{
  "cveId": "CVE-2026-64537",
  "url": "https://patchblox.com/security/cve/CVE-2026-64537",
  "summary": "CVE-2026-64537 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-64537, released August 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  bridge: cfm: reject invalid CCM interval at conf...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  bridge: cfm: reject invalid CCM interval at configuration time  ccm_tx_work_expired() re-arms itself via queue_delayed_work() using the configured exp_interval converted by interval_to_us(). When exp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range, interval_to_us() returns 0, causing the worker to fire immediately in a tight loop that allocates skbs until OOM.  Fix this by validating exp_interval at configuration time:   - Constrain IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL to the valid range    [BR_CFM_CCM_INTERVAL_3_3_MS, BR_CFM_CCM_INTERVAL_10_MIN] in the    netlink policy so userspace cannot set an invalid value.   - Reject starting CCM TX in br_cfm_cc_ccm_tx() when exp_interval has    not yet been configured (defaults to 0 from kzalloc).",
  "published": "2026-07-27T21:17:05Z",
  "severity": "",
  "epss": 0.00173,
  "epssPercentile": 0.06702,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
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      "released": "2026-09-22T15:26:20Z"
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      "fix": "SUSE-SU-2026:4254-1",
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      "released": "2026-10-07T22:31:36Z"
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      "released": "2026-09-22T14:23:31Z"
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}