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 8
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 18.04 LTS 18.04:LTS | linux-hwe-5.4 | 5.4.0-107.121~18.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle-5.4 | 5.4.0-1069.75~18.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux | 5.4.0-107.121 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-aws | 5.4.0-1071.76 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-azure | 5.4.0-1074.77 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-hwe-5.13 | 5.13.0-39.44~20.04.1 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-kvm | 5.4.0-1061.64 |
| Ubuntu · 20.04 LTS 20.04:LTS | linux-oracle | 5.4.0-1069.75 |
Vulnerabilities 2
-
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…