{
  "cveId": "CVE-2026-90079",
  "url": "https://patchblox.com/security/cve/CVE-2026-90079",
  "summary": "CVE-2026-90079 is fixed in linux on 1 platform by DEBIAN-CVE-2026-90079 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  octeontx2-af: fix cn20k mailbox lifetime on repeated rvu_mbox_init()  rvu_mbox_init() is called separately for AF-PF mailboxes during probe and for AF-VF mailboxes when SR-IOV is enabled.  Each call used to allocate a new ng_rvu object, leaking the first allocation when the pointer was overwritten on the second call.  Sharing one ng_rvu across both paths exposed several teardown bugs: the error path freed all cn20k mailbox DMA and kfree()d ng_rvu even when only the failing init type should be unwound, leaving live AF-PF mailbox memory in use after an AF-VF init failure.  mutex_init() was also re-run on the AF-VF path while AF-PF mailbox handlers could still hold rvu-\u003Embox_lock.  Probe and SR-IOV failure paths did not release cn20k mailbox DMA either, since cleanup only happened in rvu_remove().  Allocate ng_rvu once with devm_kzalloc(), initialize mbox_lock in the same block, unwind only the mailbox memory for the failing init type, and free cn20k mailbox DMA from the probe and pci_enable_sriov() error paths.",
  "published": "2026-09-17T17:16:57Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.10803,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90079",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-90079",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90079",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "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"
  }
}