In the Linux kernel, the following vulnerability has been resolved:
io_uring/futex: ensure io_futex_wait() cleans up properly on failure
The io_futex_data is allocated upfront and assigned to the io_kiocb
async_data field, but the request isn't marked with REQ_F_ASYNC_DATA
at that point. Those two should always go together, as the flag tells
io_uring whether the field is valid or not.
Additionally, on failure cleanup, the futex handler frees the data but
does not clear ->async_data. Clear the data and the flag in the error
path as well.
Thanks to Trend Micro Zero Day Initiative and particularly ReDress for
reporting this.
References
Configurations
Configuration 1 (hide)
|
History
25 Nov 2025, 21:31
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-416 | |
| References | () https://git.kernel.org/stable/c/508c1314b342b78591f51c4b5dadee31a88335df - Patch | |
| References | () https://git.kernel.org/stable/c/d34c04152df517c59979b4bf2a47f491e06d3256 - Patch | |
| References | () https://git.kernel.org/stable/c/d9f93172820a53ab42c4b0e5e65291f4f9d00ad2 - Patch | |
| References | () https://www.zerodayinitiative.com/advisories/ZDI-25-915/ - Third Party Advisory |
Information
Published : 2025-09-05 18:15
Updated : 2025-11-25 21:31
NVD link : CVE-2025-39698
Mitre link : CVE-2025-39698
CVE.ORG link : CVE-2025-39698
JSON object : View
Products Affected
linux
- linux_kernel