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CVE-2023-53343 icmp6: Fix null-ptr-deref of ip6_null_entry->rt6i_idev in icmp6_dev().

🗓️ 17 Sep 2025 14:56:36Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 3 Views

Fix null pointer dereference in icmp6_dev() when ip6_null_entry is used with IPv6 extension headers.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-299)
24 Aug 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2-2025-3038 (ALAS-2025-3038)
15 Oct 202500:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2023-039 (ALASKERNEL-5.10-2023-039)
6 Sep 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-025 (ALASKERNEL-5.15-2023-025)
14 Aug 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2023-054 (ALASKERNEL-5.4-2023-054)
6 Oct 202300:00
–nessus
Tenable Nessus		EulerOS 2.0 SP10 : kernel (EulerOS-SA-2026-1029)
15 Jan 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.10.0 : kernel (EulerOS-SA-2026-1172)
31 Jan 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1212)
2 Feb 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1224)
2 Feb 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP12 : kernel (EulerOS-SA-2026-1366)
16 Mar 202600:00
–nessus
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/icmp.c"
    ],
    "versions": [
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "8803c59fde4dd370a627dfbf7183682fa0cabf70",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "61b4c4659746959056450b92a5d7e6bc1243b31b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "d30ddd7ff15df9d91a793ce3f06f0190ff7afacc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "3fabca5d9cae0140b6aad09a1c6b9aa57089fbb8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "1462e9d9aa52d14665eaca6d89d22c4af44ede04",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "aa657d319e6c7502a4eb85cc0ee80cc81b8e5724",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4832c30d5458387ff2533ff66fbde26ad8bb5a2d",
        "lessThan": "2aaa8a15de73874847d62eb595c6683bface80fd",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/icmp.c"
    ],
    "versions": [
      {
        "version": "4.14",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.14",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "4.19.291",
        "lessThanOrEqual": "4.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.4.251",
        "lessThanOrEqual": "5.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.188",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.121",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.40",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.4.5",
        "lessThanOrEqual": "6.4.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.5",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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EPSS0.00021
linux kernelicmp6null pointerip6 null entryipv6 extension headersicmp6 dev
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