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CVE-2025-40046
Published: Oct 28, 2025
Modified: May 11, 2026
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected 6699ec9a23f85f1764183430209c741847c45f12 - < 8bcc9eaf1b19f1a7029cba19f6bd4122b40f6c4faffected 6699ec9a23f85f1764183430209c741847c45f12 - < 09cfd3c52ea76f43b3cb15e570aeddf633d65e80 |
Linux | Linux | affected 6.15unaffected 0 - < 6.15unaffected 6.17.3 - <= 6.17.*unaffected 6.18 - <= * |
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