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Re: [SECURITY] [DSA 4774-1] linux security update

On 10/19/20 3:12 PM, Salvatore Bonaccorso wrote:
> -------------------------------------------------------------------------
> Debian Security Advisory DSA-4774-1                   security@debian.org
> https://www.debian.org/security/                     Salvatore Bonaccorso
> October 19, 2020                      https://www.debian.org/security/faq
> -------------------------------------------------------------------------
> Package        : linux
> CVE ID         : CVE-2020-12351 CVE-2020-12352 CVE-2020-25211 CVE-2020-25643
>                  CVE-2020-25645
> Debian Bug     : 908712
> Several vulnerabilities have been discovered in the Linux kernel that
> may lead to the execution of arbitrary code, privilege escalation,
> denial of service or information leaks.
> CVE-2020-12351
>     Andy Nguyen discovered a flaw in the Bluetooth implementation in the
>     way L2CAP packets with A2MP CID are handled. A remote attacker in
>     short distance knowing the victim's Bluetooth device address can
>     send a malicious l2cap packet and cause a denial of service or
>     possibly arbitrary code execution with kernel privileges.
> CVE-2020-12352
>     Andy Nguyen discovered a flaw in the Bluetooth implementation. Stack
>     memory is not properly initialised when handling certain AMP
>     packets. A remote attacker in short distance knowing the victim's
>     Bluetooth device address address can retrieve kernel stack
>     information.
> CVE-2020-25211
>     A flaw was discovered in netfilter subsystem. A local attacker
>     able to inject conntrack Netlink configuration can cause a denial
>     of service.
> CVE-2020-25643
>     ChenNan Of Chaitin Security Research Lab discovered a flaw in the
>     hdlc_ppp module. Improper input validation in the ppp_cp_parse_cr()
>     function may lead to memory corruption and information disclosure.
> CVE-2020-25645
>     A flaw was discovered in the interface driver for GENEVE
>     encapsulated traffic when combined with IPsec. If IPsec is
>     configured to encrypt traffic for the specific UDP port used by the
>     GENEVE tunnel, tunneled data isn't correctly routed over the
>     encrypted link and sent unencrypted instead.
> For the stable distribution (buster), these problems have been fixed in
> version 4.19.152-1. The vulnerabilities are fixed by rebasing to the new
> stable upstream version 4.19.152 which includes additional bugfixes.
> We recommend that you upgrade your linux packages.
> For the detailed security status of linux please refer to its security
> tracker page at:
> https://security-tracker.debian.org/tracker/linux
> Further information about Debian Security Advisories, how to apply
> these updates to your system and frequently asked questions can be
> found at: https://www.debian.org/security/
> Mailing list: debian-security-announce@lists.debian.org

Hi Debian Linux kernel maintainers.

Last Linux kernel security update was with newer patch level version,
what in Linux is actually minor version. This way of updates works for
my needs better.

Thank you very much.

Kind regards

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