Bug 2215835 (CVE-2023-35823) - CVE-2023-35823 kernel: saa7134: race condition leading to use-after-free in saa7134_finidev()
Summary: CVE-2023-35823 kernel: saa7134: race condition leading to use-after-free in s...
Keywords:
Status: NEW
Alias: CVE-2023-35823
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Nobody
QA Contact:
URL:
Whiteboard:
: 2216007 (view as bug list)
Depends On: 2215902 2216140 2215903 2215916
Blocks: 2215849
TreeView+ depends on / blocked
 
Reported: 2023-06-19 06:18 UTC by TEJ RATHI
Modified: 2023-07-07 08:28 UTC (History)
46 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 saa7134 device driver. This occurs when removing the module before cleanup in the saa7134_finidev function which can result in a use-after-free issue, possibly leading to a system crash or other undefined behaviors.
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description TEJ RATHI 2023-06-19 06:18:53 UTC 
An issue was discovered in the Linux kernel before 6.3.2. A use-after-free was found in saa7134_finidev in drivers/media/pci/saa7134/saa7134-core.c.

https://lore.kernel.org/all/49bb0b6a-e669-d4e7-d742-a19d2763e947@xs4all.nl/
https://lore.kernel.org/lkml/20230318085023.832510-1-zyytlz.wz@163.com/t/
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30cf57da176cca80f11df0d9b7f71581fe601389
Comment 2 TEJ RATHI 2023-06-19 11:20:21 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2215916]
Comment 4 Mauro Matteo Cascella 2023-06-20 07:56:10 UTC 
*** Bug 2216007 has been marked as a duplicate of this bug. ***
Comment 6 Justin M. Forbes 2023-06-21 14:44:44 UTC 
This was fixed for Fedora with the 6.3.2 stable kernel update.
Note You need to log in before you can comment on or make changes to this bug.