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Vulnerability · Published May 1, 2025 · Assigned by Linux

CVE-2025-23154io_uring/net: fix io_req_post_cqe abuse by send bundle

Medium 5.5

In plain English

A medium-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 89.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.12.25-1DEBIAN-CVE-2025-23154
Debian:14linux6.12.25-1DEBIAN-CVE-2025-23154
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-23154
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-23154
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-23154

Affected products (as reported)

VendorProductVersions
Linux Linux a05d1f625c7aa681d8816bc0f10089289ad07aad – before b7c6d081c19a5e11bbd77bb97a62cff2b6b21cb5a05d1f625c7aa681d8816bc0f10089289ad07aad – before 7888c9fc0b2d3636f2e821ed1ad3c6920fa8e378a05d1f625c7aa681d8816bc0f10089289ad07aad – before 9aa804e6b9696998308095fb9d335046a71550f1a05d1f625c7aa681d8816bc0f10089289ad07aad – before 6889ae1b4df1579bcdffef023e2ea9a982565dff
Linux Linux 6.10

References