CVE-2026-43253

Katalog CVE

CVSS 7.5 · High EPSS 0,49%

Kerentanan Improper Locking pada linux kernel. Skor CVSS 3.1 7.5 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: move wait_on_sem() out of spinlock With iommu.strict=1, the existing completion wait path can cause soft lockups under stressed environment, as wait_on_sem() busy-waits under the spinlock with interrupts disabled. Move the completion wait in iommu_completion_wait() out of the spinlock. wait_on_sem() only polls the hardware-updated cmd_sem and does not require iommu->lock, so holding the lock during the busy wait unnecessarily increases contention and extends the time with interrupts disabled.

Rincian

Terbit di NVD

6 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-667: Improper Locking

EPSS (30 hari)

0,49% peluang dieksploitasi; lebih tinggi dari 40,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/496269d12072ecb219826485bdbec70c92a8eef5 patch
• https://git.kernel.org/stable/c/715c263119fd1b918a9fcbd8a36ea5b604a46324 patch
• https://git.kernel.org/stable/c/d2a0cac10597068567d336e85fa3cbdbe8ca62bf patch
• https://git.kernel.org/stable/c/e15768e68820142077bbca402d8e902f64ade1b0 patch
• https://git.kernel.org/stable/c/f2f65b28d802a667119147444ec2ae33eebf9a58 patch