Vulnerability-Lookup

GHSA-3C34-Q5W8-C59M

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

In the Linux kernel, the following vulnerability has been resolved:

net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()

qrtr_endpoint_post() validates an incoming packet with

if (!size || len != ALIGN(size, 4) + hdrlen)
    goto err;

where size comes from the wire. On 32-bit, size_t is 32 bits and ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check passes and skb_put_data(skb, data + hdrlen, size) writes past the hdrlen-sized skb and oopses the kernel. 64-bit is unaffected.

This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB Read in qrtr_endpoint_post"), which fixed only the 64-bit case.

Reject any size that cannot fit the buffer before the ALIGN.

Severity

8.4 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72298"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:02Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()\n\nqrtr_endpoint_post() validates an incoming packet with\n\n\tif (!size || len != ALIGN(size, 4) + hdrlen)\n\t\tgoto err;\n\nwhere size comes from the wire. On 32-bit, size_t is 32 bits and\nALIGN(size, 4) wraps to 0 for size \u003e= 0xfffffffd, so the check\npasses and skb_put_data(skb, data + hdrlen, size) writes past the\nhdrlen-sized skb and oopses the kernel. 64-bit is unaffected.\n\nThis is the 32-bit residual of ad9d24c9429e2 (\"net: qrtr: fix OOB\nRead in qrtr_endpoint_post\"), which fixed only the 64-bit case.\n\nReject any size that cannot fit the buffer before the ALIGN.",
  "id": "GHSA-3c34-q5w8-c59m",
  "modified": "2026-08-17T06:33:22Z",
  "published": "2026-08-15T06:32:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72298"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-72298 (GCVE-0-2026-72298)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:42

Title

net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()

Summary

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post() qrtr_endpoint_post() validates an incoming packet with if (!size || len != ALIGN(size, 4) + hdrlen) goto err; where size comes from the wire. On 32-bit, size_t is 32 bits and ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check passes and skb_put_data(skb, data + hdrlen, size) writes past the hdrlen-sized skb and oopses the kernel. 64-bit is unaffected. This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB Read in qrtr_endpoint_post"), which fixed only the 64-bit case. Reject any size that cannot fit the buffer before the ALIGN.

Severity

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/3665e644ea081c462…
https://git.kernel.org/stable/c/b609f7f46916c6b05…
https://git.kernel.org/stable/c/242408b5b763c0128…
https://git.kernel.org/stable/c/d0597074e99731fda…
https://git.kernel.org/stable/c/689b7267f8632b466…
https://git.kernel.org/stable/c/22100a8f73d4ae4f1…
https://git.kernel.org/stable/c/7f72c285f6d3bf639…
https://git.kernel.org/stable/c/20054869770c7df06…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 960b08dd36de1e341e3eb43d1c547513e338f4f8 , < 3665e644ea081c4624a1637023b0de3b29f4ae04 (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < b609f7f46916c6b05585ca82455077198a23770f (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < 242408b5b763c01288adf3113cbce84378a76e1a (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < d0597074e99731fdad5593e4f6d056a3866f2cab (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < 689b7267f8632b4661879dc323e26ebb60978afb (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < 22100a8f73d4ae4f17697dae93d4e2e1d283a6ec (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < 7f72c285f6d3bf63968a0344beee8ab1b370198b (git) Affected: ad9d24c9429e2159d1e279dc3a83191ccb4daf1d , < 20054869770c7df060c5ecee3e8bbf9029c47191 (git) Affected: f8111c0d7ed42ede41a3d0d393b104de0730a8a6 (git) Affected: 26b8d10703a9be45d6097946b2b4011f7dd2c56f (git) Affected: 19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe (git) Affected: 5.10.46 , < 5.10.261 (semver) Affected: 4.19.196 , < 4.20 (semver) Affected: 5.4.128 , < 5.5 (semver) Affected: 5.12.13 , < 5.13 (semver)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/qrtr/af_qrtr.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "3665e644ea081c4624a1637023b0de3b29f4ae04",
              "status": "affected",
              "version": "960b08dd36de1e341e3eb43d1c547513e338f4f8",
              "versionType": "git"
            },
            {
              "lessThan": "b609f7f46916c6b05585ca82455077198a23770f",
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "versionType": "git"
            },
            {
              "lessThan": "242408b5b763c01288adf3113cbce84378a76e1a",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "689b7267f8632b4661879dc323e26ebb60978afb",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "22100a8f73d4ae4f17697dae93d4e2e1d283a6ec",
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              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "versionType": "git"
            },
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              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "versionType": "git"
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              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f8111c0d7ed42ede41a3d0d393b104de0730a8a6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26b8d10703a9be45d6097946b2b4011f7dd2c56f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.261",
              "status": "affected",
              "version": "5.10.46",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.196",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.128",
              "versionType": "semver"
            },
            {
              "lessThan": "5.13",
              "status": "affected",
              "version": "5.12.13",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "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": "5.10.261",
                  "versionStartIncluding": "5.10.46",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.196",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.128",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.12.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()\n\nqrtr_endpoint_post() validates an incoming packet with\n\n\tif (!size || len != ALIGN(size, 4) + hdrlen)\n\t\tgoto err;\n\nwhere size comes from the wire. On 32-bit, size_t is 32 bits and\nALIGN(size, 4) wraps to 0 for size \u003e= 0xfffffffd, so the check\npasses and skb_put_data(skb, data + hdrlen, size) writes past the\nhdrlen-sized skb and oopses the kernel. 64-bit is unaffected.\n\nThis is the 32-bit residual of ad9d24c9429e2 (\"net: qrtr: fix OOB\nRead in qrtr_endpoint_post\"), which fixed only the 64-bit case.\n\nReject any size that cannot fit the buffer before the ALIGN."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - qrtr_endpoint_post() is only reachable via local injection paths\u2014write()/io_submit to /dev/qrtr-tun or inbound SMD/MHI frames from the on-SoC modem/coprocessor; AF_QIPCRTR sendmsg never enters this function and QRTR is not an Internet-facing protocol.\nAC:L - The attacker fully controls the wire size field and total packet length; on 32-bit kernels, setting size\u003e=0xfffffffd with len equal to the header length deterministically wraps ALIGN() to bypass validation without races or special victim state.\nPR:N - On Qualcomm deployments the primary path is QRTR_SMD/MHI, where the AP kernel accepts ipcrouter frames from the baseband without Linux credentials or QRTR authentication, so a malicious or compromised modem sender needs no AP privileges.\nUI:N - Exploitation requires delivering a single crafted QRTR packet to qrtr_endpoint_post(); no victim interaction such as mounting filesystems, opening files, or clicking prompts is needed.\nS:U - Impact is kernel heap corruption and denial of service on the application processor; it does not cross a VM/host boundary, IOMMU boundary, or other separate security authority.\nC:H - Bypassing validation causes skb_put_data() to memcpy() ~4GB from a hdrlen-sized input buffer, performing slab out-of-bounds reads of adjacent kernel heap memory that can disclose sensitive data.\nI:H - The same skb_put_data() call performs skb_put() with the wrapped size, writing far beyond the len-sized skb allocation and corrupting adjacent slab objects, enabling potential control-flow hijacking.\nA:H - The oversized skb_put_data() triggers skb_over_panic/kernel oops as documented in the fix commit, reliably crashing affected 32-bit kernels and causing denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:42:31.352Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04"
        },
        {
          "url": "https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f"
        },
        {
          "url": "https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab"
        },
        {
          "url": "https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb"
        },
        {
          "url": "https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b"
        },
        {
          "url": "https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191"
        }
      ],
      "title": "net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72298",
    "datePublished": "2026-08-15T05:55:18.529Z",
    "dateReserved": "2026-08-09T03:40:39.917Z",
    "dateUpdated": "2026-08-17T05:42:31.352Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-3C34-Q5W8-C59M

CVE-2026-72298 (GCVE-0-2026-72298)

Tags

Sightings

Nomenclature