CVE-2026-23069

Katalog CVE

CVSS 5.5 · Medium EPSS 0,15%

Kerentanan Integer Underflow (Wrap or Wraparound) pada linux kernel. Skor CVSS 3.1 5.5 (Medium) menurut NVD.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential underflow in virtio_transport_get_credit() The credit calculation in virtio_transport_get_credit() uses unsigned arithmetic: ret = vvs->peer_buf_alloc - (vvs->tx_cnt - vvs->peer_fwd_cnt); If the peer shrinks its advertised buffer (peer_buf_alloc) while bytes are in flight, the subtraction can underflow and produce a large positive value, potentially allowing more data to be queued than the peer can handle. Reuse virtio_transport_has_space() which already handles this case and add a comment to make it clear why we are doing that. [Stefano: use virtio_transport_has_space() instead of duplicating the code] [Stefano: tweak the commit message]

Rincian

Terbit di NVD

4 Februari 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-191: Integer Underflow (Wrap or Wraparound)

EPSS (30 hari)

0,15% peluang dieksploitasi; lebih tinggi dari 3,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/02f9af192b98d15883c70dd41ac76d1b0217c899 patch
• https://git.kernel.org/stable/c/3ef3d52a1a9860d094395c7a3e593f3aa26ff012 patch
• https://git.kernel.org/stable/c/d05bc313788f0684b27f0f5b60c52a844669b542 patch
• https://git.kernel.org/stable/c/d96de882d6b99955604669d962ae14e94b66a551 patch
• https://git.kernel.org/stable/c/ec0f1b3da8061be3173d1c39faaf9504f91942c3 patch