Summary
It was discovered that the VFIO PCI driver in the Linux kernel did not
properly handle attempts to access disabled memory spaces. A local attacker
could use this to cause a denial of service (system crash).
(CVE-2020-12888)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did
not properly verify certain fragmented frames. A physically proximate
attacker could possibly use this issue to inject or decrypt packets.
(CVE-2020-26141)
Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation
accepted plaintext fragments in certain situations. A physically proximate
attacker could use this issue to inject packets. (CVE-2020-26145)
It was discovered that a race condition existed in the Atheros Ath9k WiFi
driver in the Linux kernel. An attacker could possibly use this to expose
sensitive information (WiFi network traffic). (CVE-2020-3702)
It was discovered a race condition existed in the Unix domain socket
implementation in the Linux kernel, leading to a use-after-free
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-0920)
It was discovered that the IPv6 implementation in the Linux kernel
contained a use-after-free vulnerability. A local attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2021-0935)
Zygo Blaxell discovered that the btrfs file system implementation in the
Linux kernel contained a race condition during certain cloning operations.
A local attacker could possibly use this to cause a denial of service
(system crash). (CVE-2021-28964)
Dan Carpenter discovered that the block device manager (dm) implementation
in the Linux kernel contained a buffer overflow in the ioctl for listing
devices. A privileged local attacker could use this to cause a denial of
service (system crash). (CVE-2021-31916)
It was discovered that the Option USB High Speed Mobile device driver in
the Linux kernel did not properly handle error conditions. A physically
proximate attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2021-37159)
It was discovered that the network packet filtering implementation in the
Linux kernel did not properly initialize information in certain
circumstances. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2021-39636)
Jann Horn discovered a race condition in the Unix domain socket
implementation in the Linux kernel that could result in a read-after-free.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2021-4083)
Luo Likang discovered that the FireDTV Firewire driver 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) or
possibly execute arbitrary code. (CVE-2021-42739)
Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver
in the Linux kernel did not properly handle some error conditions. A
physically proximate attacker could use this to cause a denial of service
(system crash). (CVE-2021-43976)
Amit Klein discovered that the IPv4 implementation in the Linux kernel
could disclose internal state in some situations. An attacker could
possibly use this to expose sensitive information. (CVE-2021-45486)
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-aws | 4.4.0-1103.108 |
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-lts-xenial | 4.4.0-223.256~14.04.1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux | 4.4.0-223.256 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-aws | 4.4.0-1139.153 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-kvm | 4.4.0-1104.113 |
Vulnerabilities 14
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Medium 6.4CVE-2021-0920 Exploited
In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to loc…
KEV May 23, 2022 -
Unscored —
The VFIO PCI driver in the Linux kernel through 5.6.13 mishandles attempts to access disabled memory space.
-
Unscored —
An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verif…
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Unscored —
An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept s…
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Unscored —
u'Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 W…
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Unscored —
In ip6_xmit of ip6_output.c, there is a possible out of bounds write due to a use after free. This could lead to local …
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Unscored —
A race condition was discovered in get_old_root in fs/btrfs/ctree.c in the Linux kernel through 5.11.8. It allows attac…
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Unscored —
An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver …
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Unscored —
hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checkin…
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Unscored —
In do_ipt_get_ctl and do_ipt_set_ctl of ip_tables.c, there is a possible way to leak kernel information due to uninitia…
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Unscored —
A read-after-free memory flaw was found in the Linux kernel's garbage collection for Unix domain socket file handlers i…
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Unscored —
The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/fire…
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Unscored —
In the Linux kernel through 5.15.2, mwifiex_usb_recv in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker (…
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Unscored —
In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash…
References
-
report
https://ubuntu.com/security/CVE-2020-3702
-
report
https://ubuntu.com/security/CVE-2020-12888
-
report
https://ubuntu.com/security/CVE-2020-26141
-
report
https://ubuntu.com/security/CVE-2020-26145
-
report
https://ubuntu.com/security/CVE-2021-0920
-
report
https://ubuntu.com/security/CVE-2021-0935
-
report
https://ubuntu.com/security/CVE-2021-4083
-
report
https://ubuntu.com/security/CVE-2021-28964
-
report
https://ubuntu.com/security/CVE-2021-31916
-
report
https://ubuntu.com/security/CVE-2021-37159
-
report
https://ubuntu.com/security/CVE-2021-39636
-
report
https://ubuntu.com/security/CVE-2021-42739
-
report
https://ubuntu.com/security/CVE-2021-43976
-
report
https://ubuntu.com/security/CVE-2021-45486