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 kernelUpgrade kernel-develUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade kernel-livepatch-4.14.304-226.531Upgrade perfUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64 | 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 | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 9, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-realtimeUpgrade linux-aws-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-fdeUpgrade linux-gcp-5.15Upgrade linux-iotUpgrade linux-gcp-4.15Upgrade linux-azure-4.15Upgrade linux-hweUpgrade linux-lts-xenialUpgrade linux-gcpUpgrade linux-azure-5.4Upgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-gcp-fipsUpgrade linux-awsUpgrade linux-fipsUpgrade linux-hwe-5.4Upgrade linux-hwe-5.15Upgrade linux-gkeopUpgrade linux-nvidiaUpgrade linux-lowlatencyUpgrade linux-intel-iotgUpgrade linux-aws-fipsUpgrade linux-azure-fde-5.15Upgrade linux-oracle-5.15Upgrade linux-aws-5.4Upgrade linux-gkeop-5.15Upgrade linux-azure-5.15Upgrade linux-oracle-5.4Upgrade linux-gcp-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-intel-iotg-5.15Upgrade linuxUpgrade linux-ibm-5.4Upgrade linux-azure-fipsUpgrade linux-ibmUpgrade linux-aws-hweUpgrade linux-gkeUpgrade linux-kvmUpgrade linux-azureUpgrade linux-oracleUpgrade linux-riscv-5.15Upgrade linux-raspi | 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