What’s Vulnerable › Vulnerabilities

CVE-2024-53109: nommu: pass NULL argument to vma_iter_prealloc()

• 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: 2024-12-02 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: nommu: pass NULL argument to vma_iter_prealloc() When deleting a vma entry from a maple tree, it has to pass NULL to vma_iter_prealloc() in order to calculate internal state of the tree, but it passed a wrong argument. As a result, nommu kernels crashed upon accessing a vma iterator, such as acct_collect() reading the size of vma entries after do_munmap(). This commit fixes this issue by passing a right argument to the preallocation call.

Affected products

• Linux kernel: from 6.6 before 6.6.63; from 6.7 before 6.11.10; 6.12-rc1, 6.12-rc2, 6.12-rc3, 6.12-rc4, 6.12-rc5, 6.12-rc6 (+1) — fixed in 6.11.10, 6.6.63

How to fix

Upgrade to a fixed version: Linux kernel 6.11.10, 6.6.63. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/247d720b2c5d22f7281437fd6054a138256986ba
• https://git.kernel.org/stable/c/8bbf0ab631cdf1dade6745f137cff98751e6ced7
• https://git.kernel.org/stable/c/aceaf33b7666b72dfb86e0aa977be81e3bcbc727

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