CVE-2026-74622 (GCVE-0-2026-74622)
Vulnerability from cvelistv5
Published
2026-08-22 15:32
Modified
2026-08-22 15:32
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: atlantic: free RX pages of consumed but not refilled buffers aq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to hardware. Since the page reuse strategy was added, a cleaned RX buffer keeps its page (and its DMA mapping) in the ring for reuse, and refill is batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES slots are free. Slots that were consumed but not yet reposted therefore sit in the complementary [sw_tail, sw_head) gap with a live page, and the deinit walk never visits them: up to a refill batch worth of pages and DMA mappings leak on every interface down. Walk the whole ring instead and release whatever is still there. Also bail out if the buffer ring is already gone: a partial aq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so aq_ptp_ring_deinit() still gets here on the unwind path.
References
Impacted products
Vendor Product Version
Linux Linux Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
Version: 46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/aquantia/atlantic/aq_ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1e58b0bab40dcbdfc04acaba6a221d40801c3770",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "30c473ea097ef0c93b064281b3e295c97d17e28b",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "ff451bc4290b79c04f1c5cfa928d448f9d47ecf5",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "64e1346bc66b947eb80b848e4c8d9828ba50e0fe",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "782cc40b7ade4614a8aec0b948b8cf95c69f8d4b",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "24d87dc28ddd3771dd0e88719209811809729439",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            },
            {
              "lessThan": "e8e7471ef686b6c002218fee9671cc61992ae01a",
              "status": "affected",
              "version": "46f4c29d9de6e4a9d4ed7de9a37dd42501d89f86",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/aquantia/atlantic/aq_ring.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.152",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.152",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.104",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.45",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.9",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free RX pages of consumed but not refilled buffers\n\naq_ring_rx_deinit() only walks [sw_head, sw_tail), the region posted to\nhardware. Since the page reuse strategy was added, a cleaned RX buffer\nkeeps its page (and its DMA mapping) in the ring for reuse, and refill\nis batched: aq_ring_rx_fill() returns early until AQ_CFG_RX_REFILL_THRES\nslots are free. Slots that were consumed but not yet reposted therefore\nsit in the complementary [sw_tail, sw_head) gap with a live page, and\nthe deinit walk never visits them: up to a refill batch worth of pages\nand DMA mappings leak on every interface down.\n\nWalk the whole ring instead and release whatever is still there. Also\nbail out if the buffer ring is already gone: a partial\naq_ptp_ring_alloc() failure frees the ring but leaves aq_nic set, so\naq_ptp_ring_deinit() still gets here on the unwind path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-22T15:32:05.719Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1e58b0bab40dcbdfc04acaba6a221d40801c3770"
        },
        {
          "url": "https://git.kernel.org/stable/c/30c473ea097ef0c93b064281b3e295c97d17e28b"
        },
        {
          "url": "https://git.kernel.org/stable/c/17c99dd86f169c7a3e73d6778e79ef5b1ed3ceac"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff451bc4290b79c04f1c5cfa928d448f9d47ecf5"
        },
        {
          "url": "https://git.kernel.org/stable/c/64e1346bc66b947eb80b848e4c8d9828ba50e0fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/782cc40b7ade4614a8aec0b948b8cf95c69f8d4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/24d87dc28ddd3771dd0e88719209811809729439"
        },
        {
          "url": "https://git.kernel.org/stable/c/e8e7471ef686b6c002218fee9671cc61992ae01a"
        }
      ],
      "title": "net: atlantic: free RX pages of consumed but not refilled buffers",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74622",
    "datePublished": "2026-08-22T15:32:05.719Z",
    "dateReserved": "2026-08-15T05:44:03.921Z",
    "dateUpdated": "2026-08-22T15:32:05.719Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.