{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72298", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.917Z", "datePublished": "2026-08-15T05:55:18.529Z", "dateUpdated": "2026-08-17T05:42:31.352Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:31.352Z" }, "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 >= 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": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - qrtr_endpoint_post() is only reachable via local injection paths—write()/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>=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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/qrtr/af_qrtr.c" ], "versions": [ { "version": "960b08dd36de1e341e3eb43d1c547513e338f4f8", "lessThan": "3665e644ea081c4624a1637023b0de3b29f4ae04", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "b609f7f46916c6b05585ca82455077198a23770f", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "242408b5b763c01288adf3113cbce84378a76e1a", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "d0597074e99731fdad5593e4f6d056a3866f2cab", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "689b7267f8632b4661879dc323e26ebb60978afb", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "22100a8f73d4ae4f17697dae93d4e2e1d283a6ec", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "7f72c285f6d3bf63968a0344beee8ab1b370198b", "status": "affected", "versionType": "git" }, { "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d", "lessThan": "20054869770c7df060c5ecee3e8bbf9029c47191", "status": "affected", "versionType": "git" }, { "version": "f8111c0d7ed42ede41a3d0d393b104de0730a8a6", "status": "affected", "versionType": "git" }, { "version": "26b8d10703a9be45d6097946b2b4011f7dd2c56f", "status": "affected", "versionType": "git" }, { "version": "19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe", "status": "affected", "versionType": "git" }, { "version": "5.10.46", "lessThan": "5.10.261", "status": "affected", "versionType": "semver" }, { "version": "4.19.196", "lessThan": "4.20", "status": "affected", "versionType": "semver" }, { "version": "5.4.128", "lessThan": "5.5", "status": "affected", "versionType": "semver" }, { "version": "5.12.13", "lessThan": "5.13", "status": "affected", "versionType": "semver" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/qrtr/af_qrtr.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10.46", "versionEndExcluding": "5.10.261" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "5.15.212" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "7.2" }, { "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" } ] } ] } ], "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" } } } }