PT-2026-52285 · Linux · Linux

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-53189

NVD

In the Linux kernel, the following vulnerability has been resolved:

mm/huge memory: update file PMD counter before folio put()

split huge pmd locked() updates the file/shmem RSS counter after dropping the PMD mapping's folio reference. If folio put() drops the last reference, mm counter file() can later read freed folio state via folio test swapbacked().

Move the counter update before folio put().

Related Identifiers

CVE-2026-53189

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-53189 · Security Note
• https://git.kernel.org/stable/c/8d878059924f12c1bc24556a92ec56add74de3c8 · Note
• https://git.kernel.org/stable/c/ae9d4caf6f133e884cf5fcda4982c493b35e5194 · Note
• https://git.kernel.org/stable/c/459771c9cf30f378bdbd30fc65d17f7eb931bb59 · Note
• https://git.kernel.org/stable/c/84b3212b166b446faea27ebebb7161405ffceef9 · Note
• https://git.kernel.org/stable/c/5f5b604e1e6bde4e889199168ee80fe8306d06ad · Note
• https://git.kernel.org/stable/c/108963978a681c0c468d279cac2b930c27672877 · Note
• https://git.kernel.org/stable/c/ed5b030931292c94133437ac5e5ff580e498eabd · Note
• https://git.kernel.org/stable/c/6c29a8ba084e89499ca77b947e07ae817f9c16ce · Note