Shodan
Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-31438

In the Linux kernel, the following vulnerability has been resolved: netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators When a process crashes and the kernel writes a core dump to a 9P filesystem, __kernel_write() creates an ITER_KVEC iterator. This iterator reaches netfs_limit_iter() via netfs_unbuffered_write(), which only handles ITER_FOLIOQ, ITER_BVEC and ITER_XARRAY iterator types, hitting the BUG() for any other type. Fix this by adding netfs_limit_kvec() following the same pattern as netfs_limit_bvec(), since both kvec and bvec are simple segment arrays with pointer and length fields. Dispatch it from netfs_limit_iter() when the iterator type is ITER_KVEC.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 2.4%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2026-31438


Products
Pricing
Contact Us

Shodan ® - All rights reserved