Bug 2215838 (CVE-2023-35826) - CVE-2023-35826 kernel: cedrus: race condition leading to use-after-free in cedrus_remove()
Summary: CVE-2023-35826 kernel: cedrus: race condition leading to use-after-free in ce...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2023-35826
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: 2186161
Blocks: 2215849
TreeView+ depends on / blocked
 
Reported: 2023-06-19 06:18 UTC by TEJ RATHI
Modified: 2023-06-28 11:57 UTC (History)
45 users (show)

Fixed In Version: kernel 6.4-rc1
Doc Type: If docs needed, set a value
Doc Text:
A race condition was found in the Linux kernel's Allwinner Cedrus VPU driver when removing the module before cleanup in the cedrus_remove function. This can result in a use-after-free issue, possibly leading to a system crash or other undefined behaviors.
Clone Of:
Environment:
Last Closed: 2023-06-19 20:39:05 UTC
Embargoed:

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Description TEJ RATHI 2023-06-19 06:18:58 UTC 
An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in cedrus_remove in drivers/staging/media/sunxi/cedrus/cedrus.c.

https://lore.kernel.org/linux-arm-kernel/20230308032333.1893394-1-zyytlz.wz@163.com/T/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50d0a7aea4809cef87979d4669911276aa23b71f
https://lore.kernel.org/all/a4dafa22-3ee3-dbe1-fd50-fee07883ce1a@xs4all.nl/
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
Comment 1 Mauro Matteo Cascella 2023-06-20 08:49:16 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2186161]
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