Summary
Elena Petrova discovered that the pin controller device tree implementation
in the Linux kernel did not properly handle string references. A local
attacker could use this to expose sensitive information (kernel memory).
(CVE-2020-0427)
Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen discovered
that legacy pairing and secure-connections pairing authentication in the
Bluetooth protocol could allow an unauthenticated user to complete
authentication without pairing credentials via adjacent access. A
physically proximate attacker could use this to impersonate a previously
paired Bluetooth device. (CVE-2020-10135)
Andy Nguyen discovered that the Bluetooth A2MP implementation in the Linux
kernel did not properly initialize memory in some situations. A physically
proximate remote attacker could use this to expose sensitive information
(kernel memory). (CVE-2020-12352)
It was discovered that a race condition existed in the perf subsystem of
the Linux kernel, leading to a use-after-free vulnerability. An attacker
with access to the perf subsystem could use this to cause a denial of
service (system crash) or possibly execute arbitrary code. (CVE-2020-14351)
It was discovered that the frame buffer implementation in the Linux kernel
did not properly handle some edge cases in software scrollback. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-14390)
It was discovered that the netfilter connection tracker for netlink in the
Linux kernel did not properly perform bounds checking in some situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2020-25211)
It was discovered that the Rados block device (rbd) driver in the Linux
kernel did not properly perform privilege checks for access to rbd devices
in some situations. A local attacker could use this to map or unmap rbd
block devices. (CVE-2020-25284)
It was discovered that the HDLC PPP implementation in the Linux kernel did
not properly validate input in some situations. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2020-25643)
It was discovered that the GENEVE tunnel implementation in the Linux kernel
when combined with IPSec did not properly select IP routes in some
situations. An attacker could use this to expose sensitive information
(unencrypted network traffic). (CVE-2020-25645)
Keyu Man discovered that the ICMP global rate limiter in the Linux kernel
could be used to assist in scanning open UDP ports. A remote attacker could
use to facilitate attacks on UDP based services that depend on source port
randomization. (CVE-2020-25705)
It was discovered that the framebuffer implementation in the Linux kernel
did not properly perform range checks in certain situations. A local
attacker could use this to expose sensitive information (kernel memory).
(CVE-2020-28915)
It was discovered that Power 9 processors could be coerced to expose
information from the L1 cache in certain situations. A local attacker could
use this to expose sensitive information. (CVE-2020-4788)
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | linux | 4.4.0-197.229 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-aws | 4.4.0-1118.132 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-kvm | 4.4.0-1084.93 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-raspi2 | 4.4.0-1142.152 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-snapdragon | 4.4.0-1146.156 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-aws | 4.4.0-1082.86 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-lts-xenial | 4.4.0-197.229~14.04.1 |
Vulnerabilities 12
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Medium 5.4CVE-2020-10135 Public exploit
Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacks
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent att…
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Medium 5.1
IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the da…
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Unscored —
In create_pinctrl of core.c, there is a possible out of bounds read due to a use after free. This could lead to local i…
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Unscored —CVE-2020-12352 Public exploit
Improper access control in BlueZ may allow an unauthenticated user to potentially enable information disclosure via adj…
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Unscored —
A flaw was found in the Linux kernel. A use-after-free memory flaw was found in the perf subsystem allowing a local att…
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Unscored —
A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory wri…
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Unscored —
In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a loca…
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Unscored —
The rbd block device driver in drivers/block/rbd.c in the Linux kernel through 5.8.9 used incomplete permission checkin…
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Unscored —
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read ov…
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Unscored —
A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypte…
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Unscored —CVE-2020-25705 Public exploit
A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an of…
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Unscored —
A buffer over-read (at the framebuffer layer) in the fbcon code in the Linux kernel before 5.8.15 could be used by loca…
References
-
report
https://ubuntu.com/security/CVE-2020-0427
-
report
https://ubuntu.com/security/CVE-2020-4788
-
report
https://ubuntu.com/security/CVE-2020-10135
-
report
https://ubuntu.com/security/CVE-2020-12352
-
report
https://ubuntu.com/security/CVE-2020-14351
-
report
https://ubuntu.com/security/CVE-2020-14390
-
report
https://ubuntu.com/security/CVE-2020-25211
-
report
https://ubuntu.com/security/CVE-2020-25284
-
report
https://ubuntu.com/security/CVE-2020-25643
-
report
https://ubuntu.com/security/CVE-2020-25645
-
report
https://ubuntu.com/security/CVE-2020-25705
-
report
https://ubuntu.com/security/CVE-2020-28915