Summary
It was discovered that the Upper Level Protocol (ULP) subsystem in the
Linux kernel did not properly handle sockets entering the LISTEN state in
certain protocols, 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-2023-0461)
Kyle Zeng discovered that the sysctl implementation in the Linux kernel
contained a stack-based buffer overflow. A local attacker could use this to
cause a denial of service (system crash) or execute arbitrary code.
(CVE-2022-4378)
It was discovered that a race condition existed in the Kernel Connection
Multiplexor (KCM) socket implementation in the Linux kernel when releasing
sockets in certain situations. A local attacker could use this to cause a
denial of service (system crash). (CVE-2022-3521)
It was discovered that the Netronome Ethernet driver 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-2022-3545)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform bounds checking in some situations. A
physically proximate attacker could use this to craft a malicious USB
device that when inserted, could cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-3628)
It was discovered that a use-after-free vulnerability existed in the
Bluetooth stack in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3640)
It was discovered that a race condition existed in the Xen network backend
driver in the Linux kernel when handling dropped packets in certain
circumstances. An attacker could use this to cause a denial of service
(kernel deadlock). (CVE-2022-42328, CVE-2022-42329)
Tamás Koczka discovered that the Bluetooth L2CAP implementation in the
Linux kernel did not properly initialize memory in some situations. A
physically proximate attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2022-42895)
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux | 4.15.0-206.217 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws | 4.15.0-1151.164 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-dell300x | 4.15.0-1061.66 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-4.15 | 4.15.0-1146.162 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle | 4.15.0-1115.126 |
Vulnerabilities 9
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High 7.8
A stack overflow flaw was found in the Linux kernel's SYSCTL subsystem in how a user changes certain kernel parameters …
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High 7.8CVE-2023-0461 Public exploit
Use-after-free vulnerability in the Linux Kernel
There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not …
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Medium 6.6
A buffer overflow flaw was found in the Linux kernel Broadcom Full MAC Wi-Fi driver. This issue occurs when a user conn…
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Medium 6.2
Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text exp…
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Medium 5.5
Linux Kernel IPsec nfp_cppcore.c area_cache_get use after free
A vulnerability has been found in Linux Kernel and classified as critical. Affected by this vulnerability is the function area_cache_get of the file drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c of the component IPsec. The manipulation leads to use…
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Medium 5.5
Linux Kernel Bluetooth l2cap_core.c l2cap_conn_del use after free
A vulnerability, which was classified as critical, was found in Linux Kernel. Affected is the function l2cap_conn_del of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommended to apply a pat…
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Medium 5.5
Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text exp…
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Medium 5.1
Info Leak in l2cap_core in the Linux Kernel
There is an infoleak vulnerability in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_parse_conf_req function which can be used to leak kernel pointers remotely. We recommend upgrading past commit https://github.com/torvalds/linux/commit/b1a2cd50c0357f…
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Low 2.6
Linux Kernel kcm kcmsock.c kcm_tx_work race condition
A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function kcm_tx_work of the file net/kcm/kcmsock.c of the component kcm. The manipulation leads to race condition. It is recommended to apply a patch …
References
-
report
https://ubuntu.com/security/CVE-2022-3521
-
report
https://ubuntu.com/security/CVE-2022-3545
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report
https://ubuntu.com/security/CVE-2022-3628
-
report
https://ubuntu.com/security/CVE-2022-3640
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report
https://ubuntu.com/security/CVE-2022-4378
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report
https://ubuntu.com/security/CVE-2022-42328
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report
https://ubuntu.com/security/CVE-2022-42329
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report
https://ubuntu.com/security/CVE-2022-42895
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report
https://ubuntu.com/security/CVE-2023-0461