Bug 2148510 (CVE-2022-45884) - CVE-2022-45884 kernel: use-after-free due to race condition occurring in dvb_register_device()
Summary: CVE-2022-45884 kernel: use-after-free due to race condition occurring in dvb_...
Keywords:
Status: NEW
Alias: CVE-2022-45884
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2148511 2153541 2153542 2153543 2153544
Blocks: 2150349
TreeView+ depends on / blocked
 
Reported: 2022-11-25 17:36 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-04-01 08:44 UTC (History)
35 users (show)

Fixed In Version:
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A race condition flaw leading to a use-after-free issue was found in the Linux kernel media subsystem in the DVB core device driver. It could occur in the dvb_register_device() function due to the file_operations structure (fops) being dynamically allocated and later kfreed. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.
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Last Closed:

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Description Guilherme de Almeida Suckevicz 2022-11-25 17:36:17 UTC 
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/dvb-core/dvbdev.c has a use-after-free, related to dvb_register_device dynamically allocating fops.

References:
https://lore.kernel.org/linux-media/20221115131822.6640-4-imv4bel@gmail.com/
https://lore.kernel.org/linux-media/20221115131822.6640-1-imv4bel@gmail.com/
Comment 1 Guilherme de Almeida Suckevicz 2022-11-25 17:36:42 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2148511]
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