CVE-2026-23069: Linux, грешка в паметта

Описание

Оригинално описание

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]

Засегнати продукти

• Linux Linux: 06a8fc78367d070720af960dcecec917d3ae5f3b преди d96de882d6b99955604669d962ae14e94b66a551; 06a8fc78367d070720af960dcecec917d3ae5f3b преди 02f9af192b98d15883c70dd41ac76d1b0217c899; 06a8fc78367d070720af960dcecec917d3ae5f3b преди d05bc313788f0684b27f0f5b60c52a844669b542; 06a8fc78367d070720af960dcecec917d3ae5f3b преди ec0f1b3da8061be3173d1c39faaf9504f91942c3; 06a8fc78367d070720af960dcecec917d3ae5f3b преди 3ef3d52a1a9860d094395c7a3e593f3aa26ff012
• Linux Linux: 4.8; преди 4.8; 6.1.162 до 6.1.*; 6.6.122 до 6.6.*; 6.12.68 до 6.12.*; 6.18.8 до 6.18.*; 6.19 до *

Вид слабост

• CWE-190 Целочислено препълване отгоре

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-23069
• https://nvd.nist.gov/vuln/detail/CVE-2026-23069
• https://git.kernel.org/stable/c/d96de882d6b99955604669d962ae14e94b66a551
• https://git.kernel.org/stable/c/02f9af192b98d15883c70dd41ac76d1b0217c899
• https://git.kernel.org/stable/c/d05bc313788f0684b27f0f5b60c52a844669b542
• https://git.kernel.org/stable/c/ec0f1b3da8061be3173d1c39faaf9504f91942c3
• https://git.kernel.org/stable/c/3ef3d52a1a9860d094395c7a3e593f3aa26ff012