| Description: | Summary:
The remote host is missing an update for the Debian 'linux-4.9' package(s) announced via the DLA-1919-1 advisory.
Vulnerability Insight:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
CVE-2019-0136
It was discovered that the wifi soft-MAC implementation (mac80211) did not properly authenticate Tunneled Direct Link Setup (TDLS) messages. A nearby attacker could use this for denial of service (loss of wifi connectivity).
CVE-2019-9506
Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered a weakness in the Bluetooth pairing protocols, dubbed the KNOB attack. An attacker that is nearby during pairing could use this to weaken the encryption used between the paired devices, and then to eavesdrop on and/or spoof communication between them.
This update mitigates the attack by requiring a minimum encryption key length of 56 bits.
CVE-2019-11487
Jann Horn discovered that the FUSE (Filesystem-in-Userspace) facility could be used to cause integer overflow in page reference counts, leading to a use-after-free. On a system with sufficient physical memory, a local user permitted to create arbitrary FUSE mounts could use this for privilege escalation.
By default, unprivileged users can only mount FUSE filesystems through fusermount, which limits the number of mounts created and should completely mitigate the issue.
CVE-2019-15211
The syzkaller tool found a bug in the radio-raremono driver that could lead to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.
CVE-2019-15212
The syzkaller tool found that the rio500 driver does not work correctly if more than one device is bound to it. An attacker able to add USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.
CVE-2019-15215
The syzkaller tool found a bug in the cpia2_usb driver that leads to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.
CVE-2019-15216
The syzkaller tool found a bug in the yurex driver that leads to a use-after-free. An attacker able to add and remove USB devices could use this to cause a denial of service (memory corruption or crash) or possibly for privilege escalation.
CVE-2019-15218
The syzkaller tool found that the smsusb driver did not validate that USB devices have the expected endpoints, potentially leading to a null pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).
CVE-2019-15219
The syzkaller tool found that a device initialisation error in the sisusbvga driver could lead to a null pointer dereference. An attacker able to add USB devices could use this to cause a denial of service (BUG/oops).
CVE-2019-15220
The syzkaller tool ... [Please see the references for more information on the vulnerabilities]
Affected Software/OS:
'linux-4.9' package(s) on Debian 8.
Solution:
Please install the updated package(s).
CVSS Score:
10.0
CVSS Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C
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