CVE-2026-98233 (GCVE-0-2026-98233)
Vulnerability from cvelistv5
Published
2026-10-06 08:45
Modified
2026-10-19 09:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/packet: clear RX owner on VNET header error Commit 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race condition") added rx_owner_map and made tpacket_rcv() claim a V1 or V2 ring slot before converting the virtio-net header. If the conversion fails, the drop path leaves the slot claimed. With a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves the only slot unavailable, so the ring also drops the next valid packet. Clear the ownership bit on this error path. TPACKET_V3 already clears its block state here.
References
Impacted products
Vendor Product Version
Linux Linux Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 61fad6816fc10fb8793a925d5c1256d1c3db0cd2
Version: 2975472e042e0bbfeeabddc5023cb8c011ec5a07
Version: 6fb0e4385928900ccb8697748555b3f54bba5193
Version: 86137342fd4cf52882842aa8d1318b2661f08e8a
Version: b06e4d3ed4044c2facf10a511d809f9aa29d960e
Version: 4.14.175   ≤
Version: 4.19.114   ≤
Version: 5.4.29   ≤
Version: 5.5.14   ≤
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: clear RX owner on VNET header error\n\nCommit 61fad6816fc1 (\"net/packet: tpacket_rcv: avoid a producer race\ncondition\") added rx_owner_map and made tpacket_rcv() claim a V1 or V2\nring slot before converting the virtio-net header.  If the conversion\nfails, the drop path leaves the slot claimed.\n\nWith a one-frame TPACKET_V2 ring, an unsupported UDP GSO packet leaves\nthe only slot unavailable, so the ring also drops the next valid packet.\n\nClear the ownership bit on this error path.  TPACKET_V3 already clears\nits block state here."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:16:05.070Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/bb10a0084c03a94364aeec542beddc5d49b59f59"
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        {
          "url": "https://git.kernel.org/stable/c/b8c0cb3069058c2d67b5c7c833b2833381ecffdc"
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          "url": "https://git.kernel.org/stable/c/2daa618e7ff19eefcbda281bc4c5998c4140f9cf"
        },
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          "url": "https://git.kernel.org/stable/c/23cd30498891d29a69ec9b75bd92f8a0f21f1342"
        },
        {
          "url": "https://git.kernel.org/stable/c/49a48a5aaf85fe69d2dc3fb334b4854fadf44e39"
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        {
          "url": "https://git.kernel.org/stable/c/805edbdcb8681da5f7ee43b3c3c809f7a8c31208"
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          "url": "https://git.kernel.org/stable/c/693209a237fc548791cf402441db8b68d1da7d38"
        },
        {
          "url": "https://git.kernel.org/stable/c/33ff111d7ba3beb86e28938d6382bb5beabd865a"
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      ],
      "title": "net/packet: clear RX owner on VNET header error",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98233",
    "datePublished": "2026-10-06T08:45:06.533Z",
    "dateReserved": "2026-09-25T10:25:14.328Z",
    "dateUpdated": "2026-10-19T09:16:05.070Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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