DEBIAN-CVE-2026-43011

In the Linux kernel, the following vulnerability has been resolved:  net/x25: Fix potential double free of skb  When allocskb fails in x25queuerxframe it calls kfreeskb(skb) at line 48 and returns 1 (error). This error propagates back through the call chain:  x25queuerxframe returns 1     |     v x25state3machine receives the return value 1 and takes the else branch at line 278, setting queued=0 and returning 0     |     v x25processrxframe returns queued=0     |     v x25backlogrcv at line 452 sees queued=0 and calls kfreeskb(skb) again  This would free the same skb twice. Looking at x25backlogrcv:  net/x25/x25in.c:x25backlogrcv() {     ...     queued = x25processrxframe(sk, skb);     ...     if (!queued)         kfree_skb(skb); }