Summary
It was discovered that the NFSD implementation in the Linux kernel did not
properly handle some RPC messages, leading to a buffer overflow. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-43945)
Tamás Koczka discovered that the Bluetooth L2CAP handshake implementation
in the Linux kernel contained multiple use-after-free vulnerabilities. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-42896)
It was discovered that the Xen netback driver in the Linux kernel did not
properly handle packets structured in certain ways. An attacker in a guest
VM could possibly use this to cause a denial of service (host NIC
availability). (CVE-2022-3643)
It was discovered that an integer overflow vulnerability existed in the
Bluetooth subsystem in the Linux kernel. A physically proximate attacker
could use this to cause a denial of service (system crash).
(CVE-2022-45934)
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws-5.4 | 5.4.0-1094.102~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-hwe-5.4 | 5.4.0-137.154~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle | 4.15.0-1113.124 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-snapdragon | 4.15.0-1144.154 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1062.66 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-oracle | 4.15.0-1113.124~16.04.1 |
Vulnerabilities 4
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High 8.0CVE-2022-42896 Public exploit
Info Leak in l2cap_core in the Linux Kernel
There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker coul…
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High 7.8CVE-2022-45934 Public exploit
An issue was discovered in the Linux kernel through 6.0.10. l2cap_config_req in net/bluetooth/l2cap_core.c has an integ…
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High 7.5
The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer overflow. NFSD tracks…
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Unscored —
Guests can trigger NIC interface reset/abort/crash via netback It is possible for a guest to trigger a NIC interface re…