Summary
David Bouman and Billy Jheng Bing Jhong discovered that a race condition
existed in the io_uring subsystem in the Linux kernel, 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-2022-2602)
Sönke Huster discovered that an integer overflow vulnerability existed in
the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A
physically proximate attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-41674)
Sönke Huster discovered that the WiFi driver stack in the Linux kernel did
not properly perform reference counting in some situations, leading to a
use-after-free vulnerability. A physically proximate attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2022-42720)
Sönke Huster discovered that the WiFi driver stack in the Linux kernel did
not properly handle BSSID/SSID lists in some situations. A physically
proximate attacker could use this to cause a denial of service (infinite
loop). (CVE-2022-42721)
Fixed packages 18
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws-5.4 | 5.4.0-1088.96~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-5.4 | 5.4.0-1094.100~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-5.4 | 5.4.0-1092.101~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-hwe-5.4 | 5.4.0-131.147~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-ibm-5.4 | 5.4.0-1036.41~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle-5.4 | 5.4.0-1086.95~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-raspi-5.4 | 5.4.0-1073.84~18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux | 5.4.0-131.147 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws | 5.4.0-1088.96 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure | 5.4.0-1094.100 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-bluefield | 5.4.0-1049.55 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp | 5.4.0-1092.101 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gke | 5.4.0-1086.93 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1056.60 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-ibm | 5.4.0-1036.41 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-kvm | 5.4.0-1078.84 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle | 5.4.0-1086.95 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-raspi | 5.4.0-1073.84 |
Vulnerabilities 4
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High 8.1
An issue was discovered in the Linux kernel before 5.19.16. Attackers able to inject WLAN frames could cause a buffer o…
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High 7.8
Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before …
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Medium 5.5
A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could…
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Medium 5.3CVE-2022-2602 Public exploit
io_uring UAF, Unix SCM garbage collection