CVE-2026-68292 (GCVE-0-2026-68292)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:02 – Updated: 2026-08-17 05:02
VLAI
Title
ice: prevent tstamp ring allocation for non-PF VSI types
Summary
In the Linux kernel, the following vulnerability has been resolved: ice: prevent tstamp ring allocation for non-PF VSI types The pf->txtime_txqs bitmap tracks which Tx queues have ETF (Earliest TxTime First) offload enabled. This bitmap is indexed by queue number and is set by ice_offload_txtime(), which only operates on PF VSI queues. However, ice_is_txtime_ena() does not check the VSI type before consulting the bitmap. When ETF offload is enabled on PF Tx queue 0, bit 0 is set in pf->txtime_txqs. During a subsequent PCI reset rebuild, the CTRL VSI's Tx queue 0 is reconfigured and ice_is_txtime_ena() is called for that ring. Since it only checks pf->txtime_txqs by queue index without distinguishing VSI type, it finds bit 0 set and returns true, matching the PF VSI's ETF queue, not the CTRL VSI's. This causes ice_vsi_cfg_txq() to spuriously allocate a tstamp_ring for the CTRL VSI ring. Since CTRL VSI rings have no associated netdev, ice_clean_tx_ring() takes an early return at the !netdev check before reaching ice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset leaks one 64-byte tstamp_ring. Fix this by restricting ice_is_txtime_ena() to return true only for PF VSI rings, since txtime_txqs is only meaningful for PF VSI queues.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 , < 684d4d0bda95a3fb21b3e29ff0f668f657707b54 (git)
Affected: ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 , < d0a21604c6abfa4956f3a511a1de174cec77a812 (git)
Affected: ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 , < 144539bbfd3cea1ab0fb6f5216d6004c1f4f029b (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.42 , ≤ 6.18.* (semver)
Unaffected: 7.1.6 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/ice/ice.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.18"
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              "status": "unaffected",
              "version": "0",
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              "version": "6.18.42",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
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        }
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      "cpeApplicability": [
        {
          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: prevent tstamp ring allocation for non-PF VSI types\n\nThe pf-\u003etxtime_txqs bitmap tracks which Tx queues have ETF (Earliest\nTxTime First) offload enabled. This bitmap is indexed by queue number\nand is set by ice_offload_txtime(), which only operates on PF VSI\nqueues.\n\nHowever, ice_is_txtime_ena() does not check the VSI type before\nconsulting the bitmap. When ETF offload is enabled on PF Tx queue 0,\nbit 0 is set in pf-\u003etxtime_txqs. During a subsequent PCI reset\nrebuild, the CTRL VSI\u0027s Tx queue 0 is reconfigured and\nice_is_txtime_ena() is called for that ring. Since it only checks\npf-\u003etxtime_txqs by queue index without distinguishing VSI type, it\nfinds bit 0 set and returns true, matching the PF VSI\u0027s ETF queue,\nnot the CTRL VSI\u0027s. This causes ice_vsi_cfg_txq() to spuriously\nallocate a tstamp_ring for the CTRL VSI ring.\n\nSince CTRL VSI rings have no associated netdev, ice_clean_tx_ring()\ntakes an early return at the !netdev check before reaching\nice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset\nleaks one 64-byte tstamp_ring.\n\nFix this by restricting ice_is_txtime_ena() to return true only for\nPF VSI rings, since txtime_txqs is only meaningful for PF VSI queues."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:02:28.011Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/684d4d0bda95a3fb21b3e29ff0f668f657707b54"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0a21604c6abfa4956f3a511a1de174cec77a812"
        },
        {
          "url": "https://git.kernel.org/stable/c/144539bbfd3cea1ab0fb6f5216d6004c1f4f029b"
        }
      ],
      "title": "ice: prevent tstamp ring allocation for non-PF VSI types",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68292",
    "datePublished": "2026-08-10T12:02:25.414Z",
    "dateReserved": "2026-07-30T09:28:09.380Z",
    "dateUpdated": "2026-08-17T05:02:28.011Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-68292",
      "date": "2026-08-20",
      "epss": "0.00166",
      "percentile": "0.06323"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-68292\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-10T13:20:18.583\",\"lastModified\":\"2026-08-17T05:18:31.873\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nice: prevent tstamp ring allocation for non-PF VSI types\\n\\nThe pf-\u003etxtime_txqs bitmap tracks which Tx queues have ETF (Earliest\\nTxTime First) offload enabled. This bitmap is indexed by queue number\\nand is set by ice_offload_txtime(), which only operates on PF VSI\\nqueues.\\n\\nHowever, ice_is_txtime_ena() does not check the VSI type before\\nconsulting the bitmap. When ETF offload is enabled on PF Tx queue 0,\\nbit 0 is set in pf-\u003etxtime_txqs. During a subsequent PCI reset\\nrebuild, the CTRL VSI\u0027s Tx queue 0 is reconfigured and\\nice_is_txtime_ena() is called for that ring. Since it only checks\\npf-\u003etxtime_txqs by queue index without distinguishing VSI type, it\\nfinds bit 0 set and returns true, matching the PF VSI\u0027s ETF queue,\\nnot the CTRL VSI\u0027s. This causes ice_vsi_cfg_txq() to spuriously\\nallocate a tstamp_ring for the CTRL VSI ring.\\n\\nSince CTRL VSI rings have no associated netdev, ice_clean_tx_ring()\\ntakes an early return at the !netdev check before reaching\\nice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset\\nleaks one 64-byte tstamp_ring.\\n\\nFix this by restricting ice_is_txtime_ena() to return true only for\\nPF VSI rings, since txtime_txqs is only meaningful for PF VSI queues.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/intel/ice/ice.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ccde82e909467abdf098a8ee6f63e1ecf9a47ce5\",\"lessThan\":\"684d4d0bda95a3fb21b3e29ff0f668f657707b54\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ccde82e909467abdf098a8ee6f63e1ecf9a47ce5\",\"lessThan\":\"d0a21604c6abfa4956f3a511a1de174cec77a812\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ccde82e909467abdf098a8ee6f63e1ecf9a47ce5\",\"lessThan\":\"144539bbfd3cea1ab0fb6f5216d6004c1f4f029b\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/intel/ice/ice.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.18\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.18\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.42\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.6\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/144539bbfd3cea1ab0fb6f5216d6004c1f4f029b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/684d4d0bda95a3fb21b3e29ff0f668f657707b54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d0a21604c6abfa4956f3a511a1de174cec77a812\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-11T16:47:47+00:00",
      "cve": "CVE-2026-68292",
      "id": "CVE-2026-68292",
      "initial_release_date": "2026-08-10T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ice: prevent tstamp ring allocation for non-PF VSI types",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-68292.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-14T23:45:06Z",
      "cve": "CVE-2026-68292",
      "id": "CVE-2026-68292",
      "initial_release_date": "2026-08-14T17:14:38Z",
      "product_status:known_not_affected": "296",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-68292",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-68292.json",
      "version": "3"
    }
  }
}



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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

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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.