CVE-2025-23154io_uring/net: fix io_req_post_cqe abuse by send bundle
- 5.5MediumCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 4 months later
· 4 months later
Published
- 18 months later
· 18 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected a05d1f625c7aa681d8816bc0f10089289ad07aad – < b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5
- affected a05d1f625c7aa681d8816bc0f10089289ad07aad – < 7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378
- affected a05d1f625c7aa681d8816bc0f10089289ad07aad – < 9aa804e6b9696998308095fb9d335046a71550f1
- affected a05d1f625c7aa681d8816bc0f10089289ad07aad – < 6889ae1b4df1579bcdffef023e2ea9a982565dff
- affected 6.10
- unaffected < 6.10
- unaffected 6.12.24 – ≤ 6.12.*
- unaffected 6.13.12 – ≤ 6.13.*
- unaffected 6.14.3 – ≤ 6.14.*
- unaffected 6.15 – ≤ *
References
References4
- https://git.kernel.org/stable/c/b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5 (opens in a new tab)
- https://git.kernel.org/stable/c/7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378 (opens in a new tab)
- https://git.kernel.org/stable/c/9aa804e6b9696998308095fb9d335046a71550f1 (opens in a new tab)
- https://git.kernel.org/stable/c/6889ae1b4df1579bcdffef023e2ea9a982565dff (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-13089 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-23154)Record last updated .