Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerabilities have been resolved: net/smc: fixed a warning in smcrxsplice, when calling getpage. smcloregisterdmb allocates DMB buffers using kzalloc, which are later passed to getpage in smcrxsplice. Since kmalloc memory is not page-backed, this triggers...

CVE-2025-40012

CVE-2025-40012 is a Linux kernel vulnerability in net/smc where smc_lo_register_dmb() allocates DMB buffers with kzalloc() and smc_rx_splice() calls get_page() on them; since kzalloc memory isn’t page-backed this triggers WARN_ON_ONCE() and can lead to a use-after-free if memory is released befor...

CVE-2025-40012 net/smc: fix warning in smc_rx_splice() when calling get_page()

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix warning in smcrxsplice when calling getpage smcloregisterdmb allocates DMB buffers with kzalloc, which are later passed to getpage in smcrxsplice. Since kmalloc memory is not page-backed, this triggers WARNONONCE in...