CVE-2025-22110 (GCVE-0-2025-22110)

Vulnerability from cvelistv5 – Published: 2025-04-16 14:12 – Updated: 2026-08-05 11:56
VLAI
Title
netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error It is possible that ctx in nfqnl_build_packet_message() could be used before it is properly initialize, which is only initialized by nfqnl_get_sk_secctx(). This patch corrects this problem by initializing the lsmctx to a safe value when it is declared. This is similar to the commit 35fcac7a7c25 ("audit: Initialize lsmctx to avoid memory allocation error").
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2d470c778120d3cdb8d8ab250329ca85f49f12b1 , < ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759 (git)
Affected: 2d470c778120d3cdb8d8ab250329ca85f49f12b1 , < 778b09d91baafb13408470c721d034d6515cfa5a (git)
Create a notification for this product.
Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nfnetlink_queue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759",
              "status": "affected",
              "version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
              "versionType": "git"
            },
            {
              "lessThan": "778b09d91baafb13408470c721d034d6515cfa5a",
              "status": "affected",
              "version": "2d470c778120d3cdb8d8ab250329ca85f49f12b1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nfnetlink_queue.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "lessThan": "6.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.2",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "6.14",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error\n\nIt is possible that ctx in nfqnl_build_packet_message() could be used\nbefore it is properly initialize, which is only initialized\nby nfqnl_get_sk_secctx().\n\nThis patch corrects this problem by initializing the lsmctx to a safe\nvalue when it is declared.\n\nThis is similar to the commit 35fcac7a7c25\n(\"audit: Initialize lsmctx to avoid memory allocation error\")."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The uninitialized `lsm_context` is consumed in `nfqnl_build_packet_message()`, which runs in the softirq packet-receive path for every packet hitting an NFQUEUE verdict (`nf_hook_slow` \u2192 `nf_queue` \u2192 `nfqnl_enqueue_packet`). On an internet-facing host running an inline NFQUEUE-based IPS (Suricata/Snort IPS mode), remote packets alone drive the vulnerable code.\nAC:L - The uninitialized-memory use is unconditional and deterministic \u2014 it fires on every queued packet with no crafting required \u2014 and the attacker can repeat it millions of times while shaping the underlying stack through the preceding IP/conntrack/netfilter processing of their own packets.\nPR:N - In the inline-IPS deployment the remote attacker needs no credentials whatsoever; merely sending traffic to the host executes the vulnerable code. Even in the purely local model, the `NFQUEUE` rule and nfnetlink queue socket are gated only by `netlink_net_capable(CAP_NET_ADMIN)`/`ns_capable()`, which any unprivileged user obtains via `unshare -Urn`.\nUI:N - No victim action is required \u2014 the flaw triggers automatically during kernel packet processing as soon as traffic traverses the NFQUEUE rule.\nS:U - The invalid free and resulting slab corruption occur entirely within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Uninitialized stack memory is interpreted as a pointer and length, and the resulting wild `kfree()` yields slab corruption that can be groomed into an arbitrary-read primitive, so treat as high per use-after-free/uninitialized-memory guidance.\nI:H - `selinux_release_secctx()`/`apparmor_release_secctx()` call `kfree()` on an attacker-influenceable stale stack value, giving an arbitrary-free primitive that corrupts the slab allocator and is a well-established route to arbitrary write and control-flow hijack.\nA:H - Freeing a bogus pointer triggers slab metadata corruption, `BUG_ON`/oops, or panic, and the path is reached on every queued packet so it can be driven repeatedly until the kernel dies."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:56:50.656Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759"
        },
        {
          "url": "https://git.kernel.org/stable/c/778b09d91baafb13408470c721d034d6515cfa5a"
        }
      ],
      "title": "netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22110",
    "datePublished": "2025-04-16T14:12:57.061Z",
    "dateReserved": "2024-12-29T08:45:45.820Z",
    "dateUpdated": "2026-08-05T11:56:50.656Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-22110",
      "date": "2026-08-12",
      "epss": "0.00354",
      "percentile": "0.28318"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22110\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T15:16:05.253\",\"lastModified\":\"2026-07-30T06:22:14.740\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnetfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error\\n\\nIt is possible that ctx in nfqnl_build_packet_message() could be used\\nbefore it is properly initialize, which is only initialized\\nby nfqnl_get_sk_secctx().\\n\\nThis patch corrects this problem by initializing the lsmctx to a safe\\nvalue when it is declared.\\n\\nThis is similar to the commit 35fcac7a7c25\\n(\\\"audit: Initialize lsmctx to avoid memory allocation error\\\").\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: nfnetlink_queue: Inicializar ctx para evitar un error de asignaci\u00f3n de memoria. Es posible que ctx en nfqnl_build_packet_message() se utilice antes de su inicializaci\u00f3n correcta, la cual solo se inicializa mediante nfqnl_get_sk_secctx(). Este parche corrige este problema inicializando lsmctx a un valor seguro al declararlo. Esto es similar a el commit 35fcac7a7c25 (\\\"auditor\u00eda: Inicializar lsmctx para evitar un error de asignaci\u00f3n de memoria\\\").\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/netfilter/nfnetlink_queue.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2d470c778120d3cdb8d8ab250329ca85f49f12b1\",\"lessThan\":\"ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2d470c778120d3cdb8d8ab250329ca85f49f12b1\",\"lessThan\":\"778b09d91baafb13408470c721d034d6515cfa5a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/netfilter/nfnetlink_queue.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14.2\",\"lessThanOrEqual\":\"6.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15\",\"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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-908\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.14\",\"versionEndExcluding\":\"6.14.2\",\"matchCriteriaId\":\"FADAE5D8-4808-442C-B218-77B2CE8780A0\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/778b09d91baafb13408470c721d034d6515cfa5a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ddbf7e1d82a1d0c1d3425931a6cb1b83f8454759\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T09:36:26+00:00",
      "cve": "CVE-2025-22110",
      "id": "CVE-2025-22110",
      "initial_release_date": "2025-04-16T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-22110.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-13T04:20:19Z",
      "cve": "CVE-2025-22110",
      "id": "CVE-2025-22110",
      "initial_release_date": "2025-04-23T02:38:33Z",
      "product_status:known_not_affected": "275",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-22110",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-22110.json",
      "version": "6"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.