Bug 2162096 (CVE-2022-44033) - CVE-2022-44033 Kernel: A race condition between cm4040_open() and reader_detach() may result in UAF
Summary: CVE-2022-44033 Kernel: A race condition between cm4040_open() and reader_deta...
Alias: CVE-2022-44033
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2162101
Blocks: 2139046
TreeView+ depends on / blocked
Reported: 2023-01-18 19:00 UTC by Rohit Keshri
Modified: 2023-09-25 16:46 UTC (History)
39 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux Kernel. This issue occurs due to a race between cm4040_open() and reader_detach() in drivers/char/pcmcia/cm4040_cs.c when a physically proximate attacker removes a PCMCIA device while calling open().
Clone Of:
Last Closed: 2023-01-21 14:22:15 UTC

Attachments (Terms of Use)

Description Rohit Keshri 2023-01-18 19:00:02 UTC
A race condition may occur if the user physically removes the pcmcia device while calling open() for this char device node. This is a race condition between the cm4040_open() function and the reader_detach() function, which may eventually result in UAF.


Comment 1 Rohit Keshri 2023-01-18 19:03:31 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2162101]

Comment 4 Product Security DevOps Team 2023-01-21 14:22:11 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 8 Justin M. Forbes 2023-09-25 16:46:33 UTC
This was fixed with the 6.4 kernel series which removed these outdated drivers.

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