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Vulnerability · Published Apr 3, 2025 · Assigned by Linux

CVE-2025-22000mm/huge_memory: drop beyond-EOF folios with the right number of refs

Medium 5.5

In plain English

A medium-severity memory leak 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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 91.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: drop beyond-EOF folios with the right number of refs When an after-split folio is large and needs to be dropped due to EOF, folio_put_refs(folio, folio_nr_pages(folio)) should be used to drop all page cache refs. Otherwise, the folio will not be freed, causing memory leak. This leak would happen on a filesystem with blocksize > page_size and a truncate is performed, where the blocksize makes folios split to >0 order ones, causing truncated folios not being freed.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.21-1DEBIAN-CVE-2025-22000
Debian:14linux6.12.21-1DEBIAN-CVE-2025-22000
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1018.18~24.04.1UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1016.16~24.04.1UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-28.28~24.04.1UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.116.11.0-1015.16~24.04.2UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1012.12UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1024.24UBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-22000
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-22000
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-22000

Affected products (as reported)

VendorProductVersions
Linux Linux c010d47f107f609b9f4d6a103b6dfc53889049e9 – before 86368616a9ce51f6b41efa251b6e066893851d67c010d47f107f609b9f4d6a103b6dfc53889049e9 – before 92ad820a1f2d95d5a8d6c2bd3f391bbb068a5f9ec010d47f107f609b9f4d6a103b6dfc53889049e9 – before 14efb4793519d73fb2902bb0ece319b886e4b4b9
Linux Linux 6.9

Weakness: CWE-401 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References