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vuln-cve/data/2026/64xxx/CVE-2026-64573.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-64573",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-07-19T15:36:31.797Z",
"datePublished": "2026-08-05T08:08:09.669Z",
"dateUpdated": "2026-08-19T16:28:52.002Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-08-19T16:28:52.002Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: qca: fix NVM tag length underflow in TLV parser\n\nIn the TLV_TYPE_NVM branch of qca_tlv_check_data() the tag loop bound is\n\"while (idx < length - sizeof(struct tlv_type_nvm))\". \"length\" is a signed\nint from the firmware TLV header and sizeof(struct tlv_type_nvm) is a\nsize_t (12), so \"length\" is converted to size_t and any firmware-supplied\n\"length\" < 12 makes the subtraction wrap to a huge value. The loop body\nthen reads a 12-byte struct tlv_type_nvm past the end of the short\nvmalloc'd firmware buffer (and the EDL_TAG_ID_* handlers can write past it).\n\nRewrite the bound as \"idx + sizeof(struct tlv_type_nvm) <= length\"; both\noperands are non-negative, so it no longer underflows and a \"length\" too\nsmall for one record correctly skips the loop.\n\n BUG: KASAN: vmalloc-out-of-bounds in qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421)\n Read of size 2 at addr ffffc900000e5004 by task kworker/u9:0/52\n Workqueue: hci0 hci_power_on\n Call Trace:\n ...\n kasan_report (mm/kasan/report.c:595)\n qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421 drivers/bluetooth/btqca.c:617)\n qca_uart_setup (drivers/bluetooth/btqca.c:948)\n qca_setup (drivers/bluetooth/hci_qca.c:2029)\n hci_uart_setup (drivers/bluetooth/hci_ldisc.c:438)\n hci_dev_open_sync (net/bluetooth/hci_sync.c:5227)\n hci_power_on (net/bluetooth/hci_core.c:920)\n process_one_work (kernel/workqueue.c:3322)\n worker_thread (kernel/workqueue.c:3486)\n kthread (kernel/kthread.c:436)\n ret_from_fork (arch/x86/kernel/process.c:158)\n ret_from_fork_asm (arch/x86/entry/entry_64.S:245)"
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/bluetooth/btqca.c"
],
"versions": [
{
"version": "ed53949cc92e28aaa3463d246942bda1fbb7f307",
"lessThan": "a7ee11441d71ab036a705d110a415421f5a4a898",
"status": "affected",
"versionType": "git"
},
{
"version": "1caceadfb50432dbf6d808796cb6c34ebb6d662c",
"lessThan": "5d34e537755d2f9eba2d4e54d70126f987ef20b4",
"status": "affected",
"versionType": "git"
},
{
"version": "427281f9498ed614f9aabc80e46ec077c487da6d",
"lessThan": "70354dbb5f72d9a76da7b031de3cbaf6c7d8fc24",
"status": "affected",
"versionType": "git"
},
{
"version": "2e4edfa1e2bd821a317e7d006517dcf2f3fac68d",
"lessThan": "59fd2f075bca94f030c7c78e94878ea0803d7690",
"status": "affected",
"versionType": "git"
},
{
"version": "2e4edfa1e2bd821a317e7d006517dcf2f3fac68d",
"lessThan": "a087ed960fce54e9302796229e9d545bbc9bcd4a",
"status": "affected",
"versionType": "git"
},
{
"version": "2e4edfa1e2bd821a317e7d006517dcf2f3fac68d",
"lessThan": "4fcfb5b2c736785464ff9745f94c6726c5ee2d85",
"status": "affected",
"versionType": "git"
},
{
"version": "2e4edfa1e2bd821a317e7d006517dcf2f3fac68d",
"lessThan": "c90164ca0f7036942ba088eb7ea8d3f6c2352020",
"status": "affected",
"versionType": "git"
},
{
"version": "02f05ed44b71152d5e11d29be28aed91c0489b4e",
"status": "affected",
"versionType": "git"
},
{
"version": "5.15.159",
"lessThan": "5.15.216",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.1.91",
"lessThan": "6.1.183",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.6.31",
"lessThan": "6.6.148",
"status": "affected",
"versionType": "semver"
},
{
"version": "6.8.10",
"lessThan": "6.9",
"status": "affected",
"versionType": "semver"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/bluetooth/btqca.c"
],
"versions": [
{
"version": "6.9",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.9",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.15.216",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.183",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.148",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.101",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.42",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.6",
"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": "5.15.159",
"versionEndExcluding": "5.15.216"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.1.91",
"versionEndExcluding": "6.1.183"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.31",
"versionEndExcluding": "6.6.148"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "6.12.101"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "6.18.42"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.1.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.9",
"versionEndExcluding": "7.2"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.8.10"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/a7ee11441d71ab036a705d110a415421f5a4a898"
},
{
"url": "https://git.kernel.org/stable/c/5d34e537755d2f9eba2d4e54d70126f987ef20b4"
},
{
"url": "https://git.kernel.org/stable/c/70354dbb5f72d9a76da7b031de3cbaf6c7d8fc24"
},
{
"url": "https://git.kernel.org/stable/c/59fd2f075bca94f030c7c78e94878ea0803d7690"
},
{
"url": "https://git.kernel.org/stable/c/a087ed960fce54e9302796229e9d545bbc9bcd4a"
},
{
"url": "https://git.kernel.org/stable/c/4fcfb5b2c736785464ff9745f94c6726c5ee2d85"
},
{
"url": "https://git.kernel.org/stable/c/c90164ca0f7036942ba088eb7ea8d3f6c2352020"
}
],
"title": "Bluetooth: qca: fix NVM tag length underflow in TLV parser",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}
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