Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-54518: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache (bsc#1264013). - CVE-2026-46300: net: skbuff: propagate shared-frag marker through pskb_copy() (bsc#1265209). - CVE-2026-43284: xfrm: esp: avoid in-place decrypt on shared skb frags (bsc#1264449). - CVE-2026-43500: rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present (aka Dirty Frag) (bsc#1264450) - CVE-2026-46333: ptrace: Logic bug in the Linux kernel's __ptrace_may_access() function (bsc#1265308). The following non security issues were fixed: - io-wq: check that the predecessor is hashed in io_wq_remove_pending() (git-fixes).