{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-48947", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-48947", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2024-10-21T20:05:36.491Z", "updatedAt": "2026-05-11T18:50:13.918Z", "importedAt": "2026-10-24T01:56:45.230Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Bluetooth: L2CAP: Fix u8 overflow", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix u8 overflow\n\nBy keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases\nmultiple times and eventually it will wrap around the maximum number\n(i.e., 255).\nThis patch prevents this by adding a boundary check with\nL2CAP_MAX_CONF_RSP\n\nBtmon log:\nBluetooth monitor ver 5.64\n= Note: Linux version 6.1.0-rc2 (x86_64) 0.264594\n= Note: Bluetooth subsystem version 2.22 0.264636\n@ MGMT Open: btmon (privileged) version 1.22 {0x0001} 0.272191\n= New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0) [hci0] 13.877604\n@ RAW Open: 9496 (privileged) version 2.22 {0x0002} 13.890741\n= Open Index: 00:00:00:00:00:00 [hci0] 13.900426\n(...)\n> ACL Data RX: Handle 200 flags 0x00 dlen 1033 #32 [hci0] 14.273106\n invalid packet size (12 != 1033)\n 08 00 01 00 02 01 04 00 01 10 ff ff ............\n> ACL Data RX: Handle 200 flags 0x00 dlen 1547 #33 [hci0] 14.273561\n invalid packet size (14 != 1547)\n 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@.....\n> ACL Data RX: Handle 200 flags 0x00 dlen 2061 #34 [hci0] 14.274390\n invalid packet size (16 != 2061)\n 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@.......\n> ACL Data RX: Handle 200 flags 0x00 dlen 2061 #35 [hci0] 14.274932\n invalid packet size (16 != 2061)\n 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@.......\n= bluetoothd: Bluetooth daemon 5.43 14.401828\n> ACL Data RX: Handle 200 flags 0x00 dlen 1033 #36 [hci0] 14.275753\n invalid packet size (12 != 1033)\n 08 00 01 00 04 01 04 00 40 00 00 00 ........@...", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "49d5867819ab7c744852b45509e8469839c07e0e" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "95f1847a361c7b4bf7d74c06ecb6968455082c1a" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "ad528fde0702903208d0a79d88d5a42ae3fc235b" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "9fdc79b571434af7bc742da40a3405f038b637a7" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "f3fe6817156a2ad4b06f01afab04638a34d7c9a6" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "19a78143961a197de8502f4f29c453b913dc3c29" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "5550bbf709c323194881737fd290c4bada9e6ead" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "status": "affected", "versionType": "git", "lessThan": "bcd70260ef56e0aee8a4fc6cd214a419900b0765" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.32", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.32" }, { "version": "4.9.337", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.9.*" }, { "version": "4.14.303", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.270", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.229", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.161", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.85", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.0.15", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.0.*" }, { "version": "6.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }