Description of the patch:
This update for the SUSE Linux Enterprise Kernel 6.4.0-42.1 fixes various security issues
The following security issues were fixed:
- CVE-2026-23393: bridge: cfm: Fix race condition in peer_mep deletion (bsc#1260524).
- CVE-2026-31505: iavf: fix out-of-bounds writes in iavf_get_ethtool_stats() (bsc#1263094).
- CVE-2026-31533: net/tls: fix use-after-free in -EBUSY error path of tls_do_encryption (bsc#1262759).
- CVE-2026-31586: mm: blk-cgroup: fix use-after-free in cgwb_release_workfn() (bsc#1263177).
- CVE-2026-31685: netfilter: ip6t_eui64: reject invalid MAC header for all packets (bsc#1263670).
- CVE-2026-43025: netfilter: ctnetlink: ignore explicit helper on new expectations (bsc#1264253).
- CVE-2026-43027: netfilter: nf_conntrack_helper: pass helper to expect cleanup (bsc#1264252).
- CVE-2026-43037: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() (bsc#1265197).
- CVE-2026-43120: RDMA/irdma: Fix double free related to rereg_user_mr (bsc#1264567).
- CVE-2026-43190: netfilter: xt_tcpmss: check remaining length before reading optlen (bsc#1264849).
- CVE-2026-43366: io_uring/kbuf: check if target buffer list is still legacy on recycle (bsc#1265117).
- CVE-2026-43494: RDS zerocopy attack aka PinTheft (bsc#1265945).
- CVE-2026-43501: ipv6: rpl: reserve mac_len headroom when recompressed SRH grows (bsc#1266015).
- CVE-2026-45970: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (bsc#1267206).
- CVE-2026-46120: ip6_gre: Use cached t->net in ip6erspan_changelink() (bsc#1267893).
- CVE-2026-46173: exit: prevent preemption of oopsing TASK_DEAD task (bsc#1267723).
- CVE-2026-46227: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (bsc#1267698).
- CVE-2026-46243: smb: client: reject userspace cifs.spnego descriptions (CIFSwitch) (bsc#1266265).
- CVE-2026-52909: ip6_vti: set netns_immutable on the fallback device (bsc#1268662).
- CVE-2026-52943: net: skbuff: fix missing zerocopy reference in pskb_carve helpers...