{"id":"CVE-2025-23154","title":"io_uring/net: fix io_req_post_cqe abuse by send bundle","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: fix io_req_post_cqe abuse by send bundle\n\n[  114.987980][ T5313] WARNING: CPU: 6 PID: 5313 at io_uring/io_uring.c:872 io_req_post_cqe+0x12e/0x4f0\n[  114.9…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5","Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378","Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 9aa804e6b9696998308095fb9d335046a71550f1","Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 6889ae1b4df1579bcdffef023e2ea9a982565dff","Linux 6.10"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T20:39:45.990568Z"},"published":"2025-05-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:41:52.440Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-23154","references":[{"url":"https://git.kernel.org/stable/c/b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5"},{"url":"https://git.kernel.org/stable/c/7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378"},{"url":"https://git.kernel.org/stable/c/9aa804e6b9696998308095fb9d335046a71550f1"},{"url":"https://git.kernel.org/stable/c/6889ae1b4df1579bcdffef023e2ea9a982565dff"}],"tags":["cve.org"],"epss":0.00202,"epssPercentile":0.1014,"ingestedAt":"2026-11-05T22:38:31.867Z","slug":"CVE-2025-23154","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: fix io_req_post_cqe abuse by send bundle\n\n[  114.987980][ T5313] WARNING: CPU: 6 PID: 5313 at io_uring/io_uring.c:872 io_req_post_cqe+0x12e/0x4f0\n[  114.991597][ T5313] RIP: 0010:io_req_post_cqe+0x12e/0x4f0\n[  115.001880][ T5313] Call Trace:\n[  115.002222][ T5313]  <TASK>\n[  115.007813][ T5313]  io_send+0x4fe/0x10f0\n[  115.009317][ T5313]  io_issue_sqe+0x1a6/0x1740\n[  115.012094][ T5313]  io_wq_submit_work+0x38b/0xed0\n[  115.013223][ T5313]  io_worker_handle_work+0x62a/0x1600\n[  115.013876][ T5313]  io_wq_worker+0x34f/0xdf0\n\nAs the comment states, io_req_post_cqe() should only be used by\nmultishot requests, i.e. REQ_F_APOLL_MULTISHOT, which bundled sends are\nnot. Add a flag signifying whether a request wants to post multiple\nCQEs. Eventually REQ_F_APOLL_MULTISHOT should imply the new flag, but\nthat's left out for simplicity.\n\n## Affected\n\n- `Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5`\n- `Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378`\n- `Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 9aa804e6b9696998308095fb9d335046a71550f1`\n- `Linux >= a05d1f625c7aa681d8816bc0f10089289ad07aad < 6889ae1b4df1579bcdffef023e2ea9a982565dff`\n- `Linux 6.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}