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Vulnerability · Published Nov 8, 2024 · Assigned by Linux

CVE-2024-50199mm/swapfile: skip HugeTLB pages for unuse_vma

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 87.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: skip HugeTLB pages for unuse_vma I got a bad pud error and lost a 1GB HugeTLB when calling swapoff. The problem can be reproduced by the following steps: 1. Allocate an anonymous 1GB HugeTLB and some other anonymous memory. 2. Swapout the above anonymous memory. 3. run swapoff and we will get a bad pud error in kernel message: mm/pgtable-generic.c:42: bad pud 00000000743d215d(84000001400000e7) We can tell that pud_clear_bad is called by pud_none_or_clear_bad in unuse_pud_range() by ftrace. And therefore the HugeTLB pages will never be freed because we lost it from page table. We can skip HugeTLB pages for unuse_vma to fix it.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.115-1DEBIAN-CVE-2024-50199
Debian:13linux6.11.5-1DEBIAN-CVE-2024-50199
Debian:14linux6.11.5-1DEBIAN-CVE-2024-50199
Ubuntu:22.04:LTSlinux5.15.0-133.144UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux6.8.0-56.58UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-aws5.15.0-1078.85UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-aws6.8.0-1025.27UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure5.15.0-1081.90UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-azure6.8.0-1025.30UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1025.30~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1081.90.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1014.15UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gcp5.15.0-1077.86UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-gcp6.8.0-1026.28UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1026.28~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gke5.15.0-1075.81UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-gke6.8.0-1021.25UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1060.68UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1008.10UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-57.59~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-ibm5.15.0-1070.73UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-ibm6.8.0-1022.22UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1023.23~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1073.79UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-kvm5.15.0-1076.81UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-133.143UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-56.58.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1072.73UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1024.27UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1024.27~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1024.27.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1033.33UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1004.4UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1021.21UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1024.24UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oracle5.15.0-1075.81UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-oracle6.8.0-1022.23UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1022.23~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-raspi5.15.0-1072.75UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-riscv6.8.0-56.58.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-56.58.1~22.04.1UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-50199
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-50199
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1044.48UBUNTU-CVE-2024-50199

Affected products (as reported)

VendorProductVersions
Linux Linux 0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before ba7f982cdb37ff5a7739dec85d7325ea66fc14960fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before 417d5838ca73c6331ae2fe692fab6c25c00d9a0b0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before e41710f5a61aca9d6baaa8f53908a927dd9e7aa70fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before 6ec0fe3756f941f42f8c57156b8bdf2877b2ebaf0fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before bed2b9037806c62166a0ef9a559a1e7e3e1275b80fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before eb66a833cdd2f7302ee05d05e0fa12a2ca32eb870fe6e20b9c4c53b3e97096ee73a0857f60aad43f – before 7528c4fb1237512ee18049f852f014eba80bbe8d
Linux Linux 2.6.36

References