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In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc
A NULL sock pointer is passed into l2cap_sock_alloc() when it is called from l2cap_sock_new_connection_cb() and the error handling paths should also be aware of it.
Seemingly a more elegant solution would be to swap bt_sock_alloc() and l2cap_chan_create() calls since they are not interdependent to that moment but then l2cap_chan_create() adds the soon to be deallocated and still dummy-initialized channel to the global list accessible by many L2CAP paths. The channel would be removed from the list in short period of time but be a bit more straight-forward here and just check for NULL instead of changing the order of function calls.
Found by Linux Verification Center (linuxtesting.org) with SVACE static analysis tool.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Mar 17, 2025 | Feb 27, 2025 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | May 20, 2025 | Feb 27, 2025 |
| Ubuntu | — | Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-lowlatencyUpgrade linux-image-gcpUpgrade linux-image-5.4.0-1105-bluefieldUpgrade linux-image-oem-osp1Upgrade linux-image-genericUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-xilinx-zynqmpUpgrade linux-image-5.4.0-1151-azure-fipsUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-5.4.0-1146-awsUpgrade linux-image-raspi2Upgrade linux-image-5.4.0-1151-azureUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-virtualUpgrade linux-image-5.4.0-1149-gcp-fipsUpgrade linux-image-fipsUpgrade linux-image-oemUpgrade linux-image-aws-fipsUpgrade linux-image-5.4.0-216-lowlatencyUpgrade linux-image-aws-lts-20.04Upgrade linux-image-azureUpgrade linux-image-5.4.0-1146-aws-fipsUpgrade linux-image-5.4.0-1051-iotUpgrade linux-image-raspiUpgrade linux-image-ibmUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-azure-fipsUpgrade linux-image-kvmUpgrade linux-image-awsUpgrade linux-image-5.4.0-1092-ibmUpgrade linux-image-5.4.0-1149-gcpUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-5.4.0-1133-kvmUpgrade linux-image-oracleUpgrade linux-image-bluefieldUpgrade linux-image-5.4.0-1129-raspiUpgrade linux-image-5.4.0-1064-xilinx-zynqmpUpgrade linux-image-5.4.0-1144-oracleUpgrade linux-image-azure-lts-20.04Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-5.4.0-216-genericUpgrade linux-image-generic-lpaeUpgrade linux-image-gcp-fipsUpgrade linux-image-5.4.0-216-generic-lpaeUpgrade linux-image-5.4.0-1120-fips | May 20, 2025 | Feb 27, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 27, 2025 |
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