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-toolsUpgrade perf-debuginfoUpgrade kernel-livepatch-4.14.304-226.531Upgrade perfUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-devel | 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-ibmUpgrade linuxUpgrade linux-gkeUpgrade linux-intel-iotgUpgrade linux-oracle-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-gkeop-5.15Upgrade linux-azure-fde-5.15Upgrade linux-oracle-5.15Upgrade linux-azure-5.15Upgrade linux-aws-hweUpgrade linux-xilinx-zynqmpUpgrade linux-hwe-5.4Upgrade linux-azure-fipsUpgrade linux-fipsUpgrade linux-kvmUpgrade linux-gkeopUpgrade linux-aws-5.4Upgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-lowlatencyUpgrade linux-nvidiaUpgrade linux-raspiUpgrade linux-gcp-5.4Upgrade linux-azureUpgrade linux-riscv-5.15Upgrade linux-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-bluefieldUpgrade linux-gcp-4.15Upgrade linux-gcp-5.15Upgrade linux-iotUpgrade linux-gcpUpgrade linux-realtimeUpgrade linux-raspi-5.4Upgrade linux-lts-xenialUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-4.15Upgrade linux-awsUpgrade linux-azure-5.4Upgrade linux-hweUpgrade linux-azure-fdeUpgrade linux-aws-5.15Upgrade linux-gcp-fips | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub