{ "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" } } } }