DEBIAN-CVE-2026-43197

In the Linux kernel, the following vulnerability has been resolved:  netconsole: avoid OOB reads, msg is not nul-terminated  msg passed to netconsole from the console subsystem is not guaranteed to be nul-terminated. Before recent commit 7eab73b18630 ("netconsole: convert to NBCON console infrastructure") the message would be placed in printksharedpbufs, a static global buffer, so KASAN had harder time catching OOB accesses. Now we see:      printk: console [netconext0] enabled     BUG: KASAN: slab-out-of-bounds in string+0x1f7/0x240     Read of size 1 at addr ffff88813b6d4c00 by task pr/netconext0/594      CPU: 65 UID: 0 PID: 594 Comm: pr/netconext0 Not tainted 6.19.0-11754-g4246fd6547c9     Call Trace:      kasanreport+0xe4/0x120      string+0x1f7/0x240      vsnprintf+0x655/0xba0      scnprintf+0xba/0x120      netconsolewrite+0x3fe/0xa10      nbconemitnextrecord+0x46e/0x860      nbconkthreadfunc+0x623/0x750      Allocated by task 1:      nbconalloc+0x1ea/0x450      registerconsole+0x26b/0xe10      init_netconsole+0xbb0/0xda0      The buggy address belongs to the object at ffff88813b6d4000                 which belongs to the cache kmalloc-4k of size 4096     The buggy address is located 0 bytes to the right of                 allocated 3072-byte region [ffff88813b6d4000, ffff88813b6d4c00)