CVE - CVE-2022-48947

CVE-ID
CVE-2022-48947	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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 ........@...
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29 URL:https://git.kernel.org/stable/c/19a78143961a197de8502f4f29c453b913dc3c29 MISC:https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e URL:https://git.kernel.org/stable/c/49d5867819ab7c744852b45509e8469839c07e0e MISC:https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead URL:https://git.kernel.org/stable/c/5550bbf709c323194881737fd290c4bada9e6ead MISC:https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a URL:https://git.kernel.org/stable/c/95f1847a361c7b4bf7d74c06ecb6968455082c1a MISC:https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7 URL:https://git.kernel.org/stable/c/9fdc79b571434af7bc742da40a3405f038b637a7 MISC:https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b URL:https://git.kernel.org/stable/c/ad528fde0702903208d0a79d88d5a42ae3fc235b MISC:https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765 URL:https://git.kernel.org/stable/c/bcd70260ef56e0aee8a4fc6cd214a419900b0765 MISC:https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6 URL:https://git.kernel.org/stable/c/f3fe6817156a2ad4b06f01afab04638a34d7c9a6
Assigning CNA
kernel.org
Date Record Created
20240822	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240822)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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