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From: "gaoliming" <gaoliming@byosoft.com.cn>
To: <devel@edk2.groups.io>, <jiewen.yao@intel.com>,
	"'Kun Qin'" <kun.q@outlook.com>
Cc: "'Wang, Jian J'" <jian.j.wang@intel.com>,
	"'Lu, XiaoyuX'" <xiaoyux.lu@intel.com>,
	"'Jiang, Guomin'" <guomin.jiang@intel.com>
Subject: 回复: [edk2-devel] [PATCH v1 1/1] CryptoPkg: BaseCryptLib: Fix buffer double free in CryptPkcs7VerifyEku
Date: Fri, 20 Nov 2020 13:39:01 +0800	[thread overview]
Message-ID: <017801d6beff$73c708d0$5b551a70$@byosoft.com.cn> (raw)
In-Reply-To: <CY4PR11MB12889EBDF7BA36680C75E4E08CE50@CY4PR11MB1288.namprd11.prod.outlook.com>

Kun:
 This is a bug fix. It passed code review. Do you request to merge it for
this stable tag 202011?

Thanks
Liming
> -----邮件原件-----
> 发件人: bounce+27952+67567+4905953+8761045@groups.io
> <bounce+27952+67567+4905953+8761045@groups.io> 代表 Yao, Jiewen
> 发送时间: 2020年11月14日 8:32
> 收件人: Kun Qin <kun.q@outlook.com>; devel@edk2.groups.io
> 抄送: Wang, Jian J <jian.j.wang@intel.com>; Lu, XiaoyuX
> <xiaoyux.lu@intel.com>; Jiang, Guomin <guomin.jiang@intel.com>; Yao,
> Jiewen <jiewen.yao@intel.com>
> 主题: Re: [edk2-devel] [PATCH v1 1/1] CryptoPkg: BaseCryptLib: Fix buffer
> double free in CryptPkcs7VerifyEku
> 
> Sorry, I missed this email.
> 
> Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
> 
> 
> > -----Original Message-----
> > From: Kun Qin <kun.q@outlook.com>
> > Sent: Wednesday, October 21, 2020 10:32 AM
> > To: devel@edk2.groups.io
> > Cc: Wang, Jian J <jian.j.wang@intel.com>; Lu, XiaoyuX
> > <xiaoyux.lu@intel.com>; Yao, Jiewen <jiewen.yao@intel.com>; Jiang,
> > Guomin <guomin.jiang@intel.com>
> > Subject: [PATCH v1 1/1] CryptoPkg: BaseCryptLib: Fix buffer double free
in
> > CryptPkcs7VerifyEku
> >
> > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2459
> >
> > SignerCert is part of Pkcs7 instance when both have valid content.
OpenSLL
> > PKCS7_free function will release the memory of SignerCert when
applicable.
> > Freeing SignerCert with X509_free again might cause page fault if use-
> > after-free guard is enabled.
> >
> > Cc: Jian J Wang <jian.j.wang@intel.com>
> > Cc: Xiaoyu Lu <xiaoyux.lu@intel.com>
> > Cc: Jiewen Yao <jiewen.yao@intel.com>
> > Cc: Guomin Jiang <guomin.jiang@intel.com>
> >
> > Signed-off-by: Kun Qin <kun.q@outlook.com>
> > ---
> >  CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyEku.c | 4 ----
> >  1 file changed, 4 deletions(-)
> >
> > diff --git a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyEku.c
> > b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyEku.c
> > index c9fdb65b99d1..40cc39afe7dd 100644
> > --- a/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyEku.c
> > +++ b/CryptoPkg/Library/BaseCryptLib/Pk/CryptPkcs7VerifyEku.c
> > @@ -508,10 +508,6 @@ Exit:
> >      free (SignedData);
> >
> >    }
> >
> >
> >
> > -  if (SignerCert != NULL) {
> >
> > -    X509_free (SignerCert);
> >
> > -  }
> >
> > -
> >
> >    if (Pkcs7 != NULL) {
> >
> >      PKCS7_free (Pkcs7);
> >
> >    }
> >
> > --
> > 2.28.0.windows.1
> 
> 
> 
> 
> 




  reply	other threads:[~2020-11-20  5:39 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20201021023228.1884-1-kun.q@outlook.com>
2020-10-21  2:32 ` [PATCH v1 1/1] CryptoPkg: BaseCryptLib: Fix buffer double free in CryptPkcs7VerifyEku Kun Qin
2020-10-21 13:31   ` [edk2-devel] " Laszlo Ersek
2020-11-14  0:31   ` Yao, Jiewen
2020-11-20  5:39     ` gaoliming [this message]
2020-11-22  7:09       ` [edk2-devel] " Kun Qin
2020-11-22 12:25         ` Yao, Jiewen
2020-11-23  0:49           ` 回复: " gaoliming
2020-11-23  1:16           ` Kun Qin
2020-11-23  1:24             ` Yao, Jiewen
2020-11-23 22:49               ` kun.q
2020-11-24  1:26                 ` 回复: " gaoliming
2020-11-24  1:31                   ` Yao, Jiewen
     [not found]                   ` <164A4D9262108CA1.16773@groups.io>
2020-11-26  3:26                     ` Yao, Jiewen

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