{"id":"CVE-2026-64549","title":"Bluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup()\n\nbpa10x_setup() sends the vendor command 0xfc0e and passes the response\nto bt_dev_info() and hci_…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 1813add71e386f77b3040e6c8dc9b7b3ff965a6c","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < bd56c23f1f8681a2857ee924a8bd3abf87c8913b","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 7a64f39ebe1bacd9004a62eceadac0b122ec3cc2","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < f80b4afe893dffa9fabdbf80fb4d6782b24a6793","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 4b4008dda1d0c6e598d7865631ad4eda63a560f0","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < bfc9e7be289df11e8e38c98cd78019d67fdd0bd5","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < a8e169d308775039200bb9c905c7ce420db6e8c5","Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < dd068ef044128db655f48323a4acfd5907e04903","Linux 4.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:41:21.173281Z"},"published":"2026-07-27","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:44:56.977Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64549","references":[{"url":"https://git.kernel.org/stable/c/1813add71e386f77b3040e6c8dc9b7b3ff965a6c"},{"url":"https://git.kernel.org/stable/c/bd56c23f1f8681a2857ee924a8bd3abf87c8913b"},{"url":"https://git.kernel.org/stable/c/7a64f39ebe1bacd9004a62eceadac0b122ec3cc2"},{"url":"https://git.kernel.org/stable/c/f80b4afe893dffa9fabdbf80fb4d6782b24a6793"},{"url":"https://git.kernel.org/stable/c/4b4008dda1d0c6e598d7865631ad4eda63a560f0"},{"url":"https://git.kernel.org/stable/c/bfc9e7be289df11e8e38c98cd78019d67fdd0bd5"},{"url":"https://git.kernel.org/stable/c/a8e169d308775039200bb9c905c7ce420db6e8c5"},{"url":"https://git.kernel.org/stable/c/dd068ef044128db655f48323a4acfd5907e04903"}],"tags":["cve.org"],"epss":0.00187,"epssPercentile":0.08371,"ingestedAt":"2026-11-06T16:57:43.153Z","slug":"CVE-2026-64549","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: bpa10x: avoid OOB read of revision string in bpa10x_setup()\n\nbpa10x_setup() sends the vendor command 0xfc0e and passes the response\nto bt_dev_info() and hci_set_fw_info() as a \"%s\" string starting at\nskb->data + 1, without checking the length:\n\n\tbt_dev_info(hdev, \"%s\", (char *)(skb->data + 1));\n\thci_set_fw_info(hdev, \"%s\", skb->data + 1);\n\nA device that returns a one-byte response (status only) leaves\nskb->data + 1 past the end of the data, and the %s walk reads adjacent\nslab memory until it meets a NUL. The same happens when the payload is\nnot NUL-terminated within skb->len. The out-of-bounds bytes end up in\nthe kernel log and the firmware-info debugfs file.\n\nPrint the revision string with a bounded \"%.*s\" limited to skb->len - 1\ninstead. This keeps the string readable for well-behaved devices while\nnever reading past the received data, and does not fail setup, so a\ndevice returning a short or unterminated response keeps working.\n\n## Affected\n\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 1813add71e386f77b3040e6c8dc9b7b3ff965a6c`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < bd56c23f1f8681a2857ee924a8bd3abf87c8913b`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 7a64f39ebe1bacd9004a62eceadac0b122ec3cc2`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < f80b4afe893dffa9fabdbf80fb4d6782b24a6793`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < 4b4008dda1d0c6e598d7865631ad4eda63a560f0`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < bfc9e7be289df11e8e38c98cd78019d67fdd0bd5`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < a8e169d308775039200bb9c905c7ce420db6e8c5`\n- `Linux >= ddd68ec8f4847b460c9f580076eafe13b031a6fd < dd068ef044128db655f48323a4acfd5907e04903`\n- `Linux 4.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}