CVE-2026-72225

Katalog CVE

CVSS 7.8 · High EPSS 0,18%

Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit() jbd2_journal_initialize_fast_commit() validates journal capacity by checking (journal->j_last - num_fc_blks < JBD2_MIN_JOURNAL_BLOCKS). Both j_last and num_fc_blks are unsigned, so when num_fc_blks exceeds j_last the subtraction wraps to a large value, bypassing the bounds check. The resulting underflow corrupts j_last, j_fc_first, and j_free, leading to journal abort. Fix by checking num_fc_blks against j_last before the subtraction, returning -EFSCORRUPTED.

Rincian

Terbit di NVD

15 Agustus 2026

Terakhir diubah

23 Agustus 2026

Status NVD

Received

CVSS 3.1

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

EPSS (30 hari)

0,18% peluang dieksploitasi; lebih tinggi dari 6,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/289a2ca0c9b7eae74f93fc213b0b971669b8683d
• https://git.kernel.org/stable/c/4450dcaadf7d4aae8b6e4223b5d6ee4eb77097a9
• https://git.kernel.org/stable/c/4b48dcb88bb9117e3d3f051175a9a8b7cff7f8b6
• https://git.kernel.org/stable/c/78955fdce8ff654e6d33a2fa90882a1e7eb26330
• https://git.kernel.org/stable/c/a58fc10adf503969fec2007b5afe8987258046c4
• https://git.kernel.org/stable/c/aa90f00932bf572d6ef284c977c2a60b39c13bd6
• https://git.kernel.org/stable/c/e144ad0250f77e23e28949587b8b57e40dc3b512
• https://git.kernel.org/stable/c/fb9b49618ed7296ebfad62a3835da8945f727001