CVE-2026-93798

Katalog CVE

CVSS 7.8 · High EPSS 0,13%

Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix reloc root cleanup in merge_reloc_roots() If the root we got has zero root refs in its root item, we are resetting the root's ->reloc_root without using barriers like we do everywhere else. Sashiko complained about this while reviewing another patch, and it's correct (see the Link tag below). Also, we should not clear BTRFS_ROOT_DEAD_RELOC_TREE from the root unless the root points to the reloc root we have. Fix this by using clear_reloc_root(), which issues the memory barrier after setting the root's ->reloc_root to NULL and before clearing the bit BTRFS_ROOT_DEAD_RELOC_TREE from the root.

Rincian

Terbit di NVD

24 September 2026

Terakhir diubah

3 Oktober 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)

0,13% peluang dieksploitasi; lebih tinggi dari 2,2% 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/0bc25f0a2d1b3e0a691431c4d7aef36afcd527c5
• https://git.kernel.org/stable/c/29531470b1bf1e8bd2df4941fe913106edbca615
• https://git.kernel.org/stable/c/415f8665a969d3c906e4fd7c90fcbb4b357886f6
• https://git.kernel.org/stable/c/63d6b1f04cd91c825329712aa526215ffa5d11ca
• https://git.kernel.org/stable/c/ab48583aa9948205ff9a6470e23dbff74c565e24
• https://git.kernel.org/stable/c/b78fe9563e2d5ae47805f1e5dc722c91fd30e1f8
• https://git.kernel.org/stable/c/ee695a968aa73b1e67ccbf2133dc0e54381d32b2