Summary
It was discovered that a race condition existed in the network scheduling
subsystem of 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-2021-39713)
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges.(CVE-2022-0492)
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)
Bing-Jhong Billy Jheng discovered that the io_uring subsystem in the Linux
kernel contained in integer overflow. A local attacker could use this to
cause a denial of service (system crash) or execute arbitrary code.(CVE-2022-1116)
It was discovered that the Linux kernel did not properly restrict access to
the kernel debugger when booted in secure boot environments. A privileged
attacker could use this to bypass UEFI Secure Boot restrictions.(CVE-2022-21499)
Kyle Zeng discovered that the Network Queuing and Scheduling subsystem of
the Linux kernel did not properly perform reference counting in some
situations, leading to a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or execute
arbitrary code.(CVE-2022-29581)
Jann Horn discovered that the Linux kernel did not properly enforce seccomp
restrictions in some situations. A local attacker could use this to bypass
intended seccomp sandbox restrictions.(CVE-2022-30594)
Fixed packages 32
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | linux-lts-xenial | 4.4.0-227.261~14.04.1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux | 4.4.0-227.261 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-aws | 4.4.0-1143.158 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-aws-hwe | 4.15.0-1130.139~16.04.1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-azure | 4.15.0-1139.152~16.04.1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-gcp | 4.15.0-1124.138~16.04.1 |
| Ubuntu · Pro 16.04 LTS Pro:16.04:LTS | linux-hwe | 4.15.0-180.189~16.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux | 4.15.0-180.189 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-aws | 4.15.0-1130.139 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-aws-5.4 | 5.4.0-1078.84~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-azure-4.15 | 4.15.0-1139.152 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-azure-5.4 | 5.4.0-1083.87~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gcp-4.15 | 4.15.0-1124.138 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gcp-5.4 | 5.4.0-1078.84~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gke-4.15 | — |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gke-5.4 | 5.4.0-1074.79~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-gkeop-5.4 | 5.4.0-1046.48~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-hwe-5.4 | 5.4.0-117.132~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-ibm-5.4 | 5.4.0-1028.32~18.04.1 |
| Ubuntu · Pro 18.04 LTS Pro:18.04:LTS | linux-oem | — |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux | 5.4.0-117.132 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-aws | 5.4.0-1078.84 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-azure | 5.4.0-1083.87 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-gcp | 5.4.0-1078.84 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-gke | 5.4.0-1074.79 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-gkeop | 5.4.0-1046.48 |
| Ubuntu · Pro 20.04 LTS Pro:20.04:LTS | linux-ibm | 5.4.0-1026.29 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | linux | 5.15.0-37.39 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | linux-gcp | 5.15.0-1008.12 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | linux-gke | 5.15.0-1008.10 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | linux-ibm | 5.15.0-1007.8 |
| Ubuntu · Pro 22.04 LTS Pro:22.04:LTS | linux-lowlatency | 5.15.0-37.39 |
Vulnerabilities 7
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High 7.8
A vulnerability was found in the Linux kernel’s cgroup_release_agent_write in the kernel/cgroup/cgroup-v1.c function. T…
KEV Jun 2, 2026 -
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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High 7.8
Integer Overflow or Wraparound vulnerability in io_uring of Linux Kernel allows local attacker to cause memory corrupti…
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High 7.8CVE-2022-29581 Public exploit
Improper Update of Reference Count vulnerability in net/sched of Linux Kernel allows local attacker to cause privilege …
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Medium 6.7
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker w…
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Unscored —
Product: AndroidVersions: Android kernelAndroid ID: A-173788806References: Upstream kernel
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Unscored —CVE-2022-30594 Public exploit
The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers to bypass in…
References
-
report
https://ubuntu.com/security/CVE-2021-39713
-
report
https://ubuntu.com/security/CVE-2022-0492
-
report
https://ubuntu.com/security/CVE-2022-1055
-
report
https://ubuntu.com/security/CVE-2022-1116
-
report
https://ubuntu.com/security/CVE-2022-21499
-
report
https://ubuntu.com/security/CVE-2022-29581
-
report
https://ubuntu.com/security/CVE-2022-30594