CVE-2026-72298 (GCVE-0-2026-72298)
Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:42
VLAI
EPSS
VEX
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)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| 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) |
guessed | |
| 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) |
guessed |
{
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{
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},
{
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"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
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"version": "6.12.97",
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},
{
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"status": "unaffected",
"version": "6.18.40",
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},
{
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"status": "unaffected",
"version": "7.1.5",
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},
{
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"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"nodes": [
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"vulnerable": true
},
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{
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],
"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": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"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",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-72298",
"date": "2026-09-22",
"epss": "0.0018",
"percentile": "0.0784"
},
"nvd": {
"cve": {
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{
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],
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{
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{
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{
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{
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{
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{
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"versions": [
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"status": "affected",
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},
{
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"status": "unaffected",
"version": "0",
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{
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"status": "unaffected",
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{
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"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
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"versionType": "semver"
},
{
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"version": "6.12.97",
"versionType": "semver"
},
{
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{
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"status": "unaffected",
"version": "7.1.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
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"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."
}
],
"id": "CVE-2026-72298",
"lastModified": "2026-08-17T06:18:32.700",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.5,
"impactScore": 5.9,
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary"
}
]
},
"published": "2026-08-15T06:22:02.437",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-09-17T14:43:33+00:00",
"cve": "CVE-2026-72298",
"id": "CVE-2026-72298",
"initial_release_date": "2026-08-15T00:00:00+00:00",
"product_status:fixed": "333",
"product_status:known_affected": "130",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72298.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-19T01:50:12Z",
"cve": "CVE-2026-72298",
"id": "CVE-2026-72298",
"initial_release_date": "2026-09-01T13:30:41Z",
"product_status:known_affected": "228",
"product_status:known_not_affected": "134",
"product_status:recommended": "41",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-72298",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-72298.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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