cbcvebase.
CVE-2024-38605
published 2024-06-19

CVE-2024-38605: In the Linux kernel, the following vulnerability has been resolved: ALSA: core: Fix NULL module pointer assignment at card init The commit 81033c6b584b ("ALSA…

PriorityP352high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
1.09%
61.9th percentile
In the Linux kernel, the following vulnerability has been resolved: ALSA: core: Fix NULL module pointer assignment at card init The commit 81033c6b584b ("ALSA: core: Warn on empty module") introduced a WARN_ON() for a NULL module pointer passed at snd_card object creation, and it also wraps the code around it with '#ifdef MODULE'. This works in most cases, but the devils are always in details. "MODULE" is defined when the target code (i.e. the sound core) is built as a module; but this doesn't mean that the caller is also built-in or not. Namely, when only the sound core is built-in (CONFIG_SND=y) while the driver is a module (CONFIG_SND_USB_AUDIO=m), the passed module pointer is ignored even if it's non-NULL, and card->module remains as NULL. This would result in the missing module reference up/down at the device open/close, leading to a race with the code execution after the module removal. For addressing the bug, move the assignment of card->module again out of ifdef. The WARN_ON() is still wrapped with ifdef because the module can be really NULL when all sound drivers are built-in. Note that we keep 'ifdef MODULE' for WARN_ON(), otherwise it would lead to a false-positive NULL module check. Admittedly it won't catch perfectly, i.e. no check is performed when CONFIG_SND=y. But, it's no real problem as it's only for debugging, and the condition is pretty rare.

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.94-1 (bookworm)linux 6.1.94-1 (bookworm)
linuxlinux
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < d7ff29a429b56f04783152ad7bbd7233b740e434d7ff29a429b56f04783152ad7bbd7233b740e434
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < e7e0ca200772bdb2fdc6d43d32d341e87a36f811e7e0ca200772bdb2fdc6d43d32d341e87a36f811
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < e007476725730c1a68387b54b7629486d8a8301ee007476725730c1a68387b54b7629486d8a8301e
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < e644036a3e2b2c9b3eee3c61b5d31c2ca8b5ba92e644036a3e2b2c9b3eee3c61b5d31c2ca8b5ba92
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < c935e72139e6d523defd60fe875c01eb1f9ea5c5c935e72139e6d523defd60fe875c01eb1f9ea5c5
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < 6b8374ee2cabcf034faa34e69a855dc496a9ec126b8374ee2cabcf034faa34e69a855dc496a9ec12
linuxlinux>= 81033c6b584b44514cbb16fffc26ca29a0fa6270 < 39381fe7394e5eafac76e7e9367e7351138a29c139381fe7394e5eafac76e7e9367e7351138a29c1
linuxlinux_kernel>= 0 < 5.10.221-15.10.221-1
linuxlinux_kernel>= 0 < 6.1.94-16.1.94-1
linuxlinux_kernel>= 0 < 6.8.12-16.8.12-1
linuxlinux_kernel>= 0 < 6.8.12-16.8.12-1
linuxlinux_kernel>= 0 < 5.15.0-121.1315.15.0-121.131
linuxlinux_kernel>= 0 < 6.8.0-40.406.8.0-40.40
linuxlinux_kernel>= 5.11 < 5.15.1615.15.161
linuxlinux_kernel>= 5.16 < 6.1.936.1.93
linuxlinux_kernel>= 5.9 < 5.10.2195.10.219
linuxlinux_kernel>= 6.2 < 6.6.336.6.33
linuxlinux_kernel>= 6.7 < 6.8.126.8.12
linuxlinux_kernel>= 6.9 < 6.9.36.9.3

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu6.5MEDIUM
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