Answer in brief
CVE-2025-23154 records a Medium severity (CVSS 5.5) vulnerability in io_uring/net: fix io_req_post_cqe abuse by send bundle. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a05d1f625c7aa681d8816bc0f10089289ad07aad <b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5 || >=a05d1f625c7aa681d8816bc0f10089289ad07aad <7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378 || >=a05d1f625c7aa681d8816bc0f10089289ad07aad <9aa804e6b9696998308095fb9d335046a71550f1 || >=a05d1f625c7aa681d8816bc0f10089289ad07aad <6889ae1b4df1579bcdffef023e2ea9a982565dff | b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5, 7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378, 9aa804e6b9696998308095fb9d335046a71550f1, 6889ae1b4df1579bcdffef023e2ea9a982565dff |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
May 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
In the Linux kernel, the following vulnerability has been resolved: io_uring/net: fix io_req_post_cqe abuse by send bundle [ 114.987980][ T5313] WARNING: CPU: 6 PID: 5313 at io_uring/io_uring.c:872 io_req_post_cqe+0x12e/0x4f0 [ 114.991597][ T5313] RIP: 0010:io_req_post_cqe+0x12e/0x4f0 [ 115.001880][ T5313] Call Trace: [ 115.002222][ T5313] <TASK> [ 115.007813][ T5313] io_send+0x4fe/0x10f0 [ 115.009317][ T5313] io_issue_sqe+0x1a6/0x1740 [ 115.012094][ T5313] io_wq_submit_work+0x38b/0xed0 [ 115.013223][ T5313] io_worker_handle_work+0x62a/0x1600 [ 115.013876][ T5313] io_wq_worker+0x34f/0xdf0 As the comment states, io_req_post_cqe() should only be used by multishot requests, i.e. REQ_F_APOLL_MULTISHOT, which bundled sends are not. Add a flag signifying whether a request wants to post multiple CQEs. Eventually REQ_F_APOLL_MULTISHOT should imply the new flag, but that's left out for simplicity.
Quoted source text, attributed separately from HOL analysis.