In the Linux kernel, the following vulnerability has been resolved:
MIPS: pgalloc: fix memory leak caused by pgd_free()
pgd page is freed by generic implementation pgd_free() since commit f9cb654cb550 ("asm-generic: pgalloc: provide generic pgd_free()"), however, there are scenarios that the system uses more than one page as the pgd table, in such cases the generic implementation pgd_free() won't be applicable anymore. For example, when PAGE_SIZE_4KB is enabled and MIPS_VA_BITS_48 is not enabled in a 64bit system, the macro "PGD_ORDER" will be set as "1", which will cause allocating two pages as the pgd table. Well, at the same time, the generic implementation pgd_free() just free one pgd page, which will result in the memory leak.
The memory leak can be easily detected by executing shell command: "while true; do ls > /dev/null; grep MemFree /proc/meminfo; done"
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfoUpgrade kernel-livepatch-5.10.112-108.499Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-toolsUpgrade perfUpgrade perf-debuginfoUpgrade python-perfUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-aarch64 | May 22, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel | Jun 11, 2025 | Feb 26, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade bpftoolUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel-toolsUpgrade kernelUpgrade kernel-abi-stablelists | Jun 11, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-intel-iotg-5.15Upgrade linux-gcpUpgrade linux-realtimeUpgrade linux-awsUpgrade linux-lowlatency-hwe-5.15Upgrade linux-azure-5.15Upgrade linux-gkeUpgrade linux-lowlatencyUpgrade linux-kvmUpgrade linux-raspiUpgrade linux-azureUpgrade linuxUpgrade linux-intel-iotgUpgrade linux-oracleUpgrade linux-hwe-5.15Upgrade linux-ibm | Mar 19, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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