CVE-2024-26983: bootconfig: use memblock_free_late to free xbc memory to buddy

Published May 1, 2024
·
Updated

bootconfig: use memblockfreelate to free xbc memory to buddy

Affected Software

147 affected componentsFixes available
Linux Linux kernel>=5.15<6.1.88
Linux Linux kernel>=6.2<6.6.29
Linux Linux kernel>=6.7<6.8.8
Linux Linux kernel=6.9-rc1
Linux Linux kernel=6.9-rc2
Linux Linux kernel=6.9-rc3
Linux Linux kernel=6.9-rc4
Microsoft cbl2 kernel 5.15.186.1-1
Microsoft azl3 hyperv-daemons 6.6.35.1-1
Patch available
Microsoft azl3 hyperv-daemons 6.6.22.1-2
Patch available
ubuntu/linux-hwe-edge*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-oem*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.15*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.15*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.15*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.15*
ubuntu/linux-hwe-5.8*
ubuntu/linux-ibm-5.15*
ubuntu/linux-intel-5.13*
ubuntu/linux-intel-iotg-5.15*
ubuntu/linux-lowlatency-hwe-5.15*
ubuntu/linux-nvidia-tegra-5.15*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.15*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.15*
ubuntu/linux-riscv-5.8*
ubuntu/linux*
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws*
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-aws-6.8<6.8.0-1011.12~22.04.1
6.8.0-1011.12~22.04.1
ubuntu/linux-azure*
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-6.8<6.8.0-1010.10~22.04.1
6.8.0-1010.10~22.04.1
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp*
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke*
ubuntu/linux-gkeop*
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg*
ubuntu/linux-kvm*
ubuntu/linux-lowlatency*
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia*
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-nvidia-6.8<6.8.0-1009.9~22.04.1
6.8.0-1009.9~22.04.1
ubuntu/linux-nvidia-tegra*
ubuntu/linux-nvidia-tegra-igx*
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle*
ubuntu/linux-oracle-6.5*
ubuntu/linux-oracle-6.8<6.8.0-1008.8~22.04.1
6.8.0-1008.8~22.04.1
ubuntu/linux-raspi*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-xilinx-zynqmp*
ubuntu/linux-bluefield*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<6.8.0-38.38
6.8.0-38.38
ubuntu/linux-aws<6.8.0-1011.12
6.8.0-1011.12
ubuntu/linux-azure<6.8.0-1010.10
6.8.0-1010.10
ubuntu/linux-gcp<6.8.0-1010.11
6.8.0-1010.11
ubuntu/linux-gke<6.8.0-1006.9
6.8.0-1006.9
ubuntu/linux-ibm<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-intel<6.8.0-1007.14
6.8.0-1007.14
ubuntu/linux-lowlatency<6.8.0-38.38.1
6.8.0-38.38.1
ubuntu/linux-nvidia<6.8.0-1009.9
6.8.0-1009.9
ubuntu/linux-oem-6.8<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-oracle<6.8.0-1008.8
6.8.0-1008.8
ubuntu/linux-raspi<6.8.0-1007.7
6.8.0-1007.7
ubuntu/linux-riscv<6.8.0-38.38.1
6.8.0-38.38.1
ubuntu/linux-raspi-realtime<6.8.0-2006.6
6.8.0-2006.6
ubuntu/linux-realtime<6.8.1-1004.4
6.8.1-1004.4
debian/linux<6.1.90-1
6.1.90-1
debian/linux<6.8.9-1
6.8.9-1
debian/linux<6.8.9-1
6.8.9-1
debian/linux
6.1.176-16.1.190-16.12.107-16.12.115-27.2.12-17.2.15-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-aws-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1011.12~22.04.1
  2. Upgrade

    Upgrade ubuntu/linux-azure-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.10~22.04.1
  3. Upgrade

    Upgrade ubuntu/linux-nvidia-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1009.9~22.04.1
  4. Upgrade

    Upgrade ubuntu/linux-oracle-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8~22.04.1
  5. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38
  6. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 6.8.0-1011.12
  7. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.10
  8. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 6.8.0-1010.11
  9. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 6.8.0-1006.9
  10. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  11. Upgrade

    Upgrade ubuntu/linux-intel to a version that resolves this vulnerability.

    Fixed in 6.8.0-1007.14
  12. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38.1
  13. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 6.8.0-1009.9
  14. Upgrade

    Upgrade ubuntu/linux-oem-6.8 to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  15. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 6.8.0-1008.8
  16. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 6.8.0-1007.7
  17. Upgrade

    Upgrade ubuntu/linux-riscv to a version that resolves this vulnerability.

    Fixed in 6.8.0-38.38.1
  18. Upgrade

    Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.0-2006.6
  19. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 6.8.1-1004.4
  20. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.90-1
  21. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.8.9-1
  22. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
  23. Configuration

    Update the bootconfig xbc memory free logic: call memblock_free() in the early xbc init error rewind path, and call memblock_free_late() in the xbc exit path to free xbc memory to the buddy allocator (instead of freeing it back to memblock / using memblock_free at xbc_exit that can cause UAF).

    Linux kernel (bootconfig/xbC) Use memblock_free() in early xbc init error rewind path and memblock_free_late() in xbc_exit() = memblock_free (early rewind path); memblock_free_late (xbc_exit path)

Event History

May 1, 2024
CVE Published
via MITRE·05:27 AM
Data Sourced
via MITRE·05:27 AM
DescriptionSeverity
Data Sourced
via OSV·06:15 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·06:15 AM
RemedyDescriptionSeverityWeaknessAffected Software
May 13, 2024
Data Sourced
via Microsoft·12:00 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2024-26983?

CVE-2024-26983 has a severity rating that could potentially allow unauthorized memory access.

2

How do I fix CVE-2024-26983?

To remediate CVE-2024-26983, upgrade your Linux Kernel to the appropriate patched version, such as 5.10.223-1 or 6.12.11-1.

3

Which versions of the Linux Kernel are affected by CVE-2024-26983?

CVE-2024-26983 affects Linux Kernel versions between 5.15 and 6.1.88, 6.2 and 6.6.29, and 6.7 and 6.8.8, as well as multiple release candidates in the 6.9 series.

4

Is CVE-2024-26983 a remote code execution vulnerability?

No, CVE-2024-26983 is not primarily classified as a remote code execution vulnerability.

5

What kind of impact could CVE-2024-26983 have on systems?

CVE-2024-26983 could lead to memory mismanagement that could affect system stability and performance.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203