Threats Tagged 'cve-2026-31590'

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-10263: arm64: cputype: Add C1-Premium definitions (bsc#1266290). - CVE-2025-39894: netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm (bsc#1262430). - CVE-2025-40341: futex: Don't leak robust_list pointer on exec race (bsc#1255029). - CVE-2026-23248: perf: Make perf_pmu_unregister() useable (bsc#1259800). - CVE-2026-23394: Revert: "af_unix: Remove lock dance in unix_peek_fds()." (bsc#1260565). - CVE-2026-23451: bonding: prevent potential infinite loop in bond_header_parse() (bsc#1261604). - CVE-2026-31414: netfilter: nf_conntrack_expect: use expect->helper (bsc#1262085). - CVE-2026-31429: net: skb: fix cross-cache free of KFENCE-allocated skb head (bsc#1262392). - CVE-2026-31438: netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators (bsc#1267824). - CVE-2026-31450: ext4: publish jinode after initialization (bsc#1262618). - CVE-2026-31452: ext4: convert inline data to extents when truncate exceeds inline size (bsc#1262620). - CVE-2026-31466: mm/huge_memory: fix folio isn't locked in softleaf_to_folio() (bsc#1267825). - CVE-2026-31469: virtio_net: Fix UAF on dst_ops when IFF_XMIT_DST_RELEASE is cleared and napi_tx is false (bsc#1267816). - CVE-2026-31479: drm/xe: always keep track of remap prev/next (bsc#1262765). - CVE-2026-31492: RDMA/irdma: Initialize free_qp completion before using it (bsc#1262748). - CVE-2026-31495: netfilter: ctnetlink: use netlink policy range checks (bsc#1262798). - CVE-2026-31499: Bluetooth: L2CAP: Fix deadlock in l2cap_conn_del() (bsc#1262674). - CVE-2026-31502: team: fix header_ops type confusion with non-Ethernet ports (bsc#1263072). - CVE-2026-31555: futex: Clear stale exiting pointer in futex_lock_pi() retry path (bsc#1263178). - CVE-2026-31560: spi: spi-dw-dma: fix print error log when wait finish transaction (bsc#1263057). - CVE-2026-31596: ocfs2: handle invalid dinode in ocfs2_group_extend (bsc#1263319). - CVE-2026-31646: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() (bsc#1263796). - CVE-2026-31647: idpf: fix PREEMPT_RT raw/bh spinlock nesting for async VC handling (bsc#1263581). - CVE-2026-31663: xfrm: hold device only for the asynchronous decryption (bsc#1263133). - CVE-2026-31664: xfrm: clear trailing padding in build_polexpire() (bsc#1263578). - CVE-2026-31665: netfilter: nft_ct: fix use-after-free in timeout object destroy (bsc#1263137). - CVE-2026-31670: net: rfkill: prevent unlimited numbers of rfkill events from being created (bsc#1263573). - CVE-2026-31673: af_unix: read UNIX_DIAG_VFS data under unix_state_lock (bsc#1263143). - CVE-2026-31674: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() (bsc#1263568). - CVE-2026-31680: net: ipv6: flowlabel: defer exclusive option free until RCU teardown (bsc#1263563). - CVE-2026-31693: cifs: some missing initializations on replay (bsc#1267744). - CVE-2026-31743: nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy (bsc#1264067). - CVE-2026-31752: bridge: br_nd_send: validate ND option lengths (bsc#1264045). - CVE-2026-31771: Bluetooth: hci_event: move wake reason storage into validated event handlers (bsc#1264145). - CVE-2026-43010: bpf: Reject sleepable kprobe_multi programs at attach time (bsc#1264015). - CVE-2026-43014,CVE-2026-43015: net: macb: fix clk handling on PCI glue driver removal (bsc#1264010 bsc#1264012). - CVE-2026-43016: bpf: sockmap: Fix use-after-free of sk->sk_socket in sk_psock_verdict_data_ready() (bsc#1264007). - CVE-2026-43022: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists (bsc#1264001). - CVE-2026-43024: netfilter: nf_tables: reject immediate NF_QUEUE verdict (bsc#1263930). - CVE-2026-43028: netfilter: x_tables: ensure names are nul-terminated (bsc#1263934). - CVE-2026-43034: bnxt_en: set backing store type from query type (bsc#1263998). - CVE-2026-43035: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak (bsc#1263996). - CVE-2026-43036: net: use skb_header_pointer() for TCPv4 GSO frag_off check (bsc#1263993). - CVE-2026-43053: xfs: factor out xfs_attr3_node_entry_remove (bsc#1264084). - CVE-2026-43057: net: correctly handle tunneled traffic on IPV6_CSUM GSO fallback (bsc#1264056). - CVE-2026-43074: eventpoll: defer struct eventpoll free to RCU grace period (bsc#1264263). - CVE-2026-43080: l2tp: Drop large packets with UDP encap (bsc#1264236). - CVE-2026-43081: net: ipa: fix GENERIC_CMD register field masks for IPA v5.0+ (bsc#1264241). - CVE-2026-43083: net: ioam6: fix OOB and missing lock (bsc#1264266). - CVE-2026-43085: netfilter: nfnetlink_log: initialize nfgenmsg in NLMSG_DONE terminator (bsc#1264230). - CVE-2026-43086: ipvs: fix NULL deref in ip_vs_add_service error path (bsc#1264286). - CVE-2026-43089: xfrm_user: fix info leak in build_mapping() (bsc#1264261). - CVE-2026-43090: xfrm: fix refc

A medium severity vulnerability (CVE-2026-31590) in the Linux kernel's KVM SEV subsystem was addressed. The issue involved a WARN triggered on large size values for KVM_MEMORY_ENCRYPT_REG_REGION, which could be trivially triggered from userspace due to improper handling of 64-bit address and size values. This flaw was fixed in Linux kernel versions 5.15.0-186.196 and later. The vulnerability does not impact confidentiality or integrity but can cause denial of service (system crash). A patch is available and should be applied. The vendor advisory from Ubuntu confirms the fix and recommends updating to the specified patched kernel versions.

In the Linux kernel, the following vulnerability has been resolved: efivarfs: Fix memory leak of efivarfs_fs_info in fs_context error paths When processing mount options, efivarfs allocates efivarfs_fs_info (sfi) early in fs_context initialization. However, sfi is associated with the superblock and typically freed when the superblock is destroyed. If the fs_context is released (final put) before fill_super is called—such as on error paths or during reconfiguration—the sfi structure would leak, as ownership never transfers to the superblock. Implement the .free callback in efivarfs_context_ops to ensure any allocated sfi is properly freed if the fs_context is torn down before fill_super, preventing this memory leak.