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Today, Canonical published new Linux kernel security updates for all of its supported Ubuntu releases, including the recently released Ubuntu 22.04 LTS, to address up to three vulnerabilities discovered by various security researchers.
The new Ubuntu kernel security update addresses CVE-2022-29581, a use-after-free vulnerability discovered by Kyle Zeng in the Network Queuing and Scheduling subsystem that could allow a local attacker to cause a denial of service (system crash) or execute arbitrary code.
It also patches CVE-2022-30594, a security issue discovered by Jann Horn where the Linux kernel improperly enforces seccomp restrictions in some situations, thus allowing a local attacker to bypass seccomp sandbox restrictions.
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