Re: CVE-2023-52666: ksmbd: fix potential circular locking issue in smb2_set_ea()

Re: CVE-2023-52666: ksmbd: fix potential circular locking issue in smb2_set_ea()

[Wang Zhaolong]

> 
> The Linux kernel CVE team recommends that you update to the latest
> stable kernel version for this, and many other bugfixes.  Individual
> changes are never tested alone, but rather are part of a larger kernel
> release.  Cherry-picking individual commits is not recommended or
> supported by the Linux kernel community at all.  If however, updating to
> the latest release is impossible, the individual changes to resolve this
> issue can be found at these commits:
> 	https://git.kernel.org/stable/c/5349fd419e4f685d609c85b781f2b70f0fb14848
> 	https://git.kernel.org/stable/c/e61fc656ceeaec65f19a92f0ffbeb562b7941e8d
> 	https://git.kernel.org/stable/c/e9ec6665de8f706b4f4133b87b2bd02a159ec57b
> 	https://git.kernel.org/stable/c/ecfd93955994ecc2a1308f5ee4bd90c7fca9a8c6
> 	https://git.kernel.org/stable/c/6fc0a265e1b932e5e97a038f99e29400a93baad0

Hello.

Is this a valid CVE patch?

I noticed that the introduced `get_write` is not being used within the
function, and there are no follow-up patches addressing this.

Best regards,

Wang Zhaolong

Re: CVE-2023-52666: ksmbd: fix potential circular locking issue in smb2_set_ea()

[Namjae Jeon]

2024년 6월 11일 (화) 오후 8:30, Wang Zhaolong <wangzhaolong1@huawei.com>님이 작성:
>
>
> >
> > The Linux kernel CVE team recommends that you update to the latest
> > stable kernel version for this, and many other bugfixes.  Individual
> > changes are never tested alone, but rather are part of a larger kernel
> > release.  Cherry-picking individual commits is not recommended or
> > supported by the Linux kernel community at all.  If however, updating to
> > the latest release is impossible, the individual changes to resolve this
> > issue can be found at these commits:
> >       https://git.kernel.org/stable/c/5349fd419e4f685d609c85b781f2b70f0fb14848
> >       https://git.kernel.org/stable/c/e61fc656ceeaec65f19a92f0ffbeb562b7941e8d
> >       https://git.kernel.org/stable/c/e9ec6665de8f706b4f4133b87b2bd02a159ec57b
> >       https://git.kernel.org/stable/c/ecfd93955994ecc2a1308f5ee4bd90c7fca9a8c6
> >       https://git.kernel.org/stable/c/6fc0a265e1b932e5e97a038f99e29400a93baad0
>
> Hello.
>
> Is this a valid CVE patch?
>
> I noticed that the introduced `get_write` is not being used within the
> function, and there are no follow-up patches addressing this.
My bad, I'll update this.
Thank you for your review.
>
> Best regards,
>
> Wang Zhaolong
>

Re: CVE-2023-52666: ksmbd: fix potential circular locking issue in smb2_set_ea()

[Greg Kroah-Hartman]

On Tue, Jun 11, 2024 at 07:30:20PM +0800, Wang Zhaolong wrote:
> 
> > 
> > The Linux kernel CVE team recommends that you update to the latest
> > stable kernel version for this, and many other bugfixes.  Individual
> > changes are never tested alone, but rather are part of a larger kernel
> > release.  Cherry-picking individual commits is not recommended or
> > supported by the Linux kernel community at all.  If however, updating to
> > the latest release is impossible, the individual changes to resolve this
> > issue can be found at these commits:
> > 	https://git.kernel.org/stable/c/5349fd419e4f685d609c85b781f2b70f0fb14848
> > 	https://git.kernel.org/stable/c/e61fc656ceeaec65f19a92f0ffbeb562b7941e8d
> > 	https://git.kernel.org/stable/c/e9ec6665de8f706b4f4133b87b2bd02a159ec57b
> > 	https://git.kernel.org/stable/c/ecfd93955994ecc2a1308f5ee4bd90c7fca9a8c6
> > 	https://git.kernel.org/stable/c/6fc0a265e1b932e5e97a038f99e29400a93baad0
> 
> Hello.
> 
> Is this a valid CVE patch?
> 
> I noticed that the introduced `get_write` is not being used within the
> function, and there are no follow-up patches addressing this.

Yeah, that's odd.  No, it's not, I'll go revoke this now, thanks for
noticing!

greg k-h