In the Linux kernel, the following vulnerability has been resolved:
misc/libmasm/module: Fix two use after free in ibmasm_init_one
In ibmasm_init_one, it calls ibmasm_init_remote_input_dev(). Inside ibmasm_init_remote_input_dev, mouse_dev and keybd_dev are allocated by input_allocate_device(), and assigned to sp->remote.mouse_dev and sp->remote.keybd_dev respectively.
In the err_free_devices error branch of ibmasm_init_one, mouse_dev and keybd_dev are freed by input_free_device(), and return error. Then the execution runs into error_send_message error branch of ibmasm_init_one, where ibmasm_free_remote_input_dev(sp) is called to unregister the freed sp->remote.mouse_dev and sp->remote.keybd_dev.
My patch add a "error_init_remote" label to handle the error of ibmasm_init_remote_input_dev(), to avoid the uaf bugs.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 21, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade kernel-toolsUpgrade bpftoolUpgrade kernel-tools-libs | Oct 9, 2024 | May 21, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 21, 2024 |
| Suse | — | Upgrade kernel-develUpgrade kernel-devel-azureUpgrade kernel-obs-buildUpgrade kernel-sourceUpgrade kernel-preempt-develUpgrade kernel-default-extraUpgrade kernel-docsUpgrade kernel-azure-develUpgrade kernel-preemptUpgrade kernel-syms-azureUpgrade kernel-defaultUpgrade kernel-64kb-develUpgrade kernel-zfcpdumpUpgrade kernel-default-baseUpgrade kernel-64kbUpgrade kernel-azure-baseUpgrade kernel-symsUpgrade kernel-default-manUpgrade kernel-source-azureUpgrade kernel-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-macrosUpgrade kernel-default-devel | Aug 9, 2024 | May 21, 2024 |
| Ubuntu | — | Upgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-aws-hweUpgrade linux-oracle-5.4Upgrade linuxUpgrade linux-raspiUpgrade linux-awsUpgrade linux-gcp-fipsUpgrade linux-ibmUpgrade linux-gcp-4.15Upgrade linux-azureUpgrade linux-kvmUpgrade linux-azure-4.15Upgrade linux-hweUpgrade linux-fipsUpgrade linux-hwe-5.4Upgrade linux-aws-fipsUpgrade linux-azure-5.4Upgrade linux-oracleUpgrade linux-azure-fde-5.15Upgrade linux-gkeopUpgrade linux-azure-fipsUpgrade linux-gcp-5.4 | Nov 19, 2024 | May 21, 2024 |
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