{"id":"DEBIAN-CVE-2022-48947","details":"In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: L2CAP: Fix u8 overflow  By keep sending L2CAP_CONF_REQ packets, chan-\u003enum_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 (...) \u003e 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              ............ \u003e 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        ........@..... \u003e 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  ........@....... \u003e 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 \u003e 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              ........@...","modified":"2026-09-01T16:05:29.545704948Z","published":"2024-10-21T20:15:06.150Z","upstream":["CVE-2022-48947"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-48947"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48947.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48947.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-48947.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}