Threats Tagged 'cve-2026-43284'

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.12.91. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHBA-2026:21694 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html/release_notes Security Fix(es): None 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. All OpenShift Container Platform 4.12 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.12/html-single/updating_clusters/index#updating-cluster-within-minor.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766) * kernel: scsi: qla2xxx: Fix improper freeing of purex item (CVE-2025-68741) * kernel: libceph: make decode_pool() more resilient against corrupted osdmaps (CVE-2025-71116) * kernel: libceph: prevent potential out-of-bounds reads in handle_auth_done() (CVE-2026-22984) * kernel: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() (CVE-2026-22990) * kernel: Linux kernel: Denial of Service in libceph OSD client due to unreset sparse-read state (CVE-2026-23136) * kernel: net/sched: cls_u32: use skb_header_pointer_careful() (CVE-2026-23204) * kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) * kernel: can: raw: fix ro->uniq use-after-free in raw_rcv() (CVE-2026-31532) * kernel: usbip: validate number_of_packets in usbip_pack_ret_submit() (CVE-2026-31607) * kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163) * kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128) * kernel: "Dirty Frag" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) * kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300) * kernel: Read root-owned files as an unprivileged user (CVE-2026-46333) 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: net: af_can: do not leave a dangling sk pointer in can_create() (CVE-2024-56603) * kernel: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit (CVE-2025-39766) * kernel: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id (CVE-2025-68724) * kernel: scsi: qla2xxx: Fix improper freeing of purex item (CVE-2025-68741) * kernel: Linux kernel: Use-after-free in traffic control (act_ct) may lead to denial of service or privilege escalation (CVE-2026-23270) * kernel: Linux kernel KVM: Privilege escalation or denial of service due to improper shadow page table entry handling (CVE-2026-23401) * kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache (CVE-2026-31402) * kernel: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold (CVE-2026-31408) * kernel: usbip: validate number_of_packets in usbip_pack_ret_submit() (CVE-2026-31607) * kernel: RDMA/umem: Fix double dma_buf_unpin in failure path (CVE-2026-43128) * kernel: "Dirty Frag" is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) * kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-46300) * kernel: Read root-owned files as an unprivileged user (CVE-2026-46333) 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: Linux kernel: Denial of Service in authencesn due to too-short AAD (CVE-2026-23060) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) * kernel: crypto: af_alg - limit RX SG extraction by receive buffer budget (CVE-2026-31677) * kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) 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: Linux kernel: Denial of Service in authencesn due to too-short AAD (CVE-2026-23060) * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) * kernel: crypto: af_alg - limit RX SG extraction by receive buffer budget (CVE-2026-31677) * kernel: "Dirty Frag" ESP XFRM variant is a new universal Local Privilege Escalation (LPE) vulnerability in the Linux kernel (CVE-2026-43284) 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.

Red Hat OpenShift Container Platform 4.20.22 addresses two Linux kernel vulnerabilities (CVE-2026-43284 and CVE-2026-43500) known as DirtyFrag that allow local unprivileged attackers to escalate privileges to root on the host. These vulnerabilities affect container environments and have two exploit paths with varying impacts depending on the container runtime and security profiles used. The update fixes these issues and is rated as important by Red Hat with a CVSS score of 7.8 (high severity). Users are advised to upgrade to version 4.20.22 or later to mitigate the risk.

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb. TCP marks such skbs with SKBFL_SHARED_FRAG after skb_splice_from_iter(), so later paths that may modify packet data can first make a private copy. The IPv4/IPv6 datagram append paths did not set this flag when splicing pages into UDP skbs. That leaves an ESP-in-UDP packet made from shared pipe pages looking like an ordinary uncloned nonlinear skb. ESP input then takes the no-COW fast path for uncloned skbs without a frag_list and decrypts in place over data that is not owned privately by the skb. Mark IPv4/IPv6 datagram splice frags with SKBFL_SHARED_FRAG, matching TCP. Also make ESP input fall back to skb_cow_data() when the flag is present, so ESP does not decrypt externally backed frags in place. Private nonlinear skb frags still use the existing fast path. This intentionally does not change ESP output. In esp_output_head(), the path that appends the ESP trailer to existing skb tailroom without calling skb_cow_data() is not reachable for nonlinear skbs: skb_tailroom() returns zero when skb->data_len is nonzero, while ESP tailen is positive. Thus ESP output will either use the separate destination-frag path or fall back to skb_cow_data().

This release of the Red Hat build of OpenTelemetry provides security improvements. Breaking changes: * None Deprecations: * None Technology Preview features: * None Enhancements: * None Bug fixes: * TOCTOU race condition in libcap cap_set_file() function is fixed. Previously, the cap_set_file() function in libcap contained a Time-of-check-to-time-of-use (TOCTOU) race condition. A local unprivileged user with write access to a parent directory could exploit this vulnerability to redirect file capability updates to an attacker-controlled file. This flaw allowed an attacker to inject capabilities into or strip capabilities from unintended executables, leading to privilege escalation. With this update, the race condition in cap_set_file() is fixed. As a result, file capability updates are applied to the intended target files, and the vulnerability is no longer exploitable. For more information, see https://access.redhat.com/security/cve/CVE-2026-4878. * Integer overflow vulnerability in Apache Thrift TFramedTransport Go implementation is fixed. Previously, the Apache Thrift TFramedTransport Go language implementation contained an integer overflow or wraparound vulnerability. An attacker could exploit this flaw to cause unexpected behavior or resource exhaustion, leading to a denial of service. With this update, the integer overflow issue is fixed. As a result, TFramedTransport correctly handles integer values, and the vulnerability is no longer exploitable. For more information, see https://access.redhat.com/security/cve/CVE-2026-41602. * Denial of service vulnerability in Go crypto/x509 and crypto/tls packages is fixed. Previously, the Go standard library packages crypto/x509 and crypto/tls did not properly limit the number of intermediate certificates processed during certificate chain building. An attacker could provide an excessive number of intermediate certificates, causing an uncontrolled amount of work. This flaw could result in a denial of service (DoS) condition, making the affected system or application unavailable to legitimate users. With this update, the number of intermediate certificates processed during certificate chain building is properly limited. As a result, the packages handle certificate chains efficiently, and the vulnerability is no longer exploitable. For more information, see https://access.redhat.com/security/cve/CVE-2026-32280. * TLS 1.3 connection deadlock vulnerability is fixed. Previously, if one side of a TLS 1.3 connection sent multiple key update messages post-handshake in a single record, the connection could deadlock. This deadlock caused uncontrolled consumption of resources and could lead to a denial of service. With this update, TLS 1.3 connections correctly handle multiple key update messages in a single record. As a result, connections no longer deadlock, and the vulnerability is no longer exploitable. For more information about CVE-2026-32283, see https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU. * IPC API vulnerability in systemd is fixed. Previously, system and service manager systemd contained a flaw that an unprivileged user could exploit by making an Inter-Process Communication (IPC) API call with spurious data. In older versions (v249 and earlier), this flaw could lead to stack overwriting with attacker-controlled content, potentially enabling arbitrary code execution or privilege escalation. In newer versions (v250 and later), this flaw caused systemd to assert and freeze, resulting in a denial of service (DoS). With this update, systemd correctly validates IPC API calls. As a result, the vulnerability is no longer exploitable. For more information, see https://access.redhat.com/security/cve/CVE-2026-29111. Known issues: * The filesystem scraper does not produce the system.filesystem.inodes.usage and system.filesystem.usage metrics in the Host Metrics Receiver after upgrading from Collector version 0.142.0 to 0.143.0 or later. No known workaround exists. For more information, see https://issues.redhat.com/browse/TRACING-5963.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: crypto: algif_aead - Revert to operating out-of-place (CVE-2026-31431) 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.

In the Linux kernel, the following vulnerability has been resolved: crypto: algif_aead - Revert to operating out-of-place This mostly reverts commit 72548b093ee3 except for the copying of the associated data. There is no benefit in operating in-place in algif_aead since the source and destination come from different mappings. Get rid of all the complexity added for in-place operation and just copy the AD directly.