CVE-2026-74623 (GCVE-0-2026-74623)

Vulnerability from cvelistv5 – Published: 2026-08-22 15:32 – Updated: 2026-08-23 12:47
VLAI
Title
net: atlantic: free stranded TX buffers on ring deinit
Summary
In the Linux kernel, the following vulnerability has been resolved: net: atlantic: free stranded TX buffers on ring deinit aq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean() call, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and stops at hw_head, which no longer moves once aq_vec_stop() has stopped the hardware and NAPI. Completed descriptors beyond the budget and everything still posted in [hw_head, sw_tail) keep their skb or xdp_frame when the interface goes down: aq_vec_ring_free() then frees the buffer ring and the references are lost for good. Today this is a silent memory leak on every interface down under TX/XDP_TX load. With the conversion of the RX path to page_pool posted for net-next it becomes much more visible: XDP_TX frames carry fragment references on the RX ring's page_pool, so a single stranded frame keeps the pool's inflight count above zero forever. page_pool_destroy() then never completes, the pool is leaked together with its pages, and "page_pool_release_retry() stalled pool shutdown" is warned every 60 seconds from that point on, on every ifdown, XDP detach or ring resize under XDP_TX load. Bring back aq_ring_tx_deinit() as it was before the removal and use it for teardown again, with one extension: TX rings can hold xdp_frames nowadays, so release those too. They are returned with xdp_return_frame() since this runs in process context.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < a14ceebd13bf857bfca052bc5a6bd49e737912be (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < 4f1c20873f70b4b22ef86dc38dad1fda8e169bcd (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < 307d80193b4a4a75b8dc4e0d3162be3755abbed7 (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < 7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < 3447641d361dcc5511841d986ad4d849b2900d9b (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < b13202d401e1a20fec89b0cda733dcbaf279f79d (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < dd633280de7fdfd60dc4fcf63d04e2ad95b43269 (git)
Affected: eb36bedf28be6d986bdbcfa375bab08ffa45efd8 , < 452636ea5410a96e02ebaaf80b21e3620b98e0dd (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.10.266 , ≤ 5.10.* (semver)
Unaffected: 5.15.217 , ≤ 5.15.* (semver)
Unaffected: 6.1.183 , ≤ 6.1.* (semver)
Unaffected: 6.6.152 , ≤ 6.6.* (semver)
Unaffected: 6.12.104 , ≤ 6.12.* (semver)
Unaffected: 6.18.45 , ≤ 6.18.* (semver)
Unaffected: 7.1.9 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed 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",
            "drivers/net/ethernet/aquantia/atlantic/aq_ring.h",
            "drivers/net/ethernet/aquantia/atlantic/aq_vec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a14ceebd13bf857bfca052bc5a6bd49e737912be",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "4f1c20873f70b4b22ef86dc38dad1fda8e169bcd",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "307d80193b4a4a75b8dc4e0d3162be3755abbed7",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "3447641d361dcc5511841d986ad4d849b2900d9b",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "b13202d401e1a20fec89b0cda733dcbaf279f79d",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "dd633280de7fdfd60dc4fcf63d04e2ad95b43269",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            },
            {
              "lessThan": "452636ea5410a96e02ebaaf80b21e3620b98e0dd",
              "status": "affected",
              "version": "eb36bedf28be6d986bdbcfa375bab08ffa45efd8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/aquantia/atlantic/aq_ring.c",
            "drivers/net/ethernet/aquantia/atlantic/aq_ring.h",
            "drivers/net/ethernet/aquantia/atlantic/aq_vec.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.266",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.217",
              "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": "5.10.266",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.217",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.152",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.104",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.45",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.9",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: atlantic: free stranded TX buffers on ring deinit\n\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\nthe hardware and NAPI. Completed descriptors beyond the budget and\neverything still posted in [hw_head, sw_tail) keep their skb or\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\nthe buffer ring and the references are lost for good.\n\nToday this is a silent memory leak on every interface down under\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\nreferences on the RX ring\u0027s page_pool, so a single stranded frame keeps\nthe pool\u0027s inflight count above zero forever. page_pool_destroy() then\nnever completes, the pool is leaked together with its pages, and\n\"page_pool_release_retry() stalled pool shutdown\" is warned every 60\nseconds from that point on, on every ifdown, XDP detach or ring resize\nunder XDP_TX load.\n\nBring back aq_ring_tx_deinit() as it was before the removal and use it\nfor teardown again, with one extension: TX rings can hold xdp_frames\nnowadays, so release those too. They are returned with\nxdp_return_frame() since this runs in process context."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-23T12:47:48.573Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a14ceebd13bf857bfca052bc5a6bd49e737912be"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f1c20873f70b4b22ef86dc38dad1fda8e169bcd"
        },
        {
          "url": "https://git.kernel.org/stable/c/307d80193b4a4a75b8dc4e0d3162be3755abbed7"
        },
        {
          "url": "https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b"
        },
        {
          "url": "https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d"
        },
        {
          "url": "https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269"
        },
        {
          "url": "https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd"
        }
      ],
      "title": "net: atlantic: free stranded TX buffers on ring deinit",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74623",
    "datePublished": "2026-08-22T15:32:06.467Z",
    "dateReserved": "2026-08-15T05:44:03.921Z",
    "dateUpdated": "2026-08-23T12:47:48.573Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-74623",
      "date": "2026-08-29",
      "epss": "0.00177",
      "percentile": "0.0728"
    },
    "microsoft_vex": {
      "current_release_date": "2026-08-24T14:49:07.000Z",
      "cve": "CVE-2026-74623",
      "id": "msrc_CVE-2026-74623",
      "initial_release_date": "2026-08-24T01:06:05.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "net: atlantic: free stranded TX buffers on ring deinit",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-74623.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-74623\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-08-22T16:16:35.157\",\"lastModified\":\"2026-08-23T13:16:47.317\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: atlantic: free stranded TX buffers on ring deinit\\n\\naq_vec_deinit() drains the TX rings with a single aq_ring_tx_clean()\\ncall, which frees at most AQ_CFG_TX_CLEAN_BUDGET (256) descriptors and\\nstops at hw_head, which no longer moves once aq_vec_stop() has stopped\\nthe hardware and NAPI. Completed descriptors beyond the budget and\\neverything still posted in [hw_head, sw_tail) keep their skb or\\nxdp_frame when the interface goes down: aq_vec_ring_free() then frees\\nthe buffer ring and the references are lost for good.\\n\\nToday this is a silent memory leak on every interface down under\\nTX/XDP_TX load. With the conversion of the RX path to page_pool posted\\nfor net-next it becomes much more visible: XDP_TX frames carry fragment\\nreferences on the RX ring\u0027s page_pool, so a single stranded frame keeps\\nthe pool\u0027s inflight count above zero forever. page_pool_destroy() then\\nnever completes, the pool is leaked together with its pages, and\\n\\\"page_pool_release_retry() stalled pool shutdown\\\" is warned every 60\\nseconds from that point on, on every ifdown, XDP detach or ring resize\\nunder XDP_TX load.\\n\\nBring back aq_ring_tx_deinit() as it was before the removal and use it\\nfor teardown again, with one extension: TX rings can hold xdp_frames\\nnowadays, so release those too. They are returned with\\nxdp_return_frame() since this runs in process context.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/ethernet/aquantia/atlantic/aq_ring.c\",\"drivers/net/ethernet/aquantia/atlantic/aq_ring.h\",\"drivers/net/ethernet/aquantia/atlantic/aq_vec.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"a14ceebd13bf857bfca052bc5a6bd49e737912be\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"4f1c20873f70b4b22ef86dc38dad1fda8e169bcd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"307d80193b4a4a75b8dc4e0d3162be3755abbed7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"3447641d361dcc5511841d986ad4d849b2900d9b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"b13202d401e1a20fec89b0cda733dcbaf279f79d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"dd633280de7fdfd60dc4fcf63d04e2ad95b43269\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb36bedf28be6d986bdbcfa375bab08ffa45efd8\",\"lessThan\":\"452636ea5410a96e02ebaaf80b21e3620b98e0dd\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/ethernet/aquantia/atlantic/aq_ring.c\",\"drivers/net/ethernet/aquantia/atlantic/aq_ring.h\",\"drivers/net/ethernet/aquantia/atlantic/aq_vec.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.266\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.217\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.183\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.152\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.104\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.45\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.9\",\"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/307d80193b4a4a75b8dc4e0d3162be3755abbed7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3447641d361dcc5511841d986ad4d849b2900d9b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/452636ea5410a96e02ebaaf80b21e3620b98e0dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4f1c20873f70b4b22ef86dc38dad1fda8e169bcd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7a3e1481f4ee6c581bccc6bfc6c970aac5be7b0c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a14ceebd13bf857bfca052bc5a6bd49e737912be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b13202d401e1a20fec89b0cda733dcbaf279f79d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dd633280de7fdfd60dc4fcf63d04e2ad95b43269\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-24T14:48:36+00:00",
      "cve": "CVE-2026-74623",
      "id": "CVE-2026-74623",
      "initial_release_date": "2026-08-22T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: atlantic: free stranded TX buffers on ring deinit",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74623.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.