* Re: CVE-2021-46934: i2c: validate user data in compat ioctl
[not found] <2024022750-CVE-2021-46934-79c8@gregkh>
@ 2024-02-27 13:33 ` Carlos López
2024-02-27 14:06 ` Greg Kroah-Hartman
0 siblings, 1 reply; 2+ messages in thread
From: Carlos López @ 2024-02-27 13:33 UTC (permalink / raw)
To: cve, linux-kernel; +Cc: Greg Kroah-Hartman
Hi,
On 27/2/24 10:48, Greg Kroah-Hartman wrote:
> Description
> ===========
>
> In the Linux kernel, the following vulnerability has been resolved:
>
> i2c: validate user data in compat ioctl
>
> Wrong user data may cause warning in i2c_transfer(), ex: zero msgs.
> Userspace should not be able to trigger warnings, so this patch adds
> validation checks for user data in compact ioctl to prevent reported
> warnings
What's the security impact here exactly?
--
Carlos López
Security Engineer
SUSE Software Solutions
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: CVE-2021-46934: i2c: validate user data in compat ioctl
2024-02-27 13:33 ` CVE-2021-46934: i2c: validate user data in compat ioctl Carlos López
@ 2024-02-27 14:06 ` Greg Kroah-Hartman
0 siblings, 0 replies; 2+ messages in thread
From: Greg Kroah-Hartman @ 2024-02-27 14:06 UTC (permalink / raw)
To: Carlos López; +Cc: cve, linux-kernel
On Tue, Feb 27, 2024 at 02:33:50PM +0100, Carlos López wrote:
> Hi,
>
> On 27/2/24 10:48, Greg Kroah-Hartman wrote:
> > Description
> > ===========
> >
> > In the Linux kernel, the following vulnerability has been resolved:
> >
> > i2c: validate user data in compat ioctl
> >
> > Wrong user data may cause warning in i2c_transfer(), ex: zero msgs.
> > Userspace should not be able to trigger warnings, so this patch adds
> > validation checks for user data in compact ioctl to prevent reported
> > warnings
>
> What's the security impact here exactly?
Userspace should never be able to trigger kernel warnings.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2024-02-27 13:33 ` CVE-2021-46934: i2c: validate user data in compat ioctl Carlos López
2024-02-27 14:06 ` Greg Kroah-Hartman
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