cbcvebase.
CVE-2022-49842
published 2025-05-01

CVE-2022-49842: 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…

PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.20%
9.7th percentile
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: 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 ... 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.

Affected

22 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.10-1 (bookworm)linux 6.0.10-1 (bookworm)
linuxlinux——
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 41fad4f712e081acdfde8b59847f9f66eaf407a041fad4f712e081acdfde8b59847f9f66eaf407a0
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 90bbdf30a51e42378cb23a312005a022794b8e1e90bbdf30a51e42378cb23a312005a022794b8e1e
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < a3365e62239dc064019a244bde5686ac18527c22a3365e62239dc064019a244bde5686ac18527c22
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 2ec3f558db343b045a7c7419cdbaec266b8ac1a72ec3f558db343b045a7c7419cdbaec266b8ac1a7
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 8d21554ec7680e9585fb852d933203c3db60dad18d21554ec7680e9585fb852d933203c3db60dad1
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 34eee4189bcebbd5f6a2ff25ef0cb893ad33d51e34eee4189bcebbd5f6a2ff25ef0cb893ad33d51e
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < c5674bd073c0fd9f620ca550c5ff08d0d429bdd9c5674bd073c0fd9f620ca550c5ff08d0d429bdd9
linuxlinux>= fb257897bf20c5f0e1df584bb5b874e811651263 < 6ec27c53886c8963729885bcf2dd996eba2767a76ec27c53886c8963729885bcf2dd996eba2767a7
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 5.10.158-15.10.158-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 3.0 < 4.9.3344.9.334
linuxlinux_kernel>= 4.10 < 4.14.3004.14.300
linuxlinux_kernel>= 4.15 < 4.19.2674.19.267
linuxlinux_kernel>= 4.20 < 5.4.2255.4.225
linuxlinux_kernel>= 5.11 < 5.15.805.15.80
linuxlinux_kernel>= 5.16 < 6.0.106.0.10
linuxlinux_kernel>= 5.5 < 5.10.1565.10.156

CVSS provenance

nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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