CVE-2024-26898 (GCVE-0-2024-26898)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2026-08-05 11:28
VLAI
Title
aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
Summary
In the Linux kernel, the following vulnerability has been resolved: aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts This patch is against CVE-2023-6270. The description of cve is: A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution. In aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial code is finished. But the net_device ifp will still be used in later tx()->dev_queue_xmit() in kthread. Which means that the dev_put(ifp) should NOT be called in the success path of skb initial code in aoecmd_cfg_pkts(). Otherwise tx() may run into use-after-free because the net_device is freed. This patch removed the dev_put(ifp) in the success path in aoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-12 16:22 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < ad80c34944d7175fa1f5c7a55066020002921a99 (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < 1a54aa506b3b2f31496731039e49778f54eee881 (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < faf0b4c5e00bb680e8e43ac936df24d3f48c8e65 (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < 7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4 (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < 74ca3ef68d2f449bc848c0a814cefc487bf755fa (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < eb48680b0255a9e8a9bdc93d6a55b11c31262e62 (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < 079cba4f4e307c69878226fdf5228c20aa1c969c (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < a16fbb80064634b254520a46395e36b87ca4731e (git)
Affected: 7562f876cd93800f2f8c89445f2a563590b24e09 , < f98364e926626c678fb4b9004b75cacf92ff0662 (git)
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Linux Linux Affected: 2.6.22
Unaffected: 0 , < 2.6.22 (semver)
Unaffected: 4.19.311 , ≤ 4.19.* (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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linux linux_kernel Affected: 2.6.22
    cpe:2.3:o:linux:linux_kernel:2.6.22:-:*:*:*:*:*:*
 Create a notification for this product.
linux linux_kernel Affected: 7562f876cd93 , < ad80c34944d7 (git)
Affected: 7562f876cd93 , < 1a54aa506b3b (git)
Affected: 7562f876cd93 , < faf0b4c5e00b (git)
Affected: 7562f876cd93 , < 7dd09fa80b07 (git)
Affected: 7562f876cd93 , < 74ca3ef68d2f (git)
Affected: 7562f876cd93 , < eb48680b0255 (git)
Affected: 7562f876cd93 , < 079cba4f4e30 (git)
Affected: 7562f876cd93 , < a16fbb800646 (git)
Affected: 7562f876cd93 , < f98364e92662 (git)
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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              "value": "AV:L - `aoecmd_cfg_pkts()` is reachable only from `aoecmd_cfg()`, whose callers are the module\u0027s 60-second `discover_timer` (drivers/block/aoe/aoemain.c:21), writes to the local char devices `/dev/etherd/discover` and `/dev/etherd/revalidate` (drivers/block/aoe/aoechr.c:74,114), and `aoeblk_release()` on last close of an AoE block device; no inbound AoE frame path (`aoenet_rcv` \u2192 `aoecmd_cfg_rsp`) reaches it, so local access is required.\nAC:L - The attacker controls both sides of the race: the queueing side can be driven at will (each `write()` to `/dev/etherd/discover` enumerates every `init_net` netdev and pushes an skb holding an unreferenced `skb-\u003edev` onto the global `skbtxq`, and the kernel timer does it unprompted every 60s), while the window between the erroneous `dev_put(ifp)` and the deferred `dev_queue_xmit(skb)` in the `aoe_tx` kthread is widened arbitrarily by flooding `skbtxq` and loading the CPU; init_net netdev teardown is either directly inducible (e.g. `PPPIOCNEWUNIT`/close on `/dev/ppp`, which carries no capability check) or occurs routinely from container veth churn, VPN teardown and NIC hotplug, so the attack is repeatable until it succeeds.\nPR:L - No capability check exists anywhere on the path \u2014 `aoechr_open()` only validates the minor number, and access is gated purely by file permissions on `/dev/etherd/*`, which distro aoetools udev rules grant to the unprivileged `disk` group; an ordinary local user with that access (or with any AoE block device fd, via the `aoeblk_release()` path) can drive discovery, and the periodic timer keeps the vulnerable code executing even with zero attacker action.\nUI:N - The discovery packets are generated by the attacker\u0027s own writes or by the driver\u0027s automatic one-minute timer, and the freed `net_device` is dereferenced in the `aoe_tx` kthread; no action by any other user is required.\nS:U - The freed `struct net_device` and the code that dereferences it both live in the kernel\u0027s own security authority; this is in-kernel memory corruption, not a VM, IOMMU or sandbox boundary crossing.\nC:H - This is a use-after-free on a `struct net_device` whose contents the attacker can reclaim via heap spraying; `tx()` reads `ifp-\u003ename` into a `pr_warn()` (leaking freed heap contents to dmesg) and `dev_queue_xmit()` walks `dev-\u003eflags`, `dev-\u003e_tx`, `dev-\u003enum_tx_queues` and `dev-\u003enetdev_ops` from the freed object, yielding attacker-steered out-of-bounds reads of kernel memory.\nI:H - `__dev_queue_xmit()` on the freed device loads and calls function pointers (`netdev_ops-\u003endo_select_queue`, `ndo_start_xmit`, `q-\u003eenqueue`) and indexes the `dev-\u003e_tx` queue array from reclaimed, attacker-controlled memory, giving a control-flow hijack and out-of-bounds write primitive, not merely a stale read.\nA:H - Even unexploited, transmitting on a freed `net_device` reliably produces a kernel oops or panic in the `aoe_tx` kthread, and the attacker can repeat the trigger indefinitely."
            }
          ]
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      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:28:13.796Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99"
        },
        {
          "url": "https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881"
        },
        {
          "url": "https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65"
        },
        {
          "url": "https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4"
        },
        {
          "url": "https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62"
        },
        {
          "url": "https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662"
        }
      ],
      "title": "aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26898",
    "datePublished": "2024-04-17T10:27:48.466Z",
    "dateReserved": "2024-02-19T14:20:24.186Z",
    "dateUpdated": "2026-08-05T11:28:13.796Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "epss": {
      "cve": "CVE-2024-26898",
      "date": "2026-08-12",
      "epss": "0.00305",
      "percentile": "0.22979"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.6.22\", \"versionEndExcluding\": \"4.19.311\", \"matchCriteriaId\": \"0C11EA91-49A5-48C2-88DC-31A895CF5BA4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"4.20\", \"versionEndExcluding\": \"5.4.273\", \"matchCriteriaId\": \"620FD8B7-BF03-43E0-951A-0A58461D4C55\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.5\", \"versionEndExcluding\": \"5.10.214\", \"matchCriteriaId\": \"65987874-467B-4D3B-91D6-68A129B34FB8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.11\", \"versionEndExcluding\": \"5.15.153\", \"matchCriteriaId\": \"ACB69438-845D-4E3C-B114-3140611F9C0B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"5.16\", \"versionEndExcluding\": \"6.1.83\", \"matchCriteriaId\": \"121A07F6-F505-4C47-86BF-9BB6CC7B6C19\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.23\", \"matchCriteriaId\": \"E00814DC-0BA7-431A-9926-80FEB4A96C68\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.7.11\", \"matchCriteriaId\": \"9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.8\", \"versionEndExcluding\": \"6.8.2\", \"matchCriteriaId\": \"543A75FF-25B8-4046-A514-1EA8EDD87AB1\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\naoe: fix the potential use-after-free problem in aoecmd_cfg_pkts\\n\\nThis patch is against CVE-2023-6270. The description of cve is:\\n\\n  A flaw was found in the ATA over Ethernet (AoE) driver in the Linux\\n  kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on\\n  `struct net_device`, and a use-after-free can be triggered by racing\\n  between the free on the struct and the access through the `skbtxq`\\n  global queue. This could lead to a denial of service condition or\\n  potential code execution.\\n\\nIn aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial\\ncode is finished. But the net_device ifp will still be used in\\nlater tx()-\u003edev_queue_xmit() in kthread. Which means that the\\ndev_put(ifp) should NOT be called in the success path of skb\\ninitial code in aoecmd_cfg_pkts(). Otherwise tx() may run into\\nuse-after-free because the net_device is freed.\\n\\nThis patch removed the dev_put(ifp) in the success path in\\naoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: aoe: soluciona el posible problema de use-after-free en aoecmd_cfg_pkts. Este parche es contra CVE-2023-6270. La descripci\\u00f3n de cve es: Se encontr\\u00f3 una falla en el controlador ATA sobre Ethernet (AoE) en el kernel de Linux. La funci\\u00f3n aoecmd_cfg_pkts() actualiza incorrectamente el refcnt en `struct net_device`, y se puede activar un use-after-free corriendo entre lo libre en la estructura y el acceso a trav\\u00e9s de la cola global `skbtxq`. Esto podr\\u00eda provocar una condici\\u00f3n de denegaci\\u00f3n de servicio o una posible ejecuci\\u00f3n de c\\u00f3digo. En aoecmd_cfg_pkts(), siempre llama a dev_put(ifp) cuando finaliza el c\\u00f3digo inicial de skb. Pero el ifp net_device todav\\u00eda se usar\\u00e1 en tx()-\u0026gt;dev_queue_xmit() posterior en kthread. Lo que significa que NO se debe llamar a dev_put(ifp) en la ruta exitosa del c\\u00f3digo inicial de skb en aoecmd_cfg_pkts(). De lo contrario, tx() puede ejecutar use-after-free porque el net_device est\\u00e1 liberado. Este parche elimin\\u00f3 dev_put(ifp) en la ruta de \\u00e9xito en aoecmd_cfg_pkts() y agreg\\u00f3 dev_put() despu\\u00e9s de skb xmit en tx().\"}]",
      "id": "CVE-2024-26898",
      "lastModified": "2024-11-21T09:03:19.907",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.0, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.0, \"impactScore\": 5.9}]}",
      "published": "2024-04-17T11:15:10.820",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-18T02:53:21.000Z",
      "cve": "CVE-2024-26898",
      "id": "msrc_CVE-2024-26898",
      "initial_release_date": "2024-04-02T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-26898.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26898\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-17T11:15:10.820\",\"lastModified\":\"2026-08-04T11:17:19.530\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\naoe: fix the potential use-after-free problem in aoecmd_cfg_pkts\\n\\nThis patch is against CVE-2023-6270. The description of cve is:\\n\\n  A flaw was found in the ATA over Ethernet (AoE) driver in the Linux\\n  kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on\\n  `struct net_device`, and a use-after-free can be triggered by racing\\n  between the free on the struct and the access through the `skbtxq`\\n  global queue. This could lead to a denial of service condition or\\n  potential code execution.\\n\\nIn aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial\\ncode is finished. But the net_device ifp will still be used in\\nlater tx()-\u003edev_queue_xmit() in kthread. Which means that the\\ndev_put(ifp) should NOT be called in the success path of skb\\ninitial code in aoecmd_cfg_pkts(). Otherwise tx() may run into\\nuse-after-free because the net_device is freed.\\n\\nThis patch removed the dev_put(ifp) in the success path in\\naoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: aoe: soluciona el posible problema de use-after-free en aoecmd_cfg_pkts. Este parche es contra CVE-2023-6270. La descripci\u00f3n de cve es: Se encontr\u00f3 una falla en el controlador ATA sobre Ethernet (AoE) en el kernel de Linux. La funci\u00f3n aoecmd_cfg_pkts() actualiza incorrectamente el refcnt en `struct net_device`, y se puede activar un use-after-free corriendo entre lo libre en la estructura y el acceso a trav\u00e9s de la cola global `skbtxq`. Esto podr\u00eda provocar una condici\u00f3n de denegaci\u00f3n de servicio o una posible ejecuci\u00f3n de c\u00f3digo. En aoecmd_cfg_pkts(), siempre llama a dev_put(ifp) cuando finaliza el c\u00f3digo inicial de skb. Pero el ifp net_device todav\u00eda se usar\u00e1 en tx()-\u0026gt;dev_queue_xmit() posterior en kthread. Lo que significa que NO se debe llamar a dev_put(ifp) en la ruta exitosa del c\u00f3digo inicial de skb en aoecmd_cfg_pkts(). De lo contrario, tx() puede ejecutar use-after-free porque el net_device est\u00e1 liberado. Este parche elimin\u00f3 dev_put(ifp) en la ruta de \u00e9xito en aoecmd_cfg_pkts() y agreg\u00f3 dev_put() despu\u00e9s de skb xmit en 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:48:39+00:00",
      "cve": "CVE-2024-26898",
      "id": "CVE-2024-26898",
      "initial_release_date": "2024-04-17T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-26898.json",
      "version": "3"
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      "current_release_date": "2025-07-01T00:12:25Z",
      "cve": "CVE-2024-26898",
      "id": "CVE-2024-26898",
      "initial_release_date": "2024-04-19T02:18:34Z",
      "product_status:known_affected": "49",
      "product_status:known_not_affected": "34",
      "product_status:recommended": "663",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-26898",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-26898.json",
      "version": "54"
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`aoecmd_cfg_pkts()` is reachable only from `aoecmd_cfg()`, whose callers are the module\u0027s 60-second `discover_timer` (drivers/block/aoe/aoemain.c:21), writes to the local char devices `/dev/etherd/discover` and `/dev/etherd/revalidate` (drivers/block/aoe/aoechr.c:74,114), and `aoeblk_release()` on last close of an AoE block device; no inbound AoE frame path (`aoenet_rcv` \\u2192 `aoecmd_cfg_rsp`) reaches it, so local access is required.\\nAC:L - The attacker controls both sides of the race: the queueing side can be driven at will (each `write()` to `/dev/etherd/discover` enumerates every `init_net` netdev and pushes an skb holding an unreferenced `skb-\u003edev` onto the global `skbtxq`, and the kernel timer does it unprompted every 60s), while the window between the erroneous `dev_put(ifp)` and the deferred `dev_queue_xmit(skb)` in the `aoe_tx` kthread is widened arbitrarily by flooding `skbtxq` and loading the CPU; init_net netdev teardown is either directly inducible (e.g. `PPPIOCNEWUNIT`/close on `/dev/ppp`, which carries no capability check) or occurs routinely from container veth churn, VPN teardown and NIC hotplug, so the attack is repeatable until it succeeds.\\nPR:L - No capability check exists anywhere on the path \\u2014 `aoechr_open()` only validates the minor number, and access is gated purely by file permissions on `/dev/etherd/*`, which distro aoetools udev rules grant to the unprivileged `disk` group; an ordinary local user with that access (or with any AoE block device fd, via the `aoeblk_release()` path) can drive discovery, and the periodic timer keeps the vulnerable code executing even with zero attacker action.\\nUI:N - The discovery packets are generated by the attacker\u0027s own writes or by the driver\u0027s automatic one-minute timer, and the freed `net_device` is dereferenced in the `aoe_tx` kthread; no action by any other user is required.\\nS:U - The freed `struct net_device` and the code that dereferences it both live in the kernel\u0027s own security authority; this is in-kernel memory corruption, not a VM, IOMMU or sandbox boundary crossing.\\nC:H - This is a use-after-free on a `struct net_device` whose contents the attacker can reclaim via heap spraying; `tx()` reads `ifp-\u003ename` into a `pr_warn()` (leaking freed heap contents to dmesg) and `dev_queue_xmit()` walks `dev-\u003eflags`, `dev-\u003e_tx`, `dev-\u003enum_tx_queues` and `dev-\u003enetdev_ops` from the freed object, yielding attacker-steered out-of-bounds reads of kernel memory.\\nI:H - `__dev_queue_xmit()` on the freed device loads and calls function pointers (`netdev_ops-\u003endo_select_queue`, `ndo_start_xmit`, `q-\u003eenqueue`) and indexes the `dev-\u003e_tx` queue array from reclaimed, attacker-controlled memory, giving a control-flow hijack and out-of-bounds write primitive, not merely a stale read.\\nA:H - Even unexploited, transmitting on a freed `net_device` reliably produces a kernel oops or panic in the `aoe_tx` kthread, and the attacker can repeat the trigger indefinitely.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"ad80c34944d7175fa1f5c7a55066020002921a99\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"1a54aa506b3b2f31496731039e49778f54eee881\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"faf0b4c5e00bb680e8e43ac936df24d3f48c8e65\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"74ca3ef68d2f449bc848c0a814cefc487bf755fa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"eb48680b0255a9e8a9bdc93d6a55b11c31262e62\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"079cba4f4e307c69878226fdf5228c20aa1c969c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"a16fbb80064634b254520a46395e36b87ca4731e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7562f876cd93800f2f8c89445f2a563590b24e09\", \"lessThan\": \"f98364e926626c678fb4b9004b75cacf92ff0662\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/block/aoe/aoecmd.c\", \"drivers/block/aoe/aoenet.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2.6.22\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.22\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.311\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.273\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.214\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.153\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.23\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.8.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/block/aoe/aoecmd.c\", \"drivers/block/aoe/aoenet.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/ad80c34944d7175fa1f5c7a55066020002921a99\"}, {\"url\": \"https://git.kernel.org/stable/c/1a54aa506b3b2f31496731039e49778f54eee881\"}, {\"url\": \"https://git.kernel.org/stable/c/faf0b4c5e00bb680e8e43ac936df24d3f48c8e65\"}, {\"url\": \"https://git.kernel.org/stable/c/7dd09fa80b0765ce68bfae92f4e2f395ccf0fba4\"}, {\"url\": \"https://git.kernel.org/stable/c/74ca3ef68d2f449bc848c0a814cefc487bf755fa\"}, {\"url\": \"https://git.kernel.org/stable/c/eb48680b0255a9e8a9bdc93d6a55b11c31262e62\"}, {\"url\": \"https://git.kernel.org/stable/c/079cba4f4e307c69878226fdf5228c20aa1c969c\"}, {\"url\": \"https://git.kernel.org/stable/c/a16fbb80064634b254520a46395e36b87ca4731e\"}, {\"url\": \"https://git.kernel.org/stable/c/f98364e926626c678fb4b9004b75cacf92ff0662\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\naoe: fix the potential use-after-free problem in aoecmd_cfg_pkts\\n\\nThis patch is against CVE-2023-6270. The description of cve is:\\n\\n  A flaw was found in the ATA over Ethernet (AoE) driver in the Linux\\n  kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on\\n  `struct net_device`, and a use-after-free can be triggered by racing\\n  between the free on the struct and the access through the `skbtxq`\\n  global queue. This could lead to a denial of service condition or\\n  potential code execution.\\n\\nIn aoecmd_cfg_pkts(), it always calls dev_put(ifp) when skb initial\\ncode is finished. But the net_device ifp will still be used in\\nlater tx()-\u003edev_queue_xmit() in kthread. Which means that the\\ndev_put(ifp) should NOT be called in the success path of skb\\ninitial code in aoecmd_cfg_pkts(). Otherwise tx() may run into\\nuse-after-free because the net_device is freed.\\n\\nThis patch removed the dev_put(ifp) in the success path in\\naoecmd_cfg_pkts(), and added dev_put() after skb xmit in tx().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.311\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.273\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.214\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.153\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.83\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.23\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.11\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8.2\", \"versionStartIncluding\": \"2.6.22\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9\", \"versionStartIncluding\": \"2.6.22\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T11:28:13.796Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26898\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:28:13.796Z\", \"dateReserved\": \"2024-02-19T14:20:24.186Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:27:48.466Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.