CVE-2026-98561 (GCVE-0-2026-98561)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:21
VLAI
Title
nfp: hold IPsec RX state under the XArray lock
Summary
In the Linux kernel, the following vulnerability has been resolved: nfp: hold IPsec RX state under the XArray lock nfp_net_ipsec_rx() drops the XArray lock before taking a reference to the xfrm_state it found. The delete path can erase the entry and drop the last state reference in that interval. RX can then try to increment a zero refcount after the state has been queued for destruction. The driver queues firmware invalidation asynchronously; the delete path does not wait for the command to complete or drain pending RX processing. The XFRM garbage collector waits for an RCU grace period before freeing the state. That delays reclamation but does not make acquiring a reference from zero valid. Take the xfrm_state reference before releasing the XArray lock so xa_erase() cannot run between lookup and reference acquisition.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 57f273adbcd44172cbe0bd10b8b7408dd255699f , < c1b1639fb138db52fcfbd1747e92f2454076c6d5 (git)
Affected: 57f273adbcd44172cbe0bd10b8b7408dd255699f , < dd765023bb54f9650f8b9137906fb2c4a554dd1d (git)
Affected: 57f273adbcd44172cbe0bd10b8b7408dd255699f , < 8468d05aa08dc430b5675beadf6f6fb8943f170b (git)
Affected: 57f273adbcd44172cbe0bd10b8b7408dd255699f , < fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488 (git)
Affected: 57f273adbcd44172cbe0bd10b8b7408dd255699f , < 1a983a4e14c635c40354be110cd9a1a5c94e01e6 (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.158 , ≤ 6.6.* (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/netronome/nfp/crypto/ipsec.c"
          ],
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          "vendor": "Linux",
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "semver"
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfp: hold IPsec RX state under the XArray lock\n\nnfp_net_ipsec_rx() drops the XArray lock before taking a reference to the\nxfrm_state it found. The delete path can erase the entry and drop the last\nstate reference in that interval. RX can then try to increment a zero\nrefcount after the state has been queued for destruction.\n\nThe driver queues firmware invalidation asynchronously; the delete path\ndoes not wait for the command to complete or drain pending RX processing.\n\nThe XFRM garbage collector waits for an RCU grace period before freeing\nthe state. That delays reclamation but does not make acquiring a reference\nfrom zero valid.\n\nTake the xfrm_state reference before releasing the XArray lock so\nxa_erase() cannot run between lookup and reference acquisition."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:45.378Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/1a983a4e14c635c40354be110cd9a1a5c94e01e6"
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      "title": "nfp: hold IPsec RX state under the XArray lock",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98561",
    "datePublished": "2026-10-18T15:18:28.011Z",
    "dateReserved": "2026-09-25T10:25:14.357Z",
    "dateUpdated": "2026-10-19T09:21:45.378Z",
    "state": "PUBLISHED"
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      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "nfp: hold IPsec RX state under the XArray lock",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98561.json",
      "version": "4"
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          }
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        "metrics": {},
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}



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