What’s Vulnerable › Vulnerabilities

CVE-2023-53361: LoongArch: mm: Add p?d_leaf() definitions

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-17 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: LoongArch: mm: Add p?d_leaf() definitions When I do LTP test, LTP test case ksm06 caused panic at break_ksm_pmd_entry -> pmd_leaf (Huge page table but False) -> pte_present (panic) The reason is pmd_leaf() is not defined, So like commit 501b81046701 ("mips: mm: add p?d_leaf() definitions") add p?d_leaf() definition for LoongArch.

Affected products

• Linux kernel: from 5.19 before 6.1.53; from 6.2 before 6.4.16; from 6.5 before 6.5.3 — fixed in 6.1.53, 6.4.16, 6.5.3

How to fix

Upgrade to a fixed version: Linux kernel 6.1.53, 6.4.16, 6.5.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/303be4b33562a5b689261ced1616bf16ad49efa7
• https://git.kernel.org/stable/c/593ad636bac41d67bdc44c83c6945015471313fc
• https://git.kernel.org/stable/c/77aaf22a9200b9557793c96debead911b80acc1c
• https://git.kernel.org/stable/c/cc9bf2d62f196ec600f9e6ea3a6ced11f54a2df9

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