller path that first\ncreated the head had been removed:\n\n  BUG: KASAN: slab-use-after-free in nvme_command_effects+0x192/0x200 [nvme_core]\n  Read of size 4 at addr ffff888141b14400 by task nvme/19811\n  nvme_command_effects+0x192/0x200 [nvme_core]\n  nvme_cmd_allowed+0x7e/0x1b0 [nvme_core]\n  nvme_user_cmd.constprop.0+0x1b5/0x450 [nvme_core]\n  nvme_ns_head_chr_ioctl+0xf4/0x2a0 [nvme_core]\n\nMove the log cache to the subsystem, with one entry per command set. Both\ncontrollers and namespace heads hold subsystem references, keeping their\nlog pointers valid until subsystem release."
          }
        ],
        "id": "CVE-2026-98814",
        "lastModified": "2026-10-19T10:19:45.467",
        "metrics": {},
        "published": "2026-10-18T16:17:35.540",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "vulnStatus": "Received"
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    "redhat_vex": {
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      "current_release_date": "2026-10-23T19:34:14+00:00",
      "cve": "CVE-2026-98814",
      "id": "CVE-2026-98814",
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      "product_status:known_affected": "236",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: nvme: fix command effects log lifetime for multipath heads",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98814.json",
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      "product_status:known_affected": "231",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98814",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98814.json",
      "version": "2"
    }
  }
}



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