In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp
If dcid is received for an already-assigned destination CID the spec requires that both channels to be discarded, but calling l2cap_chan_del may invalidate the tmp cursor created by list_for_each_entry_safe and in fact it is the wrong procedure as the chan->dcid may be assigned previously it really needs to be disconnected.
Calling l2cap_chan_clone directly may still lead to l2cap_chan_del so instead schedule l2cap_chan_timeout with delay 0 to close the channel asynchronously.
CVSS Details
- CVSS 3.1 Base Score: 8.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 20, 2026 | Jul 20, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 23, 2026 | Jul 19, 2026 |
| Rocky_linux | — | Upgrade kernel-develUpgrade kernel-rt-develUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-coreUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-debug-modules-extraUpgrade rtlaUpgrade kernel-rt-debugUpgrade kernel-rt-debug-modulesUpgrade kernel-tools-debuginfoUpgrade kernel-debug-develUpgrade kernel-uki-virtUpgrade kernel-debug-uki-virtUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-rt-coreUpgrade kernel-modules-extraUpgrade kernel-rt-debug-modules-coreUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-modulesUpgrade python3-perf-debuginfoUpgrade perfUpgrade python3-perfUpgrade kernel-zfcpdump-modules-coreUpgrade rvUpgrade kernel-rt-modulesUpgrade kernel-modules-extra-matchedUpgrade kernel-toolsUpgrade libperf-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel-debug-modules-extraUpgrade kernel-debug-modules-coreUpgrade kernel-debug-modulesUpgrade kernel-zfcpdump-modulesUpgrade kernel-rtUpgrade kernel-modules-coreUpgrade kernel-tools-libsUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debuginfoUpgrade kernelUpgrade libperfUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-debug-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modules-coreUpgrade kernel-devel-matchedUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-tools-libs-develUpgrade kernel-rt-modules-extraUpgrade kernel-debuginfo-common-s390xUpgrade kernel-debug-devel-matchedUpgrade kernel-debug-debuginfo | Sep 15, 2026 | Sep 10, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-bosUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-azure-fde-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-raspi-7.0Upgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-raspiUpgrade linux-image-awsUpgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-azureUpgrade linux-image-nvidia-tegra-rtUpgrade linux-image-azure-7.0Upgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-gcp-64kUpgrade linux-image-ibmUpgrade linux-image-nvidia-7.0Upgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-nvidia-tegraUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-aws-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-oracleUpgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-gcpUpgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-gcp-7.0Upgrade linux-image-raspi-realtime-7.0Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-nvidiaUpgrade linux-image-ibm-7.0Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-7.0.0-1010-azureUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-nvidia-tegra-rt-6.8Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-oracle-64kUpgrade linux-image-aws-64k | Jul 21, 2026 | Jul 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Jul 19, 2026 |
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