VULNERABILITY INTELLIGENCE
CVE-2025-21836
CVSS score7.8 HIGH
EPSS probability0.25%
CISA KEVNot currently listed
Published2025-03-07
Last modified2026-10-15
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring/kbuf: reallocate buf lists on upgrade IORING_REGISTER_PBUF_RING can reuse an old struct io_buffer_list if it was created for legacy selected buffer and has been emptied. It violates the requirement that most of the field should stay stable after publish. Always reallocate it instead.
Weakness classification
- nvd@nist.gov: NVD-CWE-noinfo