CVE-2022-48947

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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"}, 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"cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*", "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*", "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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 ........@..."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: L2CAP: Corregir desbordamiento de u8 Al seguir enviando paquetes L2CAP_CONF_REQ, chan->num_conf_rsp aumenta varias veces y eventualmente alcanzar\u00e1 el n\u00famero m\u00e1ximo (es decir, 255). Este parche evita esto a\u00f1adiendo una comprobaci\u00f3n de los l\u00edmites con L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Nota: Linux versi\u00f3n 6.1.0-rc2 (x86_64) 0.264594 = Nota: Subsistema Bluetooth versi\u00f3n 2.22 0.264636 @ MGMT Open: btmon (privilegiado) versi\u00f3n 1.22 {0x0001} 0.272191 = Nuevo \u00edndice: 00:00:00:00:00:00 (Principal,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privilegiado) versi\u00f3n 2.22 {0x0002} 13.890741 = Abierto \u00cdndice: 00:00:00:00:00:00 [hci0] 13.900426 (...) > ACL Data RX: Manejar 200 indicadores 0x00 dlen 1033 #32 [hci0] 14.273106 tama\u00f1o de paquete no v\u00e1lido (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ > ACL Data RX: Manejar 200 indicadores 0x00 dlen 1547 #33 [hci0] 14.273561 tama\u00f1o de paquete no v\u00e1lido (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... > ACL Data RX: Manejar 200 indicadores 0x00 dlen 2061 #34 [hci0] 14.274390 tama\u00f1o de paquete no v\u00e1lido (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... > ACL Data RX: Manejar 200 indicadores 0x00 dlen 2061 #35 [hci0] 14.274932 tama\u00f1o de paquete no v\u00e1lido (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Daemon Bluetooth 5.43 14.401828 > ACL Data RX: Manejar 200 indicadores 0x00 dlen 1033 #36 [hci0] 14.275753 tama\u00f1o de paquete no v\u00e1lido (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@..."}], "id": "CVE-2022-48947", "lastModified": "2026-06-17T05:16:41.207", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48947", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-22T13:22:07.757358Z", "version": "2.0.3"}}]}, "published": "2024-10-21T20:15:06.150", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:3138", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-05-22T00:00:00Z"}, {"advisory": "RHSA-2024:2394", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.13.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}, {"advisory": "RHSA-2024:2394", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.13.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-04-30T00:00:00Z"}], "bugzilla": {"description": "kernel: Bluetooth: L2CAP: Fix u8 overflow", "id": "2320770", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2320770"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nBluetooth: L2CAP: Fix u8 overflow\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\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\ninvalid packet size (12 != 1033)\n08 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\ninvalid packet size (14 != 1547)\n0a 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\ninvalid packet size (16 != 2061)\n0c 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\ninvalid packet size (16 != 2061)\n0c 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\ninvalid packet size (12 != 1033)\n08 00 01 00 04 01 04 00 40 00 00 00 ........@..."], "name": "CVE-2022-48947", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-10-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48947\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48947\nhttps://lore.kernel.org/linux-cve-announce/2024102140-CVE-2022-48947-0ab5@gregkh/T"], "statement": "This issue is fixed in RHEL-9.4 and above (including RHEL 8.10)\n~~~\nceae2a8af1e2 (in rhel-9.4, rhel-9.5, rhel-9.6) Bluetooth: L2CAP: Fix u8 overflow\n371b9a14a101 (in rhel-8.10) Bluetooth: L2CAP: Fix u8 overflow\n~~~\nPlease note that while RHEL-9 kernel-rt still appears as affected, it has been fixed in the same RHSA as RHEL-9 kernel. This is because from RHEL-9.3 onwards, the kernel and kernel-rt fixes are bundled together in a single errata.", "threat_severity": "Moderate"}

{}