Hi !

It's this week's CVE report.

This week reported one new CVE.

* New CVEs

CVE-2021-20317: lib/timerqueue: Rely on rbtree semantics for next timer

This bug has been fixed in 5.4-rc1 so that before 5.4 kernels are
affected. For 4.19, patch can be applied without any modification. For
4.4, it needs to modify patch to apply it.
According to the description in
cve.mitre.org(https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20317),
it describes "This flaw allows a local attacker with special user
privileges to cause a denial of service" so I think this vulnerability
severity may be low.

CVSS v3 score is not provided.

Fixed status

mainline: [511885d7061eda3eb1faf3f57dcc936ff75863f1]
stable/5.10: [511885d7061eda3eb1faf3f57dcc936ff75863f1]
stable/5.14: [511885d7061eda3eb1faf3f57dcc936ff75863f1]
stable/5.4: [511885d7061eda3eb1faf3f57dcc936ff75863f1]

* Updated CVEs

No updated CVEs this week.

Currently tracking CVEs

CVE-2021-31615: Unencrypted Bluetooth Low Energy baseband links in
Bluetooth Core Specifications 4.0 through 5.2

There is no fix information.

CVE-2021-3640: UAF in sco_send_frame function

There is no fix information.

CVE-2020-26555: BR/EDR pin code pairing broken

No fix information

CVE-2020-26556: kernel: malleable commitment Bluetooth Mesh Provisioning

No fix information.

CVE-2020-26557: kernel: predictable Authvalue in Bluetooth Mesh
Provisioning Leads to MITM

No fix information.

CVE-2020-26559: kernel: Authvalue leak in Bluetooth Mesh Provisioning

No fix information.

CVE-2020-26560: kernel: impersonation attack in Bluetooth Mesh Provisioning

No fix information.


Regards,
--
Masami Ichikawa
Cybertrust Japan Co., Ltd.

Email :masami.ichikawa@...
:masami.ichikawa@...