HighFix available
net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.261, 5.15.212, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-72298
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 14:09 UTC · Revision 1
Source evidence
net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()
core-osv · Original sourcePublished 15 Aug 2026, 05:55 UTC
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.
osv:CVE-2026-72298
Kernel
Fixed versions: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
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"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.",
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}
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},
{
"type": "ECOSYSTEM",
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},
{
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{
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{
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}
]
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72298.json"
}
}
],
"modified": "2026-10-28T02:30:35.927018648Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191",
"https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec",
"https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a",
"https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04",
"https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb",
"https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b",
"https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f",
"https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72298.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-72298",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72298.json"
}
},
"related_cves": [
{
"value": "CVE-2026-72298",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 503457,
"published_at": "2026-08-15T05:55:18.529+00:00"
}