Summary
It was discovered that some AMD x86-64 processors with SMT enabled could
speculatively execute instructions using a return address from a sibling
thread. A local attacker could possibly use this to expose sensitive
information. (CVE-2022-27672)
Zheng Wang discovered that the Intel i915 graphics driver in the Linux
kernel did not properly handle certain error conditions, leading to a
double-free. A local attacker could possibly use this to cause a denial of
service (system crash). (CVE-2022-3707)
Jordy Zomer and Alexandra Sandulescu discovered that the Linux kernel did
not properly implement speculative execution barriers in usercopy functions
in certain situations. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2023-0459)
It was discovered that the TLS subsystem in the Linux kernel contained a
type confusion vulnerability in some situations. A local attacker could use
this to cause a denial of service (system crash) or possibly expose
sensitive information. (CVE-2023-1075)
It was discovered that the Reliable Datagram Sockets (RDS) protocol
implementation in the Linux kernel contained a type confusion vulnerability
in some situations. An attacker could use this to cause a denial of service
(system crash). (CVE-2023-1078)
Xingyuan Mo discovered that the x86 KVM implementation in the Linux kernel
did not properly initialize some data structures. A local attacker could
use this to expose sensitive information (kernel memory). (CVE-2023-1513)
It was discovered that the Android Binder IPC subsystem in the Linux kernel
did not properly validate inputs in some situations, 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-2023-20938)
It was discovered that a use-after-free vulnerability existed in the iSCSI
TCP implementation in the Linux kernel. A local attacker could possibly use
this to cause a denial of service (system crash). (CVE-2023-2162)
It was discovered that the NET/ROM protocol implementation in the Linux
kernel contained a race condition in some situations, 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-2023-32269)
Duoming Zhou discovered that a race condition existed in the infrared
receiver/transceiver driver in the Linux kernel, leading to a use-after-
free vulnerability. A privileged attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2023-1118)
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp-5.15 | 5.15.0-1034.42~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gke-5.15 | 5.15.0-1033.38~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle-5.15 | 5.15.0-1035.41~20.04.1 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gcp | 5.15.0-1034.42 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gke | 5.15.0-1033.38 |
| Ubuntu · 22.04 LTS 22.04:LTS | linux-gkeop | 5.15.0-1020.25 |
Vulnerabilities 10
-
High 8.1CVE-2023-20938 Public exploit
In binder_transaction_buffer_release of binder.c, there is a possible use after free due to improper input validation. …
-
High 7.8
A flaw was found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol. The rds_rm_zerocopy_callback() uses l…
-
High 7.8
A flaw use after free in the Linux kernel integrated infrared receiver/transceiver driver was found in the way user det…
-
Medium 6.7
An issue was discovered in the Linux kernel before 6.1.11. In net/netrom/af_netrom.c, there is a use-after-free because…
-
Medium 6.5
Copy_from_user Spectre-V1 Gadget in Linux Kernel
Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend u…
-
Medium 5.5
A double-free memory flaw was found in the Linux kernel. The Intel GVT-g graphics driver triggers VGA card system resou…
-
Medium 5.5
A use-after-free vulnerability was found in iscsi_sw_tcp_session_create in drivers/scsi/iscsi_tcp.c in SCSI sub-compone…
-
Low 3.3
A flaw was found in the Linux Kernel. The tls_is_tx_ready() incorrectly checks for list emptiness, potentially accessin…
-
Low 3.3
A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some uninitialized…
-
Unscored —
When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thre…
References
-
report
https://ubuntu.com/security/CVE-2022-3707
-
report
https://ubuntu.com/security/CVE-2022-27672
-
report
https://ubuntu.com/security/CVE-2023-0459
-
report
https://ubuntu.com/security/CVE-2023-1075
-
report
https://ubuntu.com/security/CVE-2023-1078
-
report
https://ubuntu.com/security/CVE-2023-1118
-
report
https://ubuntu.com/security/CVE-2023-1513
-
report
https://ubuntu.com/security/CVE-2023-2162
-
report
https://ubuntu.com/security/CVE-2023-20938
-
report
https://ubuntu.com/security/CVE-2023-32269