Re: New CVE entry this week

Nobuhiro Iwamatsu


-----Original Message-----
From: cip-dev@... [mailto:cip-dev@...] On Behalf Of Pavel Machek
Sent: Thursday, September 2, 2021 3:28 PM
To: cip-dev@...
Subject: Re: [cip-dev] New CVE entry this week


* CVE short summary
These summaries are not so short; I simply skip them and go to full
list. Perhaps they don't need to be included, or could include only
CVEs where we need to take an action?

* CVE detail

New CVEs

CVE-2021-3739: btrfs: fix NULL pointer dereference when deleting
device by invalid id

Fixed in btrfs tree but not fixed in mainline yet.
This vulnerability has been introduced since 4.20-rc1 so before 4.20
kernel aren't affected this vulnerability.

Fixed status

mainline: [e4571b8c5e9ffa1e85c0c671995bd4dcc5c75091]
This one is queued for 5.10.62, so this is getting fixed for us.

CVE-2021-3743: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c

The Qualcomm's IPC router protocol(qrtr) has been introduced since
4.15-rc1 so before 4.15 kernels aren't affected.
Checked on cip-kernel-config, it looks like no CIP member enables QRTR.

Fixed status

mainline: [7e78c597c3ebfd0cb329aa09a838734147e4f117]
Fixes are queued for 4.19 and 5.10.62, so this is getting fixed for us.

CVE-2021-3753: A out-of-bounds caused by the race of KDSETMODE in vt

Commit ffb324e6f874121f7dce5bdae5e05d02baae7269 introduced race
condition and oob bug. The commit ffb324e6f874 have been backported to
4.4 and 4.19.
Agreed, fixed in 4.19.192 and 4.4.270. Nothing for us to do there.

Updated CVEs

CVE-2020-3702: Specifically timed and handcrafted traffic can cause
internal errors in a WLAN device that lead to improper layer 2 Wi-Fi
encryption with a consequent possibility of information disclosure
over the air for a discrete set of traffic

Vulnerability in ath9k driver. 4.4.y-cip/arm/siemens_imx6_defconfig
and 4.4.y-cip/arm/moxa_mxc_defconfig use ath9k.
Fixed in 4.14 but not 4.4.

stable/4.14: [2cbb22fd4b4fb4d0822d185bf5bd6d027107bfda,
Diffstat looks like this:

key.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
main.c | 5 +++++
1 file changed, 5 insertions(+)
ath.h | 1 +
key.c | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
ath.h | 2 +-
ath5k/mac80211-ops.c | 2 +-
ath9k/htc_drv_main.c | 2 +-
ath9k/main.c | 5 ++---
key.c | 34 +++++++++++++++++-----------------
5 files changed, 22 insertions(+), 23 deletions(-)
hw.h | 1
main.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 87 insertions(+), 1 deletion(-)
I checked the patch application and build at hand.
We can backport without any changes to 4.4 tree. But I don't have this device, so I can't confirm the working.

Best regards,

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