rhsa-2024_1269
Vulnerability from csaf_redhat
Published
2024-03-12 11:49
Modified
2024-09-13 23:56
Summary
Red Hat Security Advisory: kernel-rt security update

Notes

Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Telecommunications Update Service. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390) * net/sched: sch_qfq component can be exploited if in qfq_change_agg function happens qfq_enqueue overhead (CVE-2023-3611) * net/sched: sch_hfsc UAF (CVE-2023-4623) * use-after-free in sch_qfq network scheduler (CVE-2023-4921) * use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178) * inactive elements in nft_pipapo_walk (CVE-2023-6817) * out-of-bounds write in qfq_change_class function (CVE-2023-31436) * nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001) * IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871) * ktls overwrites readonly memory pages when using function splice with a ktls socket as destination (CVE-2024-0646) * nfp: use-after-free in area_cache_get() (CVE-2022-3545) * vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query (CVE-2022-38096) * Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982) * null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip (CVE-2022-41858) * fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (CVE-2023-38409) * use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c (CVE-2023-40283) 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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.



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          "text": "A vulnerability was found in area_cache_get in drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c in the Netronome Flow Processor (NFP) driver in the Linux kernel. This flaw allows a manipulation that may lead to a use-after-free issue.",
          "title": "Vulnerability description"
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          "text": "kernel: nfp: use-after-free in area_cache_get()",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "title": "Vulnerability description"
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          "text": "kernel: vmwgfx: NULL pointer dereference in vmw_cmd_dx_define_query",
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "title": "Vulnerability description"
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "names": [
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          "category": "description",
          "text": "A use-after-free flaw was found in the Netfilter subsystem in the Linux kernel via the nft_pipapo_walk function. This issue may allow a local user with CAP_NET_ADMIN capability to trigger an application crash, information disclosure, or local privilege escalation.",
          "title": "Vulnerability description"
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          "text": "kernel: inactive elements in nft_pipapo_walk",
          "title": "Vulnerability summary"
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          "text": "Only local users with `CAP_NET_ADMIN` capability or root can trigger this issue. \nOn Red Hat Enterprise Linux, local unprivileged users can exploit unprivileged user namespaces (CONFIG_USER_NS) to grant themselves this capability.\n\nThe OpenShift Container Platform (OCP) control planes or master machines are based on Red Hat Enterprise Linux CoreOS (RHCOS) that consists primarily of RHEL components, therefore, it is also affected by this kernel vulnerability. A successful exploit needs necessary privileges (CAP_NET_ADMIN) and direct, local access. A local user in RHCOS is already a root with full permissions, hence existence of this vulnerability does not bring any value from the potential attacker perspective. From the OpenShift containers perspective, this vulnerability cannot be exploited as in OpenShift the cluster processes on the node are namespaced, which means that switching the namespace in the running OpenShift container will not bring necessary capabilities.\nThis means that for OpenShift, the impact of this vulnerability is Low.\n\nSimilar to the CVE-2023-32233 vulnerability, this has been explained in the following blog post as an example of a \"Container escape vulnerability\":\nhttps://www.redhat.com/en/blog/containers-vulnerability-risk-assessment",
          "title": "Statement"
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "title": "Vulnerability description"
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          "title": "Vulnerability summary"
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          "title": "Statement"
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination"
    }
  ]
}


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