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ALSA-2021:5227 Not scored

Moderate: kernel security and bug fix update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * panic while breaking a lease/delegation after user mode helper invocation (BZ#2010333) * The ASR driver is causing a system crash in AlmaLinux8.4 compared to AlmaLinux8.3 due to kernel changes (BZ#2016384) * AlmaLinux8: DFS provided SMB shares are not accessible following unprivileged access (BZ#2017177) * Avoid hitting the rtnl_trylock/restart_syscall logic in net-sysfs when possible (BZ#2021165) * AlmaLinux8: x86/Kconfig: Do not enable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT (BZ#2024678) * AlmaLinux8.4-[Regression][P10][DD2.0][Rainier/Denali] - system crashed while offlining and onlining cores (BZ#2026450)

Exploit probability Not scored
Published December 21, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 kernel-tools-libs-devel

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:5227

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * panic while breaking a lease/delegation after user mode helper invocation (BZ#2010333) * The ASR driver is causing a system crash in AlmaLinux8.4 compared to AlmaLinux8.3 due to kernel changes (BZ#2016384) * AlmaLinux8: DFS provided SMB shares are not accessible following unprivileged access (BZ#2017177) * Avoid hitting the rtnl_trylock/restart_syscall logic in net-sysfs when possible (BZ#2021165) * AlmaLinux8: x86/Kconfig: Do not enable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT (BZ#2024678) * AlmaLinux8.4-[Regression][P10][DD2.0][Rainier/Denali] - system crashed while offlining and onlining cores (BZ#2026450)

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05 / REFERENCES

Further evidence