GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-89650 (GCVE-0-2026-89650)

Vulnerability from cvelistv5 – Published: 2026-09-11 19:45 – Updated: 2026-09-14 12:01
VLAI
Title
ceph: bound num_export_targets array for mds info v2/v3
Summary
In the Linux kernel, the following vulnerability has been resolved: ceph: bound num_export_targets array for mds info v2/v3 ceph_mdsmap_decode() in fs/ceph/mdsmap.c reads num_export_targets from each per-mds info record and advances the decode cursor by num_export_targets * sizeof(u32) without first checking that many bytes remain. The only upper-bound check that catches a runaway cursor (*p > info_end) is gated on info_v >= 4, because info_end is left NULL for info_v 2 and 3. When the monitor sends an MDS map whose per-mds info version is 2 or 3 with an oversized num_export_targets, the cursor moves past the message front buffer and the later export-targets loop calls the unchecked ceph_decode_32() on out-of-bounds memory. A kernel client processes CEPH_MSG_MDS_MAP from its monitor session (net/ceph/mon_client.c dispatches it; fs/ceph/super.c routes it to ceph_mdsc_handle_mdsmap(), which sets end to the front buffer bound and calls ceph_mdsmap_decode()). A malicious or compromised monitor, or an on-path attacker on an unsigned/unencrypted messenger session, can therefore drive an out-of-bounds read in the client kernel; on x86_64 with KASAN it is reported as a slab-out-of-bounds read in ceph_mdsmap_decode(). The decoded values land in the internal info->export_targets[] array, so the consequence is a kernel out-of-bounds read, not an information leak to the attacker. Impact: a malicious or compromised Ceph monitor sending an MDS map with a per-mds info version of 2 or 3 and an oversized num_export_targets field triggers an out-of-bounds read in the CephFS client kernel. Add a ceph_decode_need() for the export-targets array before advancing the cursor, so the bound is enforced for every info_v >= 2, not only info_v >= 4. This mirrors the count-then-need idiom already used for m_data_pg_pools later in the same function. Compute the export-targets byte count with size_mul() and reuse that checked length when advancing the cursor, so the attacker-controlled num_export_targets multiplication fails closed on overflow rather than relying on the later kcalloc() guard.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d463a43d69f4af85887671d76182437775fd1631 , < 0c4bcc3ba7291d383b82ce1c2fe324f69a42da2d (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < 55a06b32438c222765138727d0a8164b103e8f0d (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < eb3e1a1cb1634c76d59c5a9cb1a026fc69d40911 (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < 3bf7dba8dba9a05774b846affec61a3624ddba38 (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < 58c2d3e954c13694ef6e820a5e9456461bb9e7df (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < 332c444f4dc6fa1e8b8637c9e82d29e97f768656 (git)
Affected: d463a43d69f4af85887671d76182437775fd1631 , < a3eb169ee297aa99670ba927c659990bd1e453f3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ceph/mdsmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0c4bcc3ba7291d383b82ce1c2fe324f69a42da2d",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "55a06b32438c222765138727d0a8164b103e8f0d",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "eb3e1a1cb1634c76d59c5a9cb1a026fc69d40911",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "3bf7dba8dba9a05774b846affec61a3624ddba38",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "58c2d3e954c13694ef6e820a5e9456461bb9e7df",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "332c444f4dc6fa1e8b8637c9e82d29e97f768656",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            },
            {
              "lessThan": "a3eb169ee297aa99670ba927c659990bd1e453f3",
              "status": "affected",
              "version": "d463a43d69f4af85887671d76182437775fd1631",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ceph/mdsmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.109",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.50",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.4",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: bound num_export_targets array for mds info v2/v3\n\nceph_mdsmap_decode() in fs/ceph/mdsmap.c reads num_export_targets from\neach per-mds info record and advances the decode cursor by\nnum_export_targets * sizeof(u32) without first checking that many bytes\nremain. The only upper-bound check that catches a runaway cursor\n(*p \u003e info_end) is gated on info_v \u003e= 4, because info_end is left NULL\nfor info_v 2 and 3. When the monitor sends an MDS map whose per-mds\ninfo version is 2 or 3 with an oversized num_export_targets, the cursor\nmoves past the message front buffer and the later export-targets loop\ncalls the unchecked ceph_decode_32() on out-of-bounds memory.\n\nA kernel client processes CEPH_MSG_MDS_MAP from its monitor session\n(net/ceph/mon_client.c dispatches it; fs/ceph/super.c routes it to\nceph_mdsc_handle_mdsmap(), which sets end to the front buffer bound and\ncalls ceph_mdsmap_decode()). A malicious or compromised monitor, or an\non-path attacker on an unsigned/unencrypted messenger session, can\ntherefore drive an out-of-bounds read in the client kernel; on x86_64\nwith KASAN it is reported as a slab-out-of-bounds read in\nceph_mdsmap_decode(). The decoded values land in the internal\ninfo-\u003eexport_targets[] array, so the consequence is a kernel\nout-of-bounds read, not an information leak to the attacker.\n\nImpact: a malicious or compromised Ceph monitor sending an MDS map with\na per-mds info version of 2 or 3 and an oversized num_export_targets\nfield triggers an out-of-bounds read in the CephFS client kernel.\n\nAdd a ceph_decode_need() for the export-targets array before advancing\nthe cursor, so the bound is enforced for every info_v \u003e= 2, not only\ninfo_v \u003e= 4. This mirrors the count-then-need idiom already used for\nm_data_pg_pools later in the same function.\n\nCompute the export-targets byte count with size_mul() and reuse that\nchecked length when advancing the cursor, so the attacker-controlled\nnum_export_targets multiplication fails closed on overflow rather than\nrelying on the later kcalloc() guard."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - CEPH_MSG_MDS_MAP arrives over the kernel Ceph messenger TCP session from a monitor (mon_dispatch/extra_mon_dispatch) or MDS (mds_dispatch) and is decoded in ceph_mdsmap_decode(); a malicious cluster peer or on-path attacker on an unsigned msgr session reaches the bug with network data alone.\nAC:L - The attacker fully controls per-mds info_v and num_export_targets; setting info_v to 2 or 3 (so info_end stays NULL) and an oversized count deterministically advances the cursor past msg-\u003efront and hits unchecked ceph_decode_32(), with no race or victim memory layout required.\nPR:N - The attacker acts as the remote Ceph monitor or MDS peer (or MITM on msgr1/crc or auth_none); no local account, capability, or privilege on the victim CephFS client host is required.\nUI:N - Once CephFS is mounted, the kernel client subscribes to MDS maps and ceph_mdsc_handle_mdsmap() runs automatically on each update; no further mount, open, or interactive victim action is required at exploit time.\nS:U - The out-of-bounds read, any leaked heap bytes, and a possible oops stay inside the victim host kernel CephFS client and do not cross a VM, container, IOMMU, or other security authority.\nC:H - An attacker-chosen num_export_targets drives an unbounded loop of unchecked ceph_decode_32() reads past the message front slab into adjacent kernel heap (KASAN slab-out-of-bounds); per kernel guidance an unbounded out-of-bounds read is Confidentiality High.\nI:N - OOB words are copied only into a correctly sized kcalloc\u0027d export_targets array; overshooting the front buffer then fails later ceph_decode_32_safe() so the map is destroyed and never installed, giving no out-of-bounds write or control-flow primitive.\nA:H - Walking an attacker-chosen number of u32s past the kmalloc\u0027d msg-\u003efront object into unmapped or guarded pages oopses the ceph-msgr worker, and a failed decode also shuts down the mount via ceph_umount_begin(); both are repeatable on each crafted map."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T12:01:46.012Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0c4bcc3ba7291d383b82ce1c2fe324f69a42da2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/55a06b32438c222765138727d0a8164b103e8f0d"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb3e1a1cb1634c76d59c5a9cb1a026fc69d40911"
        },
        {
          "url": "https://git.kernel.org/stable/c/3bf7dba8dba9a05774b846affec61a3624ddba38"
        },
        {
          "url": "https://git.kernel.org/stable/c/58c2d3e954c13694ef6e820a5e9456461bb9e7df"
        },
        {
          "url": "https://git.kernel.org/stable/c/332c444f4dc6fa1e8b8637c9e82d29e97f768656"
        },
        {
          "url": "https://git.kernel.org/stable/c/a3eb169ee297aa99670ba927c659990bd1e453f3"
        }
      ],
      "title": "ceph: bound num_export_targets array for mds info v2/v3",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89650",
    "datePublished": "2026-09-11T19:45:40.867Z",
    "dateReserved": "2026-09-11T19:38:34.742Z",
    "dateUpdated": "2026-09-14T12:01:46.012Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-89650",
      "date": "2026-09-15",
      "epss": "0.00509",
      "percentile": "0.41984"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-14T15:02:51.000Z",
      "cve": "CVE-2026-89650",
      "id": "msrc_CVE-2026-89650",
      "initial_release_date": "2026-09-13T01:01:33.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ceph: bound num_export_targets array for mds info v2/v3",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-89650.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-89650\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-11T20:19:51.023\",\"lastModified\":\"2026-09-14T13:19:17.400\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nceph: bound num_export_targets array for mds info v2/v3\\n\\nceph_mdsmap_decode() in fs/ceph/mdsmap.c reads num_export_targets from\\neach per-mds info record and advances the decode cursor by\\nnum_export_targets * sizeof(u32) without first checking that many bytes\\nremain. The only upper-bound check that catches a runaway cursor\\n(*p \u003e info_end) is gated on info_v \u003e= 4, because info_end is left NULL\\nfor info_v 2 and 3. When the monitor sends an MDS map whose per-mds\\ninfo version is 2 or 3 with an oversized num_export_targets, the cursor\\nmoves past the message front buffer and the later export-targets loop\\ncalls the unchecked ceph_decode_32() on out-of-bounds memory.\\n\\nA kernel client processes CEPH_MSG_MDS_MAP from its monitor session\\n(net/ceph/mon_client.c dispatches it; fs/ceph/super.c routes it to\\nceph_mdsc_handle_mdsmap(), which sets end to the front buffer bound and\\ncalls ceph_mdsmap_decode()). A malicious or compromised monitor, or an\\non-path attacker on an unsigned/unencrypted messenger session, can\\ntherefore drive an out-of-bounds read in the client kernel; on x86_64\\nwith KASAN it is reported as a slab-out-of-bounds read in\\nceph_mdsmap_decode(). The decoded values land in the internal\\ninfo-\u003eexport_targets[] array, so the consequence is a kernel\\nout-of-bounds read, not an information leak to the attacker.\\n\\nImpact: a malicious or compromised Ceph monitor sending an MDS map with\\na per-mds info version of 2 or 3 and an oversized num_export_targets\\nfield triggers an out-of-bounds read in the CephFS client kernel.\\n\\nAdd a ceph_decode_need() for the export-targets array before advancing\\nthe cursor, so the bound is enforced for every info_v \u003e= 2, not only\\ninfo_v \u003e= 4. This mirrors the count-then-need idiom already used for\\nm_data_pg_pools later in the same function.\\n\\nCompute the export-targets byte count with size_mul() and reuse that\\nchecked length when advancing the cursor, so the attacker-controlled\\nnum_export_targets multiplication fails closed on overflow rather than\\nrelying on the later kcalloc() guard.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ceph/mdsmap.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"0c4bcc3ba7291d383b82ce1c2fe324f69a42da2d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"55a06b32438c222765138727d0a8164b103e8f0d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"eb3e1a1cb1634c76d59c5a9cb1a026fc69d40911\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"3bf7dba8dba9a05774b846affec61a3624ddba38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"58c2d3e954c13694ef6e820a5e9456461bb9e7df\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"332c444f4dc6fa1e8b8637c9e82d29e97f768656\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d463a43d69f4af85887671d76182437775fd1631\",\"lessThan\":\"a3eb169ee297aa99670ba927c659990bd1e453f3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ceph/mdsmap.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.7\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.7\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.109\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.4\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":9.1,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0c4bcc3ba7291d383b82ce1c2fe324f69a42da2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/332c444f4dc6fa1e8b8637c9e82d29e97f768656\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3bf7dba8dba9a05774b846affec61a3624ddba38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/55a06b32438c222765138727d0a8164b103e8f0d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/58c2d3e954c13694ef6e820a5e9456461bb9e7df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a3eb169ee297aa99670ba927c659990bd1e453f3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb3e1a1cb1634c76d59c5a9cb1a026fc69d40911\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-13T07:00:03+00:00",
      "cve": "CVE-2026-89650",
      "id": "CVE-2026-89650",
      "initial_release_date": "2026-09-11T19:45:40.867000+00:00",
      "product_status:known_affected": "2",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel (Ceph): Out-of-bounds read in client via crafted MDS map",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89650.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.