Bug 2148520 (CVE-2022-45887) - CVE-2022-45887 kernel: memory leak in ttusb_dec_exit_dvb() in media/usb/ttusb-dec/ttusb_dec.c
Summary: CVE-2022-45887 kernel: memory leak in ttusb_dec_exit_dvb() in media/usb/ttusb...
Keywords:
Status: NEW
Alias: CVE-2022-45887
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
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Depends On: 2148521 2153575 2153577 2153576 2153578 2153579 2153580
Blocks: 2150349
TreeView+ depends on / blocked
 
Reported: 2022-11-25 17:48 UTC by Guilherme de Almeida Suckevicz
Modified: 2023-07-19 10:24 UTC (History)
35 users (show)

Fixed In Version: kernel 6.4-rc3
Doc Type: If docs needed, set a value
Doc Text:
A memory leak issue was found in the Linux kernel media subsystem in the TTUSB DEC driver. It could occur in the ttusb_dec_exit_dvb() function because of the lack of a dvb_frontend_detach call. A local user could trigger this flaw by repeatedly plugging and unplugging the device, potentially causing a denial of service condition.
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Description Guilherme de Almeida Suckevicz 2022-11-25 17:48:03 UTC 
An issue was discovered in the Linux kernel through 6.0.9. drivers/media/usb/ttusb-dec/ttusb_dec.c has a memory leak because of the lack of a dvb_frontend_detach call.

References:
https://lore.kernel.org/linux-media/20221115131822.6640-5-imv4bel@gmail.com/
https://lore.kernel.org/linux-media/20221115131822.6640-1-imv4bel@gmail.com/
Comment 1 Guilherme de Almeida Suckevicz 2022-11-25 17:48:29 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2148521]
Comment 7 Mauro Matteo Cascella 2023-07-18 10:47:39 UTC 
Upstream fix:
https://github.com/torvalds/linux/commit/517a28133832
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