In the Linux kernel, the following vulnerability has been resolved:
ASoC: core: Fix use-after-free in snd_soc_exit()
KASAN reports a use-after-free:
BUG: KASAN: use-after-free in device_del+0xb5b/0xc60 Read of size 8 at addr ffff888008655050 by task rmmod/387 CPU: 2 PID: 387 Comm: rmmod Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) Call Trace: <TASK> dump_stack_lvl+0x79/0x9a print_report+0x17f/0x47b kasan_report+0xbb/0xf0 device_del+0xb5b/0xc60 platform_device_del.part.0+0x24/0x200 platform_device_unregister+0x2e/0x40 snd_soc_exit+0xa/0x22 [snd_soc_core] __do_sys_delete_module.constprop.0+0x34f/0x5b0 do_syscall_64+0x3a/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd ... </TASK>
It's bacause in snd_soc_init(), snd_soc_util_init() is possble to fail, but its ret is ignored, which makes soc_dummy_dev unregistered twice.
snd_soc_init() snd_soc_util_init() platform_device_register_simple(soc_dummy_dev) platform_driver_register() # fail platform_device_unregister(soc_dummy_dev) platform_driver_register() # success ... snd_soc_exit() snd_soc_util_exit() # soc_dummy_dev will be unregistered for second time
To fix it, handle error and stop snd_soc_init() when util_init() fail. Also clean debugfs when util_init() or driver_register() fail.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.10.157-139.675Upgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-debuginfoUpgrade kernel-livepatch-4.14.301-224.520Upgrade python-perfUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-toolsUpgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfo | May 22, 2025 | May 1, 2025 |
| Debian | — | Upgrade linux | May 5, 2025 | May 1, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 1, 2025 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-oracle-5.15Upgrade linux-gcp-4.15Upgrade linux-aws-5.4Upgrade linux-raspiUpgrade linux-gkeUpgrade linux-azure-4.15Upgrade linux-aws-5.15Upgrade linux-azureUpgrade linux-azure-5.15Upgrade linux-oracle-5.4Upgrade linux-azure-fipsUpgrade linuxUpgrade linux-iotUpgrade linux-aws-hweUpgrade linux-lowlatencyUpgrade linux-nvidia-tegra-5.15Upgrade linux-azure-5.4Upgrade linux-hwe-5.15Upgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-ibmUpgrade linux-gkeopUpgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-azure-fdeUpgrade linux-fipsUpgrade linux-realtimeUpgrade linux-gcp-fipsUpgrade linux-hweUpgrade linux-intel-iot-realtimeUpgrade linux-intel-iotgUpgrade linux-riscv-5.15Upgrade linux-gcp-5.15Upgrade linux-nvidiaUpgrade linux-lowlatency-hwe-5.15Upgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-intel-iotg-5.15Upgrade linux-bluefieldUpgrade linux-kvmUpgrade linux-xilinx-zynqmpUpgrade linux-gcp | May 6, 2025 | May 1, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 1, 2025 |
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