Hi, Jan-san,

Thanks for your confirmation!

Iwamatsu-san,

Could you turn off both features from the following configs?

> > - CVE-2020-35519 is relating to X.25.
> >>     4.19.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_X25=m
> >>     5.10.y-cip-rt/x86/siemens_i386-rt_defconfig:CONFIG_X25=m
> > - CVE-2021-20261 is relating to floppy.
> >>     4.4.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_BLK_DEV_FD=m

Best regards,
--
M. Kudo

> -----Original Message-----
> From: Jan Kiszka <jan.kiszka@siemens.com>
> Sent: Friday, March 19, 2021 5:06 PM
> To: 工藤　雅司（CTJ　OSS事業推進室） <masashi.kudo@cybertrust.co.jp>;
> minmin@plathome.co.jp; cip-dev@lists.cip-project.org
> Cc: pavel@denx.de; nobuhiro1.iwamatsu@toshiba.co.jp; wens@csie.org
> Subject: Re: [Feedback Requested] RE: Cip-kernel-sec Updates for Week of
> 2021-03-18
> 
> On 18.03.21 10:33, masashi.kudo@cybertrust.co.jp wrote:
> > Hi, Jan-san, Minda-san,
> >
> > Please find the CVE report as follows.
> > In the analysis of those CVEs, we found some doubts about the configs.
> >
> > - CVE-2020-35519 is relating to X.25.
> > X.25 is enabled as follows, but we wonder whether X.25 is really used or not.
> >>     4.4.y-cip/x86/plathome_obsvx1.config:CONFIG_X25=m
> >>     4.19.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_X25=m
> >>     5.10.y-cip-rt/x86/siemens_i386-rt_defconfig:CONFIG_X25=m
> >
> > Please confirm, and let us know whether X.25 should be disabled.
> >
> > - CVE-2021-20261 is relating to floppy.
> > It is enabled as follows.
> >>     4.4.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_BLK_DEV_FD=m
> >
> > Please confirm that this can be also disabled.
> >
> 
> Yes, both features can be turned off.
> 
> Thanks,
> Jan
> 
> > Best regards,
> > --
> > M. Kudo
> >
> >> -----Original Message-----
> >> From: Chen-Yu Tsai <wens@csie.org>
> >> Sent: Thursday, March 18, 2021 5:48 PM
> >> To: cip-dev@lists.cip-project.org
> >> Cc: Pavel Machek <pavel@denx.de>; Nobuhiro Iwamatsu
> >> <nobuhiro1.iwamatsu@toshiba.co.jp>; 工藤　雅司（CTJ　OSS事業推進室）
> >> <masashi.kudo@cybertrust.co.jp>
> >> Subject: Cip-kernel-sec Updates for Week of 2021-03-18
> >>
> >> Hi everyone,
> >>
> >> Six new issues this week from the Ubuntu tracker:
> >>
> >> - CVE-2020-35519 [net/x25: buffer overflow] - fixed
> >>   Looks like a few configs still have X.25 enabled:
> >>     4.4.y-cip/x86/plathome_obsvx1.config:CONFIG_X25=m
> >>     4.19.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_X25=m
> >>     5.10.y-cip-rt/x86/siemens_i386-rt_defconfig:CONFIG_X25=m
> >>   Maybe they should be revisited? cip-kernel-config also gives warnings
> >>   for CONFIG_X25.
> >>
> >> - CVE-2021-20219 [improper synchronization in flush_to_ldisc()] -
> >> likely RedHat only
> >>   Report mentions incorrect backport in RedHat kernels.
> >>
> >> - CVE-2021-20261 [floppy: race condition data corruption] - fixed
> >>   No member enables this except:
> >>     4.4.y-cip-rt/x86/siemens_i386-rt.config:CONFIG_BLK_DEV_FD=m
> >>   which should probably be turned off.
> >>
> >> - CVE-2021-28375 [fastrpc: allows sending kernel RPCs] - fixed
> >>   No member enables this.
> >>
> >> - CVE-2021-28660 [rtl8188eu: array access out-of-bounds] - fixed
> >>   No member enables this.
> >>
> >> - CVE-2021-3428 [integer overflow in ext4_es_cache_extent] - unclear [1]
> >>   Requires a specially-crafted ext4 FS image, so we likely don't care.
> >>
> >> Unfortunately Debian's Salsa service, where the Debian kernel
> >> security issue tracker is hosted, is currently down, so we only have one source
> of data this week.
> >>
> >>
> >> Regards
> >> ChenYu
> >>
> >>
> >> [1]
> >> https://lore.kernel.org/stable/20210317151834.GE2541@quack2.suse.cz/
> 
> 
> --
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux