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kernel: ipv6: mcast: extend RCU protection in igmp6_send()

zetlyn/cve-redhat vulnerability cve CVE-2025-21759 known 2025-02-27

https://access.redhat.com/security/cve/CVE-2025-21759

Properties

cvss6.6
receipt
Source
Red Hat
Its words
6.6
Read by
field:cvss3_score
Said since
2026-09-29 09:44 UTC
Last answered
2026-10-05 12:24 UTC
Original
open at the source
What the source handed over
{
  "CVE": "CVE-2025-21759",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2025:10379",
    "RHSA-2025:10830",
    "RHSA-2025:13589",
    "RHSA-2025:11245",
    "RHSA-2025:12311",
    "RHSA-2025:10829",
    "RHSA-2025:15656",
    "RHSA-2025:14985",
    "RHSA-2025:12209",
    "RHSA-2025:15660",
    "RHSA-2025:17124",
    "RHSA-2025:10371",
    "RHSA-2025:13590"
  ],
  "affected_packages": [
    "kernel-0:4.18.0-477.108.1.el8_8",
    "kernel-0:4.18.0-305.172.1.el8_4",
    "kernel-0:6.12.0-55.20.1.el10_0",
    "kernel-0:5.14.0-284.128.1.el9_2",
    "kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2",
    "kernel-0:4.18.0-553.69.1.el8_10",
    "kernel-0:5.14.0-427.77.1.el9_4",
    "kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10",
    "kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0",
    "kernel-0:4.18.0-372.162.1.el8_6",
    "kernel-0:4.18.0-193.168.1.el8_2",
    "kernel-0:5.14.0-570.25.1.el9_6",
    "kernel-0:5.14.0-70.138.1.el9_0"
  ],
  "bugzilla": "2348596",
  "bugzilla_description": "kernel: ipv6: mcast: extend RCU protection in igmp6_send()",
  "cvss3_score": "6.6",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2025-02-27T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21759.json",
  "severity": "moderate"
}
cweCWE-416
receipt
Source
Red Hat
Its words
CWE-416
Read by
field:CWE
Said since
2026-09-29 09:44 UTC
Last answered
2026-10-05 12:24 UTC
Original
open at the source
What the source handed over
{
  "CVE": "CVE-2025-21759",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2025:10379",
    "RHSA-2025:10830",
    "RHSA-2025:13589",
    "RHSA-2025:11245",
    "RHSA-2025:12311",
    "RHSA-2025:10829",
    "RHSA-2025:15656",
    "RHSA-2025:14985",
    "RHSA-2025:12209",
    "RHSA-2025:15660",
    "RHSA-2025:17124",
    "RHSA-2025:10371",
    "RHSA-2025:13590"
  ],
  "affected_packages": [
    "kernel-0:4.18.0-477.108.1.el8_8",
    "kernel-0:4.18.0-305.172.1.el8_4",
    "kernel-0:6.12.0-55.20.1.el10_0",
    "kernel-0:5.14.0-284.128.1.el9_2",
    "kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2",
    "kernel-0:4.18.0-553.69.1.el8_10",
    "kernel-0:5.14.0-427.77.1.el9_4",
    "kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10",
    "kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0",
    "kernel-0:4.18.0-372.162.1.el8_6",
    "kernel-0:4.18.0-193.168.1.el8_2",
    "kernel-0:5.14.0-570.25.1.el9_6",
    "kernel-0:5.14.0-70.138.1.el9_0"
  ],
  "bugzilla": "2348596",
  "bugzilla_description": "kernel: ipv6: mcast: extend RCU protection in igmp6_send()",
  "cvss3_score": "6.6",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2025-02-27T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21759.json",
  "severity": "moderate"
}
packageskernel-0:4.18.0-477.108.1.el8_8, kernel-0:4.18.0-305.172.1.el8_4, kernel-0:6.12.0-55.20.1.el10_0, kernel-0:5.14.0-284.128.1.el9_2, kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2, kernel-0:4.18.0-553.69.1.el8_10, kernel-0:5.14.0-427.77.1.el9_4, kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10, kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0, kernel-0:4.18.0-372.162.1.el8_6, kernel-0:4.18.0-193.168.1.el8_2, kernel-0:5.14.0-570.25.1.el9_6, kernel-0:5.14.0-70.138.1.el9_0
receipt
Source
Red Hat
Its words
kernel-0:4.18.0-477.108.1.el8_8, kernel-0:4.18.0-305.172.1.el8_4, kernel-0:6.12.0-55.20.1.el10_0, kernel-0:5.14.0-284.128.1.el9_2, kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2, kernel-0:4.18.0-553.69.1.el8_10, kernel-0:5.14.0-427.77.1.el9_4, kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10, kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0, kernel-0:4.18.0-372.162.1.el8_6, kernel-0:4.18.0-193.168.1.el8_2, kernel-0:5.14.0-570.25.1.el9_6, kernel-0:5.14.0-70.138.1.el9_0
Read by
field:affected_packages[]
Said since
2026-09-29 09:44 UTC
Last answered
2026-10-05 12:24 UTC
Original
open at the source
What the source handed over
{
  "CVE": "CVE-2025-21759",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2025:10379",
    "RHSA-2025:10830",
    "RHSA-2025:13589",
    "RHSA-2025:11245",
    "RHSA-2025:12311",
    "RHSA-2025:10829",
    "RHSA-2025:15656",
    "RHSA-2025:14985",
    "RHSA-2025:12209",
    "RHSA-2025:15660",
    "RHSA-2025:17124",
    "RHSA-2025:10371",
    "RHSA-2025:13590"
  ],
  "affected_packages": [
    "kernel-0:4.18.0-477.108.1.el8_8",
    "kernel-0:4.18.0-305.172.1.el8_4",
    "kernel-0:6.12.0-55.20.1.el10_0",
    "kernel-0:5.14.0-284.128.1.el9_2",
    "kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2",
    "kernel-0:4.18.0-553.69.1.el8_10",
    "kernel-0:5.14.0-427.77.1.el9_4",
    "kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10",
    "kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0",
    "kernel-0:4.18.0-372.162.1.el8_6",
    "kernel-0:4.18.0-193.168.1.el8_2",
    "kernel-0:5.14.0-570.25.1.el9_6",
    "kernel-0:5.14.0-70.138.1.el9_0"
  ],
  "bugzilla": "2348596",
  "bugzilla_description": "kernel: ipv6: mcast: extend RCU protection in igmp6_send()",
  "cvss3_score": "6.6",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2025-02-27T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21759.json",
  "severity": "moderate"
}
severitymoderate
A flaw that is harder to exploit, or whose impact is limited.
receipt
Source
Red Hat
Its words
moderate
Read by
field:severity
Said since
2026-09-29 09:44 UTC
Last answered
2026-10-05 12:24 UTC
Original
open at the source
What the source handed over
{
  "CVE": "CVE-2025-21759",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2025:10379",
    "RHSA-2025:10830",
    "RHSA-2025:13589",
    "RHSA-2025:11245",
    "RHSA-2025:12311",
    "RHSA-2025:10829",
    "RHSA-2025:15656",
    "RHSA-2025:14985",
    "RHSA-2025:12209",
    "RHSA-2025:15660",
    "RHSA-2025:17124",
    "RHSA-2025:10371",
    "RHSA-2025:13590"
  ],
  "affected_packages": [
    "kernel-0:4.18.0-477.108.1.el8_8",
    "kernel-0:4.18.0-305.172.1.el8_4",
    "kernel-0:6.12.0-55.20.1.el10_0",
    "kernel-0:5.14.0-284.128.1.el9_2",
    "kernel-rt-0:5.14.0-284.128.1.rt14.413.el9_2",
    "kernel-0:4.18.0-553.69.1.el8_10",
    "kernel-0:5.14.0-427.77.1.el9_4",
    "kernel-rt-0:4.18.0-553.69.1.rt7.410.el8_10",
    "kernel-rt-0:5.14.0-70.138.1.rt21.210.el9_0",
    "kernel-0:4.18.0-372.162.1.el8_6",
    "kernel-0:4.18.0-193.168.1.el8_2",
    "kernel-0:5.14.0-570.25.1.el9_6",
    "kernel-0:5.14.0-70.138.1.el9_0"
  ],
  "bugzilla": "2348596",
  "bugzilla_description": "kernel: ipv6: mcast: extend RCU protection in igmp6_send()",
  "cvss3_score": "6.6",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2025-02-27T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-21759.json",
  "severity": "moderate"
}

Text

kernel: ipv6: mcast: extend RCU protection in igmp6_send()