Summary
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space applications from sending kernel RPC messages. A local
attacker could possibly use this to gain elevated privileges.
(CVE-2021-28375)
It was discovered that the Realtek RTL8188EU Wireless device driver in the
Linux kernel did not properly validate ssid lengths in some situations. An
attacker could use this to cause a denial of service (system crash).
(CVE-2021-28660)
It was discovered that the USB/IP driver in the Linux kernel contained race
conditions during the update of local and shared status. An attacker could
use this to cause a denial of service (system crash). (CVE-2021-29265)
It was discovered that a race condition existed in the netfilter subsystem
of the Linux kernel when replacing tables. A local attacker could use this
to cause a denial of service (system crash). (CVE-2021-29650)
Arnd Bergmann discovered that the video4linux subsystem in the Linux kernel
did not properly deallocate memory in some situations. A local attacker
could use this to cause a denial of service (memory exhaustion).
(CVE-2021-30002)
Fixed packages 15
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws-5.4 | 5.4.0-1048.50~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-5.4 | 5.4.0-1047.49~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-5.4 | 5.4.0-1043.46~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gke-5.4 | 5.4.0-1043.45~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gkeop-5.4 | 5.4.0-1015.16~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-hwe-5.4 | 5.4.0-73.82~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle-5.4 | 5.4.0-1044.47~18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux | 5.4.0-73.82 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws | 5.4.0-1048.50 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure | 5.4.0-1047.49 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp | 5.4.0-1043.46 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gke | 5.4.0-1043.45 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1015.16 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-kvm | 5.4.0-1039.40 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle | 5.4.0-1045.49 |
Vulnerabilities 7
-
Unscored —
A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5…
-
Unscored —
An issue was discovered in the Linux kernel through 5.11.3, as used with Xen PV. A certain part of the netback driver l…
-
Unscored —
An issue was discovered in the Linux kernel through 5.11.6. fastrpc_internal_invoke in drivers/misc/fastrpc.c does not …
-
Unscored —
rtw_wx_set_scan in drivers/staging/rtl8188eu/os_dep/ioctl_linux.c in the Linux kernel through 5.11.6 allows writing bey…
-
Unscored —
An issue was discovered in the Linux kernel before 5.11.7. usbip_sockfd_store in drivers/usb/usbip/stub_dev.c allows at…
-
Unscored —
An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial …
-
Unscored —
An issue was discovered in the Linux kernel before 5.11.3 when a webcam device exists. video_usercopy in drivers/media/…
References
-
report
https://ubuntu.com/security/CVE-2020-25639
-
report
https://ubuntu.com/security/CVE-2021-28038
-
report
https://ubuntu.com/security/CVE-2021-28375
-
report
https://ubuntu.com/security/CVE-2021-28660
-
report
https://ubuntu.com/security/CVE-2021-29265
-
report
https://ubuntu.com/security/CVE-2021-29650
-
report
https://ubuntu.com/security/CVE-2021-30002