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Ubuntu 20.04 LTS Update: USN-7421-1 critical Linux kernel issues

ubuntu
Calendar Grey April 7, 2025
Dist Ubuntu Esm H88
Debian Security Alert DSA-5021-1 warns of vulnerabilities in kernel network protocol implementations that could affect cloud services. Update configurations now
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems

- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems

Details:

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the system.

This update corrects flaws in the following subsystems:

- ARM64 architecture;

- MIPS architecture;

- PowerPC architecture;

- RISC-V architecture;

- S390 architecture;

- SuperH RISC architecture;

- User-Mode Linux (UML);

- x86 architecture;

- Block layer subsystem;

- Cryptographic API;

- ACPI drivers;

- Drivers core;

- RAM backed block device driver;

- Virtio block driver;

- Data acquisition framework and drivers;

- Hardware crypto device drivers;

- DMA engine subsystem;

- EDAC drivers;

- ARM SCPI message protocol;

- GPIO subsystem;

- GPU d...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu system compromise cloud security Azure

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS
   linux-image-5.15.0-1086-azure   5.15.0-1086.95~20.04.1
   linux-image-5.15.0-1086-azure-fde  5.15.0-1086.95~20.04.1.1
   linux-image-azure               5.15.0.1086.95~20.04.1
   linux-image-azure-cvm           5.15.0.1086.95~20.04.1
   linux-image-azure-fde           5.15.0.1086.95~20.04.1.61

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References

https://ubuntu.com/security/notices/USN-7421-1

CVE-2022-49034, CVE-2024-26928, CVE-2024-35864, CVE-2024-36476,

CVE-2024-36899, CVE-2024-42069, CVE-2024-42315, CVE-2024-43098,

CVE-2024-43900, CVE-2024-44938, CVE-2024-45828, CVE-2024-46784,

CVE-2024-46809, CVE-2024-46841, CVE-2024-46871, CVE-2024-47143,

CVE-2024-47408, CVE-2024-47707, CVE-2024-47730, CVE-2024-48881,

CVE-2024-49571, CVE-2024-49925, CVE-2024-49950, CVE-2024-49974,

CVE-2024-49996, CVE-2024-49998, CVE-2024-50051, CVE-2024-50055,

CVE-2024-50121, CVE-2024-50242, CVE-2024-50275, CVE-2024-50283,

CVE-2024-50304, CVE-2024-52332, CVE-2024-53096, CVE-2024-53099,

CVE-2024-53112, CVE-2024-53113, CVE-2024-53119, CVE-2024-53120,

CVE-2024-53121, CVE-2024-53122, CVE-2024-53124, CVE-2024-53125,

CVE-2024-53127, CVE-2024-53129, CVE-2024-53130, CVE-2024-53131,

CVE-2024-53135, CVE-2024-53136, CVE-2024-53138, CVE-2024-53140,

CVE-2024-53142, CVE-2024-53145, CVE-2024-53146, CVE-2024-53148,

CVE-2024-53150, CVE-2024-53151, CVE-2024-53155, CVE-2024-53156,

CVE-2024-53157, CVE-2024-53158, CVE-2024-53161, CVE-2024-53165,

CVE-2024-53171, CVE-2024-53172, CVE-2024-53173, CVE-2024-53174,

CVE-2024-53180, CVE-2024-53181, CVE-2024-53183, CVE-2024-53184,

CVE-2024-53194, CVE-2024-53197, CVE-2024-53198, CVE-2024-53206,

CVE-2024-53214, CVE-2024-53215, CVE-2024-53217, CVE-2024-53226,

CVE-2024-53227, CVE-2024-53237, CVE-2024-53239, CVE-2024-53680,

CVE-2024-53685, CVE-2024-53690, CVE-2024-55881, CVE-2024-55916,

CVE-2024-56369, CVE-2024-56531, CVE-2024-56532, CVE-2024-56533,

CVE-2024-56539, CVE-2024-56548, CVE-2024-56558, CVE-2024-56562,

CVE-2024-56567, CVE-2024-56568, CVE-2024-56569, CVE-2024-56570,

CVE-2024-56572, CVE-2024-56574, CVE-2024-56575, CVE-2024-56576,

CVE-2024-56578, CVE-2024-56581, CVE-2024-56586, CVE-2024-56587,

CVE-2024-56589, CVE-2024-56590, CVE-2024-56593, CVE-2024-56594,

CVE-2024-56595, CVE-2024-56596, CVE-2024-56597, CVE-2024-56598,

CVE-2024-56600, CVE-2024-56601, CVE-2024-56602, CVE-2024-56603,

CVE-2024-56605, CVE-2024-56606, CVE-2024-56610, CVE-2024-56614,

CVE-2024-56615, CVE-2024-56616, CVE-2024-56619, CVE-2024-56622,

CVE-2024-56623, CVE-2024-56625, CVE-2024-56626, CVE-2024-56627,

CVE-2024-56629, CVE-2024-56630, CVE-2024-56631, CVE-2024-56633,

CVE-2024-56634, CVE-2024-56636, CVE-2024-56637, CVE-2024-56640,

CVE-2024-56642, CVE-2024-56643, CVE-2024-56644, CVE-2024-56645,

CVE-2024-56648, CVE-2024-56650, CVE-2024-56658, CVE-2024-56659,

CVE-2024-56662, CVE-2024-56670, CVE-2024-56678, CVE-2024-56679,

CVE-2024-56681, CVE-2024-56688, CVE-2024-56690, CVE-2024-56691,

CVE-2024-56693, CVE-2024-56694, CVE-2024-56698, CVE-2024-56700,

CVE-2024-56701, CVE-2024-56704, CVE-2024-56705, CVE-2024-56708,

CVE-2024-56715, CVE-2024-56716, CVE-2024-56720, CVE-2024-56723,

CVE-2024-56724, CVE-2024-56726, CVE-2024-56728, CVE-2024-56739,

CVE-2024-56745, CVE-2024-56746, CVE-2024-56747, CVE-2024-56748,

CVE-2024-56754, CVE-2024-56756, CVE-2024-56759, CVE-2024-56763,

CVE-2024-56767, CVE-2024-56769, CVE-2024-56770, CVE-2024-56774,

CVE-2024-56776, CVE-2024-56777, CVE-2024-56778, CVE-2024-56779,

CVE-2024-56780, CVE-2024-56781, CVE-2024-56785, CVE-2024-56787,

CVE-2024-57791, CVE-2024-57792, CVE-2024-57798, CVE-2024-57802,

CVE-2024-57807, CVE-2024-57838, CVE-2024-57841, CVE-2024-57849,

CVE-2024-57850, CVE-2024-57874, CVE-2024-57882, CVE-2024-57884,

CVE-2024-57889, CVE-2024-57890, CVE-2024-57892, CVE-2024-57896,

CVE-2024-57897, CVE-2024-57900, CVE-2024-57901, CVE-2024-57902,

CVE-2024-57903, CVE-2024-57904, CVE-2024-57906, CVE-2024-57907,

CVE-2024-57908, CVE-2024-57910, CVE-2024-57911, CVE-2024-57912,

CVE-2024-57913, CVE-2024-57917, CVE-2024-57922, CVE-2024-57925,

CVE-2024-57929, CVE-2024-57931, CVE-2024-57938, CVE-2024-57939,

CVE-2024-57940, CVE-2024-57946, CVE-2024-57948, CVE-2024-57951,

CVE-2024-58087, CVE-2025-21631, CVE-2025-21636, CVE-2025-21637,

CVE-2025-21638, CVE-2025-21639, CVE-2025-21640, CVE-2025-21646,

CVE-2025-21648, CVE-2025-21653, CVE-2025-21664, CVE-2025-21665,

CVE-2025-21666, CVE-2025-21669, CVE-2025-21678, CVE-2025-21680,

CVE-2025-21683, CVE-2025-21687, CVE-2025-21689, CVE-2025-21690,

CVE-2025-21692, CVE-2025-21694, CVE-2025-21697, CVE-2025-21699

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7421-1

Topics%20covered

Topics Covered

security advisory kernel update Ubuntu system compromise cloud security Azure

Package Information

https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1086.95~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1086.95~20.04.1.1

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