CVE-2025-21836: linux kernel from 5.19 (inclusive), before 6.6.79 (exclusive), from 6.7 (inclusive), before 6.12.16 (exclusive), from…

Affected technology

linux kernel · from 5.19 (inclusive), before 6.6.79 (exclusive)
linux

linux kernel · from 6.7 (inclusive), before 6.12.16 (exclusive)
linux

linux kernel · from 6.13 (inclusive), before 6.13.4 (exclusive)
linux

linux kernel · 6.14 · update rc1
linux

linux kernel · 6.14 · update rc2
linux

Linux · 2fcabce2d7d34f69a888146dab15b36a917f09d4 to before 146a185f6c05ee263db715f860620606303c4633, 2fcabce2d7d34f69a888146dab15b36a917f09d4 to before 7d0dc28dae836caf7645fef62a10befc624dd17b, 2fcabce2d7d34f69a888146dab15b36a917f09d4 to before 2a5febbef40ce968e295a7aeaa5d5cbd9e3e5ad4, 2fcabce2d7d34f69a888146dab15b36a917f09d4 to before 8802766324e1f5d414a81ac43365c20142e85603
Linux

Linux · 5.19
Linux

Component: Not specified by the source
File: io_uring/kbuf.c

Attack conditions (Source advisory, CVSS 3.1): Local · Low privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

Source advisory’s CVSS 3.1 assessment (base score 7.8/10) rates confidentiality, integrity and availability impact as high. NVD’s CVSS 3.1 assessment (base score 5.5/10) rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.