RHSA-2026:1623

Vulnerability from csaf_redhat - Published: 2026-02-02 01:17 - Updated: 2026-03-13 01:10
Summary
Red Hat Security Advisory: kernel-rt security update

Notes

Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. 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): * kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898) * kernel: i40e: fix idx validation in config queues msg (CVE-2025-39971) * kernel: Linux kernel: vsock vulnerability may lead to memory corruption (CVE-2025-40248) 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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        "name": "Heap-based Buffer Overflow"
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      "discovery_date": "2025-10-01T00:00:00+00:00",
      "ids": [
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          "text": "2400598"
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      "notes": [
        {
          "category": "description",
          "text": "A heap\u2011overflow vulnerability was discovered in the linux kernel e1000e driver\u2019s e1000_set_eeprom() function, insufficient validation of the requested length for an EEPROM change could allow a local, low\u2011privilege user to trigger memory corruption (heap overflow). A local unprivileged user with access to the driver could exploit this flaw to cause memory corruption, potentially leading to confidentiality, integrity, and availability damage.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: e1000e: fix heap overflow in e1000_set_eeprom",
          "title": "Vulnerability summary"
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        {
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          "text": "This CVE has been marked as Rejected by the assigning CNA.",
          "title": "Statement"
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        {
          "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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          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-40248",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-40248"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-40248",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-40248"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2025120430-CVE-2025-40248-506e@gregkh/T"
        }
      ],
      "release_date": "2025-12-04T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-02-02T01:17:00+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:1623"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: Linux kernel: vsock vulnerability may lead to memory corruption"
    }
  ]
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.