CVE-2026-98259 (GCVE-0-2026-98259)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-19 09:16
VLAI
Title
fs/dax: check zero or empty entry before converting xarray entry
Summary
In the Linux kernel, the following vulnerability has been resolved: fs/dax: check zero or empty entry before converting xarray entry Calling dax_to_folio() with empty entry causes kernel panic below when booting a VM with DAX enabled storage. This patch checks empty entry before calling dax_to_folio() on dax_associate_entry(), dax_disassociate_entry(), and dax_busy_page(). Commit 98c183a4fccf ("fs/dax: don't disassociate zero page entries") added guards in the associate and disassociate paths, but the guards still come after dax_to_folio(), and dax_busy_page() still has the same problem. [ 0.737679] EXT4-fs (pmem0p1): mounted filesystem 79676804-7c8b-491a-b2a6-9bae3c72af70 ro with ordered data mode. Quota mode: disabled. [ 0.737891] VFS: Mounted root (ext4 filesystem) readonly on device 259:1. [ 0.739119] devtmpfs: mounted [ 0.739476] Freeing unused kernel memory: 1920K [ 0.740156] Run /sbin/init as init process [ 0.740229] with arguments: [ 0.740286] /sbin/init [ 0.740321] with environment: [ 0.740369] HOME=/ [ 0.740400] TERM=linux [ 0.743162] Unable to handle kernel paging request at virtual address fffffdffbf000008 [ 0.743285] Mem abort info: [ 0.743316] ESR = 0x0000000096000006 [ 0.743371] EC = 0x25: DABT (current EL), IL = 32 bits [ 0.743444] SET = 0, FnV = 0 [ 0.743489] EA = 0, S1PTW = 0 [ 0.743545] FSC = 0x06: level 2 translation fault [ 0.743610] Data abort info: [ 0.743656] ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000 [ 0.743720] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 0.743785] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 0.743848] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000b9d17000 [ 0.743931] [fffffdffbf000008] pgd=10000000bfa3d403, p4d=10000000bfa3d403, pud=1000000040bfe403, pmd=0000000000000000 [ 0.744070] Internal error: Oops: 0000000096000006 [#1] SMP [ 0.748888] CPU: 0 UID: 0 PID: 1 Comm: init Not tainted 6.18.4 #1 NONE [ 0.749421] pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0.749969] pc : dax_disassociate_entry.constprop.0+0x20/0x50 [ 0.750444] lr : dax_insert_entry+0xcc/0x408 [ 0.750802] sp : ffff80008000b9e0 [ 0.751083] x29: ffff80008000b9e0 x28: 0000000000000000 x27: 0000000000000000 [ 0.751682] x26: 0000000001963d01 x25: ffff0000004f7d90 x24: 0000000000000000 [ 0.752264] x23: 0000000000000000 x22: ffff80008000bcc8 x21: 0000000000000011 [ 0.752836] x20: ffff80008000ba90 x19: 0000000001963d01 x18: 0000000000000000 [ 0.753407] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 0.753970] x14: ffffbf3154b9ae70 x13: 0000000000000000 x12: ffffbf3154b9ae70 [ 0.754548] x11: ffffffffffffffff x10: 0000000000000000 x9 : 0000000000000000 [ 0.755122] x8 : 000000000000000d x7 : 000000000000001f x6 : 0000000000000000 [ 0.755707] x5 : 0000000000000000 x4 : 0000000000000000 x3 : fffffdffc0000000 [ 0.756287] x2 : 0000000000000008 x1 : 0000000040000000 x0 : fffffdffbf000000 [ 0.756871] Call trace: [ 0.757107] dax_disassociate_entry.constprop.0+0x20/0x50 (P) [ 0.757592] dax_iomap_pte_fault+0x4fc/0x808 [ 0.757951] dax_iomap_fault+0x28/0x30 [ 0.758258] ext4_dax_huge_fault+0x80/0x2dc [ 0.758594] ext4_dax_fault+0x10/0x3c [ 0.758892] __do_fault+0x38/0x12c [ 0.759175] __handle_mm_fault+0x530/0xcf0 [ 0.759518] handle_mm_fault+0xe4/0x230 [ 0.759833] do_page_fault+0x17c/0x4dc [ 0.760144] do_translation_fault+0x30/0x38 [ 0.760483] do_mem_abort+0x40/0x8c [ 0.760771] el0_ia+0x4c/0x170 [ 0.761032] el0t_64_sync_handler+0xd8/0xdc [ 0.761371] el0t_64_sync+0x168/0x16c [ 0.761677] Code: f9453021 f2dfbfe3 cb813080 8b001860 (f9400401) [ 0.762168] ---[ end trace 0000000000000000 ]--- [ 0.762550] note: init[1] exited with irqs disabled [ 0.762631] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6643 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 38607c62b34b46317c46d5baf1df03ac6e48a1c6 , < 44ab7420ab52ab6c04bf225cac7c5c007cedd6c7 (git)
Affected: 38607c62b34b46317c46d5baf1df03ac6e48a1c6 , < 185cd2f5fe1e3319853cf065905b2885ad0bcbf8 (git)
Affected: 38607c62b34b46317c46d5baf1df03ac6e48a1c6 , < 8e2b8614039853e68d5338e37821e8bcee9fc05f (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/dax.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "44ab7420ab52ab6c04bf225cac7c5c007cedd6c7",
              "status": "affected",
              "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
              "versionType": "git"
            },
            {
              "lessThan": "185cd2f5fe1e3319853cf065905b2885ad0bcbf8",
              "status": "affected",
              "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
              "versionType": "git"
            },
            {
              "lessThan": "8e2b8614039853e68d5338e37821e8bcee9fc05f",
              "status": "affected",
              "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/dax.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.54",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/dax: check zero or empty entry before converting xarray entry\n\nCalling dax_to_folio() with empty entry causes kernel panic below when\nbooting a VM with DAX enabled storage.\n\nThis patch checks empty entry before calling dax_to_folio() on\ndax_associate_entry(), dax_disassociate_entry(), and dax_busy_page().\n\nCommit 98c183a4fccf (\"fs/dax: don\u0027t disassociate zero page entries\") added\nguards in the associate and disassociate paths, but the guards still come\nafter dax_to_folio(), and dax_busy_page() still has the same problem.\n\n[    0.737679] EXT4-fs (pmem0p1): mounted filesystem 79676804-7c8b-491a-b2a6-9bae3c72af70 ro with ordered data mode. Quota mode: disabled.\n[    0.737891] VFS: Mounted root (ext4 filesystem) readonly on device 259:1.\n[    0.739119] devtmpfs: mounted\n[    0.739476] Freeing unused kernel memory: 1920K\n[    0.740156] Run /sbin/init as init process\n[    0.740229]   with arguments:\n[    0.740286]     /sbin/init\n[    0.740321]   with environment:\n[    0.740369]     HOME=/\n[    0.740400]     TERM=linux\n[    0.743162] Unable to handle kernel paging request at virtual address fffffdffbf000008\n[    0.743285] Mem abort info:\n[    0.743316]   ESR = 0x0000000096000006\n[    0.743371]   EC = 0x25: DABT (current EL), IL = 32 bits\n[    0.743444]   SET = 0, FnV = 0\n[    0.743489]   EA = 0, S1PTW = 0\n[    0.743545]   FSC = 0x06: level 2 translation fault\n[    0.743610] Data abort info:\n[    0.743656]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000\n[    0.743720]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[    0.743785]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[    0.743848] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000b9d17000\n[    0.743931] [fffffdffbf000008] pgd=10000000bfa3d403, p4d=10000000bfa3d403, pud=1000000040bfe403, pmd=0000000000000000\n[    0.744070] Internal error: Oops: 0000000096000006 [#1]  SMP\n[    0.748888] CPU: 0 UID: 0 PID: 1 Comm: init Not tainted 6.18.4 #1 NONE\n[    0.749421] pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[    0.749969] pc : dax_disassociate_entry.constprop.0+0x20/0x50\n[    0.750444] lr : dax_insert_entry+0xcc/0x408\n[    0.750802] sp : ffff80008000b9e0\n[    0.751083] x29: ffff80008000b9e0 x28: 0000000000000000 x27: 0000000000000000\n[    0.751682] x26: 0000000001963d01 x25: ffff0000004f7d90 x24: 0000000000000000\n[    0.752264] x23: 0000000000000000 x22: ffff80008000bcc8 x21: 0000000000000011\n[    0.752836] x20: ffff80008000ba90 x19: 0000000001963d01 x18: 0000000000000000\n[    0.753407] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n[    0.753970] x14: ffffbf3154b9ae70 x13: 0000000000000000 x12: ffffbf3154b9ae70\n[    0.754548] x11: ffffffffffffffff x10: 0000000000000000 x9 : 0000000000000000\n[    0.755122] x8 : 000000000000000d x7 : 000000000000001f x6 : 0000000000000000\n[    0.755707] x5 : 0000000000000000 x4 : 0000000000000000 x3 : fffffdffc0000000\n[    0.756287] x2 : 0000000000000008 x1 : 0000000040000000 x0 : fffffdffbf000000\n[    0.756871] Call trace:\n[    0.757107]  dax_disassociate_entry.constprop.0+0x20/0x50 (P)\n[    0.757592]  dax_iomap_pte_fault+0x4fc/0x808\n[    0.757951]  dax_iomap_fault+0x28/0x30\n[    0.758258]  ext4_dax_huge_fault+0x80/0x2dc\n[    0.758594]  ext4_dax_fault+0x10/0x3c\n[    0.758892]  __do_fault+0x38/0x12c\n[    0.759175]  __handle_mm_fault+0x530/0xcf0\n[    0.759518]  handle_mm_fault+0xe4/0x230\n[    0.759833]  do_page_fault+0x17c/0x4dc\n[    0.760144]  do_translation_fault+0x30/0x38\n[    0.760483]  do_mem_abort+0x40/0x8c\n[    0.760771]  el0_ia+0x4c/0x170\n[    0.761032]  el0t_64_sync_handler+0xd8/0xdc\n[    0.761371]  el0t_64_sync+0x168/0x16c\n[    0.761677] Code: f9453021 f2dfbfe3 cb813080 8b001860 (f9400401)\n[    0.762168] ---[ end trace 0000000000000000 ]---\n[    0.762550] note: init[1] exited with irqs disabled\n[    0.762631] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:16:30.392Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/44ab7420ab52ab6c04bf225cac7c5c007cedd6c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/185cd2f5fe1e3319853cf065905b2885ad0bcbf8"
        },
        {
          "url": "https://git.kernel.org/stable/c/8e2b8614039853e68d5338e37821e8bcee9fc05f"
        }
      ],
      "title": "fs/dax: check zero or empty entry before converting xarray entry",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98259",
    "datePublished": "2026-10-06T08:45:24.031Z",
    "dateReserved": "2026-09-25T10:25:14.332Z",
    "dateUpdated": "2026-10-19T09:16:30.392Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98259",
      "date": "2026-11-10",
      "epss": "0.00166",
      "percentile": "0.05911"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-21T18:35:03.000Z",
      "cve": "CVE-2026-98259",
      "id": "msrc_CVE-2026-98259",
      "initial_release_date": "2026-10-20T22:23:44.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fs/dax: check zero or empty entry before converting xarray entry",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98259.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "fs/dax.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "44ab7420ab52ab6c04bf225cac7c5c007cedd6c7",
                    "status": "affected",
                    "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "185cd2f5fe1e3319853cf065905b2885ad0bcbf8",
                    "status": "affected",
                    "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "8e2b8614039853e68d5338e37821e8bcee9fc05f",
                    "status": "affected",
                    "version": "38607c62b34b46317c46d5baf1df03ac6e48a1c6",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "fs/dax.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.15"
                  },
                  {
                    "lessThan": "6.15",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.54",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3",
                    "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\nfs/dax: check zero or empty entry before converting xarray entry\n\nCalling dax_to_folio() with empty entry causes kernel panic below when\nbooting a VM with DAX enabled storage.\n\nThis patch checks empty entry before calling dax_to_folio() on\ndax_associate_entry(), dax_disassociate_entry(), and dax_busy_page().\n\nCommit 98c183a4fccf (\"fs/dax: don\u0027t disassociate zero page entries\") added\nguards in the associate and disassociate paths, but the guards still come\nafter dax_to_folio(), and dax_busy_page() still has the same problem.\n\n[    0.737679] EXT4-fs (pmem0p1): mounted filesystem 79676804-7c8b-491a-b2a6-9bae3c72af70 ro with ordered data mode. Quota mode: disabled.\n[    0.737891] VFS: Mounted root (ext4 filesystem) readonly on device 259:1.\n[    0.739119] devtmpfs: mounted\n[    0.739476] Freeing unused kernel memory: 1920K\n[    0.740156] Run /sbin/init as init process\n[    0.740229]   with arguments:\n[    0.740286]     /sbin/init\n[    0.740321]   with environment:\n[    0.740369]     HOME=/\n[    0.740400]     TERM=linux\n[    0.743162] Unable to handle kernel paging request at virtual address fffffdffbf000008\n[    0.743285] Mem abort info:\n[    0.743316]   ESR = 0x0000000096000006\n[    0.743371]   EC = 0x25: DABT (current EL), IL = 32 bits\n[    0.743444]   SET = 0, FnV = 0\n[    0.743489]   EA = 0, S1PTW = 0\n[    0.743545]   FSC = 0x06: level 2 translation fault\n[    0.743610] Data abort info:\n[    0.743656]   ISV = 0, ISS = 0x00000006, ISS2 = 0x00000000\n[    0.743720]   CM = 0, WnR = 0, TnD = 0, TagAccess = 0\n[    0.743785]   GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n[    0.743848] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000b9d17000\n[    0.743931] [fffffdffbf000008] pgd=10000000bfa3d403, p4d=10000000bfa3d403, pud=1000000040bfe403, pmd=0000000000000000\n[    0.744070] Internal error: Oops: 0000000096000006 [#1]  SMP\n[    0.748888] CPU: 0 UID: 0 PID: 1 Comm: init Not tainted 6.18.4 #1 NONE\n[    0.749421] pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[    0.749969] pc : dax_disassociate_entry.constprop.0+0x20/0x50\n[    0.750444] lr : dax_insert_entry+0xcc/0x408\n[    0.750802] sp : ffff80008000b9e0\n[    0.751083] x29: ffff80008000b9e0 x28: 0000000000000000 x27: 0000000000000000\n[    0.751682] x26: 0000000001963d01 x25: ffff0000004f7d90 x24: 0000000000000000\n[    0.752264] x23: 0000000000000000 x22: ffff80008000bcc8 x21: 0000000000000011\n[    0.752836] x20: ffff80008000ba90 x19: 0000000001963d01 x18: 0000000000000000\n[    0.753407] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n[    0.753970] x14: ffffbf3154b9ae70 x13: 0000000000000000 x12: ffffbf3154b9ae70\n[    0.754548] x11: ffffffffffffffff x10: 0000000000000000 x9 : 0000000000000000\n[    0.755122] x8 : 000000000000000d x7 : 000000000000001f x6 : 0000000000000000\n[    0.755707] x5 : 0000000000000000 x4 : 0000000000000000 x3 : fffffdffc0000000\n[    0.756287] x2 : 0000000000000008 x1 : 0000000040000000 x0 : fffffdffbf000000\n[    0.756871] Call trace:\n[    0.757107]  dax_disassociate_entry.constprop.0+0x20/0x50 (P)\n[    0.757592]  dax_iomap_pte_fault+0x4fc/0x808\n[    0.757951]  dax_iomap_fault+0x28/0x30\n[    0.758258]  ext4_dax_huge_fault+0x80/0x2dc\n[    0.758594]  ext4_dax_fault+0x10/0x3c\n[    0.758892]  __do_fault+0x38/0x12c\n[    0.759175]  __handle_mm_fault+0x530/0xcf0\n[    0.759518]  handle_mm_fault+0xe4/0x230\n[    0.759833]  do_page_fault+0x17c/0x4dc\n[    0.760144]  do_translation_fault+0x30/0x38\n[    0.760483]  do_mem_abort+0x40/0x8c\n[    0.760771]  el0_ia+0x4c/0x170\n[    0.761032]  el0t_64_sync_handler+0xd8/0xdc\n[    0.761371]  el0t_64_sync+0x168/0x16c\n[    0.761677] Code: f9453021 f2dfbfe3 cb813080 8b001860 (f9400401)\n[    0.762168] ---[ end trace 0000000000000000 ]---\n[    0.762550] note: init[1] exited with irqs disabled\n[    0.762631] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b"
          }
        ],
        "id": "CVE-2026-98259",
        "lastModified": "2026-10-19T10:18:26.993",
        "metrics": {},
        "published": "2026-10-06T09:18:14.877",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/185cd2f5fe1e3319853cf065905b2885ad0bcbf8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/44ab7420ab52ab6c04bf225cac7c5c007cedd6c7"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8e2b8614039853e68d5338e37821e8bcee9fc05f"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-11-06T20:08:59+00:00",
      "cve": "CVE-2026-98259",
      "id": "CVE-2026-98259",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "202",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fs/dax: check zero or empty entry before converting xarray entry",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98259.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-11-04T18:04:38Z",
      "cve": "CVE-2026-98259",
      "id": "CVE-2026-98259",
      "initial_release_date": "2026-10-07T16:28:19Z",
      "product_status:known_not_affected": "348",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98259",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2026-98259.json",
      "version": "4"
    }
  }
}



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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.