CVE-2026-31589

Katalog CVE

CVSS 9.8 · Critical EPSS 0,65%

Kerentanan Use After Free pada linux kernel. Skor CVSS 3.1 9.8 (Critical) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: mm: call ->free_folio() directly in folio_unmap_invalidate() We can only call filemap_free_folio() if we have a reference to (or hold a lock on) the mapping. Otherwise, we've already removed the folio from the mapping so it no longer pins the mapping and the mapping can be removed, causing a use-after-free when accessing mapping->a_ops. Follow the same pattern as __remove_mapping() and load the free_folio function pointer before dropping the lock on the mapping. That lets us make filemap_free_folio() static as this was the only caller outside filemap.c.

Rincian

Terbit di NVD

24 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,65% peluang dieksploitasi; lebih tinggi dari 49,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/615d9bb2ccad42f9e21d837431e401db2e471195 patch
• https://git.kernel.org/stable/c/b667df39d98a7a24be7c2a40ff0863dac1ad2cd7 patch
• https://git.kernel.org/stable/c/c330e65ea59c4805d6ab6757c4ddfe8c63acef31 patch
• https://git.kernel.org/stable/c/efc52947247a21bbf79059539bbbd40f4ea76f00