CVE-2025-21680

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> pktgen: Avoid out-of-bounds access in get_imix_entries<br /> <br /> Passing a sufficient amount of imix entries leads to invalid access to the<br /> pkt_dev-&gt;imix_entries array because of the incorrect boundary check.<br /> <br /> UBSAN: array-index-out-of-bounds in net/core/pktgen.c:874:24<br /> index 20 is out of range for type &amp;#39;imix_pkt [20]&amp;#39;<br /> CPU: 2 PID: 1210 Comm: bash Not tainted 6.10.0-rc1 #121<br /> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)<br /> Call Trace:<br /> <br /> dump_stack_lvl lib/dump_stack.c:117<br /> __ubsan_handle_out_of_bounds lib/ubsan.c:429<br /> get_imix_entries net/core/pktgen.c:874<br /> pktgen_if_write net/core/pktgen.c:1063<br /> pde_write fs/proc/inode.c:334<br /> proc_reg_write fs/proc/inode.c:346<br /> vfs_write fs/read_write.c:593<br /> ksys_write fs/read_write.c:644<br /> do_syscall_64 arch/x86/entry/common.c:83<br /> entry_SYSCALL_64_after_hwframe arch/x86/entry/entry_64.S:130<br /> <br /> Found by Linux Verification Center (linuxtesting.org) with SVACE.<br /> <br /> [ fp: allow to fill the array completely; minor changelog cleanup ]