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 Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-aarch64Upgrade perf-debuginfoUpgrade python-perfUpgrade kernel-livepatch-4.14.304-226.531Upgrade perfUpgrade kernel-toolsUpgrade kernelUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-develUpgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo | Mar 14, 2025 | Oct 21, 2024 |
| Debian | — | Upgrade linux | Oct 23, 2024 | Oct 23, 2024 |
| Dell Powerstore Dsa2025223 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | May 27, 2025 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | Jul 9, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-gkeop-5.15Upgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.15Upgrade linux-intel-iotgUpgrade linux-gcp-5.4Upgrade linuxUpgrade linux-oracle-5.4Upgrade linux-riscv-5.15Upgrade linux-fipsUpgrade linux-lowlatencyUpgrade linux-ibmUpgrade linux-nvidiaUpgrade linux-oracleUpgrade linux-kvmUpgrade linux-azure-fipsUpgrade linux-azureUpgrade linux-aws-5.4Upgrade linux-gkeopUpgrade linux-ibm-5.4Upgrade linux-raspiUpgrade linux-oracle-5.15Upgrade linux-gkeUpgrade linux-aws-hweUpgrade linux-azure-5.15Upgrade linux-azure-fde-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-lts-xenialUpgrade linux-gcp-fipsUpgrade linux-raspi-5.4Upgrade linux-gcpUpgrade linux-realtimeUpgrade linux-gcp-5.15Upgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linux-azure-fdeUpgrade linux-hweUpgrade linux-iotUpgrade linux-azure-5.4Upgrade linux-awsUpgrade linux-aws-5.15 | Nov 19, 2024 | Oct 21, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Oct 21, 2024 |
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