CVE-2022-48947

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix u8 overflow By keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases multiple times and eventually it will wrap around the maximum number (i.e., 255). This patch prevents this by adding a boundary check with L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Note: Linux version 6.1.0-rc2 (x86_64) 0.264594 = Note: Bluetooth subsystem version 2.22 0.264636 @ MGMT Open: btmon (privileged) version 1.22 {0x0001} 0.272191 = New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privileged) version 2.22 {0x0002} 13.890741 = Open Index: 00:00:00:00:00:00 [hci0] 13.900426 (...) > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #32 [hci0] 14.273106 invalid packet size (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ > ACL Data RX: Handle 200 flags 0x00 dlen 1547 #33 [hci0] 14.273561 invalid packet size (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #34 [hci0] 14.274390 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #35 [hci0] 14.274932 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Bluetooth daemon 5.43 14.401828 > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #36 [hci0] 14.275753 invalid packet size (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@...

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29	Patch
https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e	Patch
https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead	Patch
https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a	Patch
https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7	Patch
https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b	Patch
https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765	Patch
https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc6::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc7::::::
	cpe:2.3:o:linux:linux_kernel:6.1:rc8::::::

History

25 Oct 2024, 20:11

Type	Values Removed	Values Added
CWE		CWE-190
First Time		Linux linux Kernel Linux
References	~~() https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29 -~~	() https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29 - Patch
References	~~() https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e -~~	() https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e - Patch
References	~~() https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead -~~	() https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead - Patch
References	~~() https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a -~~	() https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a - Patch
References	~~() https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7 -~~	() https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7 - Patch
References	~~() https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b -~~	() https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b - Patch
References	~~() https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765 -~~	() https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765 - Patch
References	~~() https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6 -~~	() https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:o:linux:linux_kernel:6.1:rc7:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc3:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc5:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc8:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:6.1:rc6:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc2:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc1:::::: cpe:2.3:o:linux:linux_kernel:6.1:rc4::::::

23 Oct 2024, 15:13

Type	Values Removed	Values Added
Summary		(es) 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 alcanzará el número máximo (es decir, 255). Este parche evita esto añadiendo una comprobación de los límites con L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Nota: Linux versión 6.1.0-rc2 (x86_64) 0.264594 = Nota: Subsistema Bluetooth versión 2.22 0.264636 @ MGMT Open: btmon (privilegiado) versión 1.22 {0x0001} 0.272191 = Nuevo índice: 00:00:00:00:00:00 (Principal,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privilegiado) versión 2.22 {0x0002} 13.890741 = Abierto Índice: 00:00:00:00:00:00 [hci0] 13.900426 (...) > ACL Data RX: Manejar 200 indicadores 0x00 dlen 1033 #32 [hci0] 14.273106 tamaño de paquete no válido (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 tamaño de paquete no válido (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 tamaño de paquete no válido (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 tamaño de paquete no válido (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 tamaño de paquete no válido (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@...

21 Oct 2024, 20:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-10-21 20:15

Updated : 2024-10-25 20:11

NVD link : CVE-2022-48947

Mitre link : CVE-2022-48947

CVE.ORG link : CVE-2022-48947

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-190

Integer Overflow or Wraparound

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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 ........@..."}], "lastModified": "2024-10-25T20:11:45.473", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9FFBA9B5-26DC-4802-9A86-F7B886954E4A", "versionEndExcluding": "4.9.337"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1E7450AD-4739-46F0-B81B-C02E7B35A97B", "versionEndExcluding": "4.14.303", "versionStartIncluding": "4.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AE8904A3-99BE-4E49-9682-1F90A6373F4F", "versionEndExcluding": "4.19.270", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A0C0D95E-414A-445E-941B-3EF6A4D3A093", "versionEndExcluding": "5.4.229", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6CD83369-DB79-46EF-B731-E327A63A4E1B", "versionEndExcluding": "5.10.161", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0D49B1E-E996-4A13-9C5C-23C64BBD0E0F", "versionEndExcluding": "5.15.85", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3E66ABBB-C60E-481F-88C6-ED81661DFC31", "versionEndExcluding": "6.0.15", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}

5.5 /10