CVE-2026-53235 (GCVE-0-2026-53235)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-28 06:40
VLAI
Title
net: add pskb_may_pull() to skb_gro_receive_list()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: add pskb_may_pull() to skb_gro_receive_list() skb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without first ensuring the data is in the linear area via pskb_may_pull(). When the skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in page fragments) while skb_gro_offset is non-zero (after IP+TCP header parsing). The skb_pull() then decrements skb->len by skb_gro_offset but skb->data_len stays unchanged, hitting BUG_ON(skb->len < skb->data_len) in __skb_pull(). The UDP fraglist GRO path already contains this guard at udp_offload.c:749. Adding it to skb_gro_receive_list() itself provides centralized protection for all callers (TCP, UDP, and any future protocols), and ensures the precondition of skb_pull() is satisfied before it is called. On pskb_may_pull() failure, set NAPI_GRO_CB(skb)->flush = 1 so the skb is not held as a new GRO head and is instead delivered through the normal receive path, matching the UDP handling.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8d95dc474f85481652a0e422d2f1f079de81f63c , < 9e636c995b7beeb74ea882968248752821c244c4 (git)
Affected: 8d95dc474f85481652a0e422d2f1f079de81f63c , < 0cde3a004119db637b401c54e77536e4145fc0b4 (git)
Affected: 8d95dc474f85481652a0e422d2f1f079de81f63c , < 848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac (git)
Affected: 8d95dc474f85481652a0e422d2f1f079de81f63c , < f2bb3434544454099a5b6dec213567267b05d79d (git)
Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/gro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9e636c995b7beeb74ea882968248752821c244c4",
              "status": "affected",
              "version": "8d95dc474f85481652a0e422d2f1f079de81f63c",
              "versionType": "git"
            },
            {
              "lessThan": "0cde3a004119db637b401c54e77536e4145fc0b4",
              "status": "affected",
              "version": "8d95dc474f85481652a0e422d2f1f079de81f63c",
              "versionType": "git"
            },
            {
              "lessThan": "848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac",
              "status": "affected",
              "version": "8d95dc474f85481652a0e422d2f1f079de81f63c",
              "versionType": "git"
            },
            {
              "lessThan": "f2bb3434544454099a5b6dec213567267b05d79d",
              "status": "affected",
              "version": "8d95dc474f85481652a0e422d2f1f079de81f63c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/gro.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.94",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add pskb_may_pull() to skb_gro_receive_list()\n\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\nparsing). The skb_pull() then decrements skb-\u003elen by skb_gro_offset\nbut skb-\u003edata_len stays unchanged, hitting BUG_ON(skb-\u003elen \u003c skb-\u003edata_len)\nin __skb_pull().\n\nThe UDP fraglist GRO path already contains this guard at\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\ncentralized protection for all callers (TCP, UDP, and any future\nprotocols), and ensures the precondition of skb_pull() is satisfied\nbefore it is called.\n\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)-\u003eflush = 1 so the\nskb is not held as a new GRO head and is instead delivered through the\nnormal receive path, matching the UDP handling."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-28T06:40:45.131Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4"
        },
        {
          "url": "https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac"
        },
        {
          "url": "https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d"
        }
      ],
      "title": "net: add pskb_may_pull() to skb_gro_receive_list()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53235",
    "datePublished": "2026-06-25T08:39:32.518Z",
    "dateReserved": "2026-06-09T07:44:35.393Z",
    "dateUpdated": "2026-06-28T06:40:45.131Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-53235",
      "date": "2026-07-02",
      "epss": "0.00466",
      "percentile": "0.37052"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53235\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-25T09:16:41.397\",\"lastModified\":\"2026-06-30T14:44:27.313\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: add pskb_may_pull() to skb_gro_receive_list()\\n\\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\\nparsing). The skb_pull() then decrements skb-\u003elen by skb_gro_offset\\nbut skb-\u003edata_len stays unchanged, hitting BUG_ON(skb-\u003elen \u003c skb-\u003edata_len)\\nin __skb_pull().\\n\\nThe UDP fraglist GRO path already contains this guard at\\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\\ncentralized protection for all callers (TCP, UDP, and any future\\nprotocols), and ensures the precondition of skb_pull() is satisfied\\nbefore it is called.\\n\\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)-\u003eflush = 1 so the\\nskb is not held as a new GRO head and is instead delivered through the\\nnormal receive path, matching the UDP handling.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/core/gro.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8d95dc474f85481652a0e422d2f1f079de81f63c\",\"lessThan\":\"9e636c995b7beeb74ea882968248752821c244c4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8d95dc474f85481652a0e422d2f1f079de81f63c\",\"lessThan\":\"0cde3a004119db637b401c54e77536e4145fc0b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8d95dc474f85481652a0e422d2f1f079de81f63c\",\"lessThan\":\"848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8d95dc474f85481652a0e422d2f1f079de81f63c\",\"lessThan\":\"f2bb3434544454099a5b6dec213567267b05d79d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/core/gro.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.94\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.36\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.13\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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.