Summary
It was discovered that the network traffic control implementation 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-2022-1055)
It was discovered that the IPsec implementation in the Linux kernel did not
properly allocate enough memory when performing ESP transformations,
leading to a heap-based buffer overflow. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-27666)
Fixed packages 15
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws-5.4 | 5.4.0-1071.76~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-5.4 | 5.4.0-1074.77~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gcp-5.4 | 5.4.0-1069.73~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gke-5.4 | 5.4.0-1067.70~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gkeop-5.4 | 5.4.0-1038.39~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-ibm-5.4 | 5.4.0-1019.21~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-raspi-5.4 | 5.4.0-1058.65~18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws-5.13 | 5.13.0-1021.23~20.04.2 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure-fde | 5.4.0-1074.77+cvm1.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp | 5.4.0-1069.73 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gcp-5.13 | 5.13.0-1023.28~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gke | 5.4.0-1067.70 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-gkeop | 5.4.0-1038.39 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-ibm | 5.4.0-1019.21 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-raspi | 5.4.0-1058.65 |
Vulnerabilities 2
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High 8.6
Use after Free in tc_new_tfilter allowing for privilege escalation in Linux Kernel
A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
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Unscored —CVE-2022-27666 Public exploit
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This fla…