Threats Tagged 'cve-2026-31493'

CVE-2026-31493 is a vulnerability in Microsoft software related to RDMA/efa where a completion context is used after it has been freed. This use-after-free flaw can lead to undefined behavior or potential security issues. The affected versions explicitly include 2.0 and 3.0. No CVSS score or detailed impact information is provided. There is no indication of known exploits in the wild or available patches at this time.

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths When processing mount options, efivarfs allocates efivarfs_fs_info (sfi) early in fs_context initialization. However, sfi is associated with the superblock and typically freed when the superblock is destroyed. If the fs_context is released (final put) before fill_super is called—such as on error paths or during reconfiguration—the sfi structure would leak, as ownership never transfers to the superblock. Implement the .free callback in efivarfs_context_ops to ensure any allocated sfi is properly freed if the fs_context is torn down before fill_super, preventing this memory leak.