CVE-2025-40046
NoneCVSS
—
EPSS
0.3%
Published
Oct 28, 2025
CISA due date
—
The record
In the Linux kernel, the following vulnerability has been resolved: io_uring/zcrx: fix overshooting recv limit It's reported that sometimes a zcrx request can receive more than was requested. It's caused by io_zcrx_recv_skb() adjusting desc->count for all received buffers including frag lists, but then doing recursive calls to process frag list skbs, which leads to desc->count double accounting and underflow.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Linux | Kernel | 6.15.0 | 6.17.3 |
| openSUSE:Tumbleweed | kernel-source | 0 | 6.17.7-1.1 |
| openSUSE:Tumbleweed | kernel-source-longterm | 0 | 6.18.16-1.1 |
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