Summary
It was discovered that the Packet network protocol implementation in the
Linux kernel contained a double-free vulnerability. A local attacker could
use this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-22600)
Szymon Heidrich discovered that the USB Gadget subsystem in the Linux
kernel did not properly restrict the size of control requests for certain
gadget types, leading to possible out of bounds reads or writes. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2021-39685)
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)
Kirill Tkhai discovered that the XFS file system implementation in the
Linux kernel did not calculate size correctly when pre-allocating space in
some situations. A local attacker could use this to expose sensitive
information. (CVE-2021-4155)
Lin Ma discovered that the NFC Controller Interface (NCI) implementation in
the Linux kernel contained a race condition, 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-2021-4202)
Brendan Dolan-Gavitt discovered that the aQuantia AQtion Ethernet device
driver in the Linux kernel did not properly validate meta-data coming from
the device. A local attacker who can control an emulated device can use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2021-43975)
Sushma Venkatesh Reddy discovered that the Intel i915 graphics driver in
the Linux kernel did not perform a GPU TLB flush in some situations. A
local attacker could use this to cause a denial of service or possibly
execute arbitrary code. (CVE-2022-0330)
It was discovered that the VMware Virtual GPU driver in the Linux kernel
did not properly handle certain failure conditions, leading to a stale
entry in the file descriptor table. A local attacker could use this to
expose sensitive information or possibly gain administrative privileges.
(CVE-2022-22942)
Fixed packages 18
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws-5.4 | 5.4.0-1066.69~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-5.4 | 5.4.0-1070.73~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-5.4 | 5.4.0-1065.69~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gkeop-5.4 | 5.4.0-1034.35~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-hwe-5.4 | 5.4.0-100.113~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-ibm-5.4 | 5.4.0-1015.16~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle-5.4 | 5.4.0-1064.68~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-raspi-5.4 | 5.4.0-1053.60~18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws | 5.4.0-1066.69 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure | 5.4.0-1070.73 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure-fde | 5.4.0-1070.73+cvm1.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-bluefield | 5.4.0-1028.31 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp | 5.4.0-1065.69 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1034.35 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-ibm | 5.4.0-1015.16 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-kvm | 5.4.0-1056.58 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle | 5.4.0-1064.68 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-raspi | 5.4.0-1053.60 |
Vulnerabilities 8
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Medium 6.6
Double Free in net/packet/af_packet.c leading to priviledge escalation
A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1…
KEV Apr 11, 2022 -
High 7.8CVE-2022-22942 Public exploit
The vmwgfx driver contains a local privilege escalation vulnerability that allows unprivileged users to gain access to …
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Unscored —CVE-2021-39685 Public exploit
In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an incorrect flag …
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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 —
A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files wi…
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Unscored —
A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux ker…
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Unscored —
In the Linux kernel through 5.15.2, hw_atl_utils_fw_rpc_wait in drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_ut…
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Unscored —
A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the way a user may …
References
-
report
https://ubuntu.com/security/CVE-2021-4083
-
report
https://ubuntu.com/security/CVE-2021-4155
-
report
https://ubuntu.com/security/CVE-2021-4202
-
report
https://ubuntu.com/security/CVE-2021-22600
-
report
https://ubuntu.com/security/CVE-2021-39685
-
report
https://ubuntu.com/security/CVE-2021-43975
-
report
https://ubuntu.com/security/CVE-2022-0330
-
report
https://ubuntu.com/security/CVE-2022-22942