Use-after-free in Linux kernel - CVE-2024-47676

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Main Vulnerability Database Vulnerabilities #VU98901

Use-after-free in Linux kernel - CVE-2024-47676

Published: October 22, 2024 / Updated: May 12, 2025


Vulnerability identifier: #VU98901
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-47676
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the vmf_anon_prepare(), hugetlb_no_page() and hugetlb_vma_unlock_read() functions in mm/hugetlb.c. A local user can escalate privileges on the system.


Affected software

Linux kernel
Ubuntu
linux-image-6.11.0-18-generic (Ubuntu package)
linux-image-6.11.0-18-generic-64k (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-generic-64k (Ubuntu package)
linux-image-generic-64k-hwe-24.04 (Ubuntu package)
linux-image-generic-hwe-24.04 (Ubuntu package)
linux-image-virtual-hwe-24.04 (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-oem-24.04 (Ubuntu package)
linux-image-oem-24.04a (Ubuntu package)
linux-image-realtime-hwe-24.04 (Ubuntu package)
linux-image-6.11.0-1005-realtime (Ubuntu package)
linux-image-realtime (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-6.11.0-1008-raspi (Ubuntu package)
linux-image-6.11.0-1009-azure (Ubuntu package)
linux-image-6.11.0-1009-azure-fde (Ubuntu package)
linux-image-6.11.0-1009-gcp (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-azure-fde (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-6.11.0-1009-aws (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-6.11.0-1010-lowlatency-64k (Ubuntu package)
linux-image-lowlatency-64k (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-6.11.0-1010-lowlatency (Ubuntu package)
linux-image-6.11.0-1011-oracle-64k (Ubuntu package)
linux-image-6.11.0-1011-oracle (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-oracle-64k (Ubuntu package)
linux-image-6.11.0-1015-oem (Ubuntu package)
linux-image-oem-24.04b (Ubuntu package)

How to mitigate CVE-2024-47676

Install update from vendor's website.

Linux kernel - addressed in versions 6.10.13, 6.11.2, 6.12
linux-image-6.11.0-18-generic (Ubuntu package) - update to 6.11.0-18.18
linux-image-6.11.0-18-generic-64k (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-64k (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-64k-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-generic-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-virtual-hwe-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-virtual (Ubuntu package) - update to 6.11.0-18.18
linux-image-oem-24.04 (Ubuntu package) - update to 6.11.0-18.18
linux-image-oem-24.04a (Ubuntu package) - update to 6.11.0-18.18
linux-image-realtime-hwe-24.04 (Ubuntu package) - update to 6.11.0-1005.5
linux-image-6.11.0-1005-realtime (Ubuntu package) - update to 6.11.0-1005.5
linux-image-realtime (Ubuntu package) - update to 6.11.0-1005.5
linux-image-raspi (Ubuntu package) - update to 6.11.0-1008.8
linux-image-6.11.0-1008-raspi (Ubuntu package) - update to 6.11.0-1008.8
linux-image-6.11.0-1009-azure (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-azure-fde (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-gcp (Ubuntu package) - update to 6.11.0-1009.9
linux-image-gcp (Ubuntu package) - update to 6.11.0-1009.9
linux-image-azure-fde (Ubuntu package) - update to 6.11.0-1009.9
linux-image-azure (Ubuntu package) - update to 6.11.0-1009.9
linux-image-6.11.0-1009-aws (Ubuntu package) - update to 6.11.0-1009.10
linux-image-aws (Ubuntu package) - update to 6.11.0-1009.10
linux-image-6.11.0-1010-lowlatency-64k (Ubuntu package) - update to 6.11.0-1010.11
linux-image-lowlatency-64k (Ubuntu package) - update to 6.11.0-1010.11
linux-image-lowlatency (Ubuntu package) - update to 6.11.0-1010.11
linux-image-6.11.0-1010-lowlatency (Ubuntu package) - update to 6.11.0-1010.11
linux-image-6.11.0-1011-oracle-64k (Ubuntu package) - update to 6.11.0-1011.12
linux-image-6.11.0-1011-oracle (Ubuntu package) - update to 6.11.0-1011.12
linux-image-oracle (Ubuntu package) - update to 6.11.0-1011.12
linux-image-oracle-64k (Ubuntu package) - update to 6.11.0-1011.12
linux-image-6.11.0-1015-oem (Ubuntu package) - update to 6.11.0-1015.15
linux-image-oem-24.04b (Ubuntu package) - update to 6.11.0-1015.15

External References

Related Security Bulletins