Threats Tagged 'cve-2026-43027'

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.32.1 fixes various security issues The following security issues were fixed: - 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 (bsc#1269023). - CVE-2026-53362: ipv6: account for fraggap on the paged allocation path (bsc#1269495).

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A vulnerability in the Linux kernel's IOMMU Shared Virtual Addressing (SVA) on x86 allows stale page table entries to persist after kernel page table pages are freed, causing use-after-free or write-after-free conditions. This can lead to privilege escalation or data corruption. The issue is mitigated by disabling SVA on affected systems until a patch is applied. A fix introducing deferred freeing of kernel page table pages to safely invalidate IOMMU caches is available and should be applied via system updates and reboot.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (CVE-2025-38653) * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) * kernel: nbd: defer config unlock in nbd_genl_connect (CVE-2025-68366) * kernel: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id (CVE-2025-68724) * kernel: iommu: disable SVA when CONFIG_X86 is set (CVE-2025-71089) * kernel: netfilter: nf_tables: release flowtable after rcu grace period on error (CVE-2026-23392) * kernel: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() (CVE-2026-23455) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: net: sched: act_csum: validate nested VLAN headers (CVE-2026-31684) * kernel: netfilter: ip6t_eui64: reject invalid MAC header for all packets (CVE-2026-31685) * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: Bluetooth: MGMT: validate LTK enc_size on load (CVE-2026-43020) * kernel: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq (CVE-2026-43051) * kernel: smb: client: validate the whole DACL before rewriting it in cifsacl (CVE-2026-31709) * kernel: Bluetooth: SCO: fix race conditions in sco_sock_connect() (CVE-2026-43023) * kernel: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110) * kernel: netfilter: xt_tcpmss: check remaining length before reading optlen (CVE-2026-43190) * kernel: xfs: fix freemap adjustments when adding xattrs to leaf blocks (CVE-2026-43158) * kernel: mm/page_alloc: clear page->private in free_pages_prepare() (CVE-2026-43303) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.29.1 fixes various security issues The following security issues were fixed: - 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 (bsc#1269023). - CVE-2026-53362: ipv6: account for fraggap on the paged allocation path (bsc#1269495).

This update for the SUSE Linux Enterprise Kernel 6.12.0-160000.26.1 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-2026-31570: can: gw: fix OOB heap access in cgw_csum_crc8_rel() (bsc#1263118). - 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-2026-31758: usb: usbtmc: Flush anchored URBs in usbtmc_release (bsc#1264094). - 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-2026-43437: ALSA: pcm: fix use-after-free on linked stream runtime in snd_pcm_drain() (bsc#1265127). - 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 (bsc#1269023). - CVE-2026-53362: ipv6: account for fraggap on the paged allocation path (bsc#1269495).

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: eventpoll: defer struct eventpoll free to RCU grace period (CVE-2026-43074) * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279) * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189) * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135) * kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF (CVE-2026-46242) * kernel: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry (CVE-2026-46316) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) Bug Fix(es) and Enhancement(s): * Possible THP Stalls on Multi-NUMA Systems for HANA on RHEL [rhel-9.6.z] (JIRA:RHEL-164774) * crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [rhel-9.6.z] (JIRA:RHEL-182539) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Bluetooth: Fix use-after-free bugs caused by sco_sock_timeout (CVE-2024-27398) * kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout (CVE-2024-50125) * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup (CVE-2026-43027) * kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279) * kernel: dlm: validate length in dlm_search_rsb_tree (CVE-2026-43125) * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984) * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152) * kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189) Bug Fix(es) and Enhancement(s): * Kernel panic while shutting down ice driver due to use-after-free [rhel-9.4.z] (JIRA:RHEL-177523) * crypto: testmgr - allow authenc(hmac(sha{256,384}),cts(cbc(aes))) in FIPS mode [rhel-9.4.z] (JIRA:RHEL-182538) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr (CVE-2025-68183) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: tcp: fix potential race in tcp_v6_syn_recv_sock() (CVE-2026-43198) * kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189) * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.