{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-48947", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-08-22T01:27:53.624Z", "datePublished": "2024-10-21T20:05:36.491Z", "dateUpdated": "2026-05-11T18:50:13.918Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:50:13.918Z" }, "descriptions": [ { "lang": "en", "value": "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": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/l2cap_core.c" ], "versions": [ { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "49d5867819ab7c744852b45509e8469839c07e0e", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "95f1847a361c7b4bf7d74c06ecb6968455082c1a", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "ad528fde0702903208d0a79d88d5a42ae3fc235b", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "9fdc79b571434af7bc742da40a3405f038b637a7", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "f3fe6817156a2ad4b06f01afab04638a34d7c9a6", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "19a78143961a197de8502f4f29c453b913dc3c29", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "5550bbf709c323194881737fd290c4bada9e6ead", "status": "affected", "versionType": "git" }, { "version": "f2fcfcd670257236ebf2088bbdf26f6a8ef459fe", "lessThan": "bcd70260ef56e0aee8a4fc6cd214a419900b0765", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/bluetooth/l2cap_core.c" ], "versions": [ { "version": "2.6.32", "status": "affected" }, { "version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.161", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.85", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.15", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1", "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": "2.6.32", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.10.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.85" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.0.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e" }, { "url": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a" }, { "url": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b" }, { "url": "https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7" }, { "url": "https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6" }, { "url": "https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29" }, { "url": "https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead" }, { "url": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765" } ], "title": "Bluetooth: L2CAP: Fix u8 overflow", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2022-48947", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-10-22T13:22:07.757358Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-10-22T13:28:41.276Z" } } ] } }