Vulnerability-Lookup

CVE-2026-64002 (GCVE-0-2026-64002)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:56 – Updated: 2026-08-05 12:38

Title

ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()

Summary

In the Linux kernel, the following vulnerability has been resolved: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() ipv4_sysctl_exit_net() is currently freeing net->ipv4.sysctl_local_reserved_ports too soon. Only after unregister_net_sysctl_table() we can be sure no threads can possibly use the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/ecf45080a4d3f4526…
https://git.kernel.org/stable/c/a0ffc6081a8b27082…
https://git.kernel.org/stable/c/5b23a2ff379e70b6b…
https://git.kernel.org/stable/c/8e59d4d0dcde2dfb0…
https://git.kernel.org/stable/c/6512c57c4638ddec1…
https://git.kernel.org/stable/c/a7f4eefb6e1458431…
https://git.kernel.org/stable/c/155f90be5ee8be5b1…
https://git.kernel.org/stable/c/87a1e0fe7776da7ab…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < ecf45080a4d3f4526cacb8b14060fe3b49a6913b (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 5b23a2ff379e70b6b9ff744a972b63e1f8f4d996 (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57 (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 6512c57c4638ddec113bf42439361ba85a12048d (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < a7f4eefb6e1458431eef9fa20fb363320d185f76 (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 155f90be5ee8be5b110ebc0b7da33c54c83b0208 (git) Affected: 122ff243f5f104194750ecbc76d5946dd1eec934 , < 87a1e0fe7776da7ab411be332b4be58ac8840d10 (git)	guessed
Linux	Linux	Affected: 3.16 Unaffected: 0 , < 3.16 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

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To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/sysctl_net_ipv4.c"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.210",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.176",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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                  "versionStartIncluding": "3.16",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "5.15.210",
                  "versionStartIncluding": "3.16",
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                  "versionStartIncluding": "3.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "3.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()\n\nipv4_sysctl_exit_net() is currently freeing net-\u003eipv4.sysctl_local_reserved_ports\ntoo soon.\n\nOnly after unregister_net_sysctl_table() we can be sure no threads can possibly\nuse the sysctls, including /proc/sys/net/ipv4/ip_local_reserved_ports."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
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            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation requires local syscalls\u2014network namespace teardown via unshare/setns/put_net, sysctl access to /proc/sys/net/ipv4/ip_local_reserved_ports, and/or local socket bind/connect\u2014not remote packet delivery.\nAC:L - The attacker can control both sides of the race by concurrently tearing down a network namespace while hammering the sysctl or triggering socket port selection in that namespace.\nPR:L - An unprivileged local user can reach this via user namespaces (CAP_SYS_ADMIN within the user_ns for CLONE_NEWNET) and world-writable sysctl access (mode 0644) during namespace destruction.\nUI:N - No victim interaction is required beyond the attacker\u0027s own concurrent namespace teardown and sysctl or socket activity.\nS:U - The UAF corrupts kernel heap memory within the same kernel security domain; it is standard local kernel memory corruption, not a VM/hypervisor boundary escape.\nC:H - Freed 8 KiB bitmap memory remains reachable via sysctl reads (find_next_bit) and inet_is_local_reserved_port() (test_bit), enabling heap information disclosure through a use-after-free.\nI:H - Sysctl writes via proc_do_large_bitmap perform bitmap_copy/bitmap_or into the freed allocation, providing a heap write primitive exploitable for control-flow hijacking.\nA:H - Concurrent access to the freed bitmap can cause kernel oops/panic from invalid memory access, and UAF exploitation inherently threatens kernel availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:38:02.672Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b"
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          "url": "https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c"
        },
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        },
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          "url": "https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10"
        }
      ],
      "title": "ipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64002",
    "datePublished": "2026-07-19T14:56:19.495Z",
    "dateReserved": "2026-07-19T07:54:57.026Z",
    "dateUpdated": "2026-08-05T12:38:02.672Z",
    "state": "PUBLISHED"
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    "epss": {
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      "date": "2026-09-14",
      "epss": "0.00129",
      "percentile": "0.0291"
    },
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/proc/sys/net/ipv4/ip_local_reserved_ports.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/ipv4/sysctl_net_ipv4.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"ecf45080a4d3f4526cacb8b14060fe3b49a6913b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"5b23a2ff379e70b6b9ff744a972b63e1f8f4d996\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"6512c57c4638ddec113bf42439361ba85a12048d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"a7f4eefb6e1458431eef9fa20fb363320d185f76\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"155f90be5ee8be5b110ebc0b7da33c54c83b0208\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"122ff243f5f104194750ecbc76d5946dd1eec934\",\"lessThan\":\"87a1e0fe7776da7ab411be332b4be58ac8840d10\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/ipv4/sysctl_net_ipv4.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.259\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.210\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.176\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.143\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.93\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.35\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.12\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/155f90be5ee8be5b110ebc0b7da33c54c83b0208\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5b23a2ff379e70b6b9ff744a972b63e1f8f4d996\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6512c57c4638ddec113bf42439361ba85a12048d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/87a1e0fe7776da7ab411be332b4be58ac8840d10\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e59d4d0dcde2dfb07a7ef855c849a2a0560aa57\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0ffc6081a8b27082dd5eae5aa1e3f59bbecf06c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a7f4eefb6e1458431eef9fa20fb363320d185f76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ecf45080a4d3f4526cacb8b14060fe3b49a6913b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-08T19:41:45+00:00",
      "cve": "CVE-2026-64002",
      "id": "CVE-2026-64002",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:fixed": "1830",
      "product_status:known_affected": "70",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64002.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-13T17:14:05Z",
      "cve": "CVE-2026-64002",
      "id": "CVE-2026-64002",
      "initial_release_date": "2026-07-21T13:01:48Z",
      "product_status:first_fixed": "65",
      "product_status:known_affected": "343",
      "product_status:recommended": "125",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64002",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64002.json",
      "version": "9"
    }
  }
}

RHSA-2026:61932

Vulnerability from csaf_redhat - Published: 2026-09-01 09:35 - Updated: 2026-09-09 01:45

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

A flaw was found in the Linux kernel's IPv4 networking component. The `ipv4_sysctl_exit_net()` function prematurely frees the `net->ipv4.sysctl_local_reserved_ports` memory. This can lead to a use-after-free vulnerability, where other threads might attempt to access deallocated memory. Such an issue can result in system instability or a denial of service.

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 72 products

https://access.redhat.com/errata/RHSA-2026:61932

Open the full advisory

RHSA-2026:61959

Vulnerability from csaf_redhat - Published: 2026-09-01 11:13 - Updated: 2026-09-08 22:29

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 50 products

https://access.redhat.com/errata/RHSA-2026:61959

Open the full advisory

RHSA-2026:62346

Vulnerability from csaf_redhat - Published: 2026-09-02 02:01 - Updated: 2026-09-14 23:48

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 233 products

https://access.redhat.com/errata/RHSA-2026:62346

Open the full advisory

RHSA-2026:62508

Vulnerability from csaf_redhat - Published: 2026-09-02 09:06 - Updated: 2026-09-14 11:46

Summary

Red Hat Security Advisory: kernel security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 167 products

https://access.redhat.com/errata/RHSA-2026:62508

Open the full advisory

RHSA-2026:62522

Vulnerability from csaf_redhat - Published: 2026-09-02 08:23 - Updated: 2026-09-14 11:46

Summary

Red Hat Security Advisory: kernel-rt security update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 34 products

https://access.redhat.com/errata/RHSA-2026:62522

Open the full advisory

RHSA-2026:62568

Vulnerability from csaf_redhat - Published: 2026-09-02 13:05 - Updated: 2026-09-14 11:46

Summary

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Severity

Important

Scope

12 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 305 products

https://access.redhat.com/errata/RHSA-2026:62568

Open the full advisory

RHSA-2026:62609

Vulnerability from csaf_redhat - Published: 2026-09-02 12:54 - Updated: 2026-09-14 23:48

Summary

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Severity

Important

Scope

6 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 307 products

https://access.redhat.com/errata/RHSA-2026:62609

Open the full advisory

RHSA-2026:63129

Vulnerability from csaf_redhat - Published: 2026-09-04 02:32 - Updated: 2026-09-14 23:48

Summary

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Severity

Important

Scope

27 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 303 products

https://access.redhat.com/errata/RHSA-2026:63129

Open the full advisory

RHSA-2026:64775

Vulnerability from csaf_redhat - Published: 2026-09-08 09:06 - Updated: 2026-09-14 23:48

Summary

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Severity

Important

Scope

22 vulnerabilities in this advisory, including CVE-2026-64002.

CVE-2026-64002

7.0 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fixed: 309 products

https://access.redhat.com/errata/RHSA-2026:64775

Open the full advisory

rlsa-2026:63129

Vulnerability from osv_rocky

Published

2026-09-05 18:05

Modified

2026-09-15 00:13

Summary

Important: kernel security, bug fix, and enhancement update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: smc: Fix use-after-free in __pnet_find_base_ndev() (CVE-2025-40064)
kernel: Linux kernel: Denial of Service due to memory leak in tpm2_load_cmd (CVE-2025-71147)
kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)
kernel: smb/client: fix out-of-bounds read in symlink_data() (CVE-2026-46185)
kernel: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error (CVE-2026-53073)
kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)
kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)
kernel: exfat: fix potential use-after-free in exfat_find_dir_entry() (CVE-2026-63808)
kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)
kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)
kernel: KEYS: fix overflow in keyctl_pkey_params_get_2() (CVE-2026-63824)
kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)
kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)
kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)
kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)
kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)
kernel: smb: client: fix query directory replay double-free (CVE-2026-64387)
kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)
kernel: crypto: qat - fix VF2PF work teardown race in adf_disable_sriov() (CVE-2026-64438)
kernel: crypto: qat - validate RSA CRT component lengths (CVE-2026-64304)
kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)
kernel: ALSA: virtio: Validate control metadata from the device (CVE-2026-64490)
kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)
kernel: Linux kernel: Arbitrary code execution via userfaultfd shadow stack manipulation (CVE-2026-68166)
kernel: iomap: fix out-of-bounds bitmap_set() with zero-length range (CVE-2026-68145)
kernel: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() (CVE-2026-72069)
kernel: nvmet-auth: reject short AUTH_RECEIVE buffers (CVE-2026-72130)

Bug Fix(es) and Enhancement(s):

[Rocky Linux 9] TPM becomes completely unresponsive and requires a full reboot to clear [rhel-9.8.z] (JIRA:Rocky Linux-213940)
RT scheduler livelock caused by missing backport of 94894c9c477e [rhel-9.8.z] (JIRA:Rocky Linux-240634)

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.

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:63129	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2406747	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2432366	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2482006	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2482558	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2492447	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502219	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502227	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502235	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502239	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502240	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502248	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502260	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502329	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502363	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502421	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2502447	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507046	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507089	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507118	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507119	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507208	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2507277	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2508363	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2513167	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2513392	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2516248	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2516448	REPORT
	https://access.redhat.com/errata/RHSA-2026:63129	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "kernel",
        "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-9\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:5.14.0-687.44.1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:63129"
  },
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: smc: Fix use-after-free in __pnet_find_base_ndev() (CVE-2025-40064)\n\n* kernel: Linux kernel: Denial of Service due to memory leak in tpm2_load_cmd (CVE-2025-71147)\n\n* kernel: bonding: alb: fix UAF in rlb_arp_recv during bond up/down (CVE-2026-45970)\n\n* kernel: smb/client: fix out-of-bounds read in symlink_data() (CVE-2026-46185)\n\n* kernel: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error (CVE-2026-53073)\n\n* kernel: pNFS: Fix use-after-free in pnfs_update_layout() (CVE-2026-63800)\n\n* kernel: nfsd: fix posix_acl leak on SETACL decode failure (CVE-2026-53397)\n\n* kernel: exfat: fix potential use-after-free in exfat_find_dir_entry() (CVE-2026-63808)\n\n* kernel: nfsd: release layout stid on setlease failure (CVE-2026-53399)\n\n* kernel: NFSv4/flexfiles: reject zero filehandle version count (CVE-2026-53392)\n\n* kernel: KEYS: fix overflow in keyctl_pkey_params_get_2() (CVE-2026-63824)\n\n* kernel: NFSv4/pNFS: reject zero-length r_addr in nfs4_decode_mp_ds_addr (CVE-2026-53391)\n\n* kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886)\n\n* kernel: ipv4: free net-\u003eipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() (CVE-2026-64002)\n\n* kernel: net: mana: validate rx_req_idx to prevent out-of-bounds array access (CVE-2026-64018)\n\n* kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)\n\n* kernel: smb: client: fix query directory replay double-free (CVE-2026-64387)\n\n* kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)\n\n* kernel: crypto: qat - fix VF2PF work teardown race in adf_disable_sriov() (CVE-2026-64438)\n\n* kernel: crypto: qat - validate RSA CRT component lengths (CVE-2026-64304)\n\n* kernel: NFSv4: include MAY_WRITE in open permission mask for O_TRUNC (CVE-2026-64298)\n\n* kernel: ALSA: virtio: Validate control metadata from the device (CVE-2026-64490)\n\n* kernel: AMD-SN-7061: Safe RET Interrupt Vulnerability (CVE-2026-68480)\n\n* kernel: Linux kernel: Arbitrary code execution via userfaultfd shadow stack manipulation (CVE-2026-68166)\n\n* kernel: iomap: fix out-of-bounds bitmap_set() with zero-length range (CVE-2026-68145)\n\n* kernel: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() (CVE-2026-72069)\n\n* kernel: nvmet-auth: reject short AUTH_RECEIVE buffers (CVE-2026-72130)\n\nBug Fix(es) and Enhancement(s):\n\n* [Rocky Linux 9] TPM becomes completely unresponsive and requires a full reboot to clear [rhel-9.8.z] (JIRA:Rocky Linux-213940)\n\n* RT scheduler livelock caused by missing backport of 94894c9c477e [rhel-9.8.z] (JIRA:Rocky Linux-240634)\n\nFor 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.",
  "id": "RLSA-2026:63129",
  "modified": "2026-09-15T00:13:39.940174Z",
  "published": "2026-09-05T18:05:10.481546Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:63129"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406747"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2432366"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482006"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482558"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502219"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502227"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502235"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502239"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502240"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502248"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502260"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502329"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502363"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502421"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507046"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507089"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507118"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507119"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507208"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507277"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508363"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513167"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513392"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516248"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516448"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:63129"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2025-40064",
    "CVE-2025-71147",
    "CVE-2026-45970",
    "CVE-2026-46185",
    "CVE-2026-53073",
    "CVE-2026-53391",
    "CVE-2026-53392",
    "CVE-2026-53397",
    "CVE-2026-53399",
    "CVE-2026-63800",
    "CVE-2026-63808",
    "CVE-2026-63824",
    "CVE-2026-63886",
    "CVE-2026-63887",
    "CVE-2026-64002",
    "CVE-2026-64018",
    "CVE-2026-64268",
    "CVE-2026-64298",
    "CVE-2026-64304",
    "CVE-2026-64387",
    "CVE-2026-64438",
    "CVE-2026-64490",
    "CVE-2026-68145",
    "CVE-2026-68166",
    "CVE-2026-68480",
    "CVE-2026-72069",
    "CVE-2026-72130"
  ]
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-64002 (GCVE-0-2026-64002)

Vulnerability from osv_rocky

Tags

Sightings

Nomenclature