CVE-2026-46098 (GCVE-0-2026-46098)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:59 – Updated: 2026-06-14 17:54
VLAI
Title
net: caif: clear client service pointer on teardown
Summary
In the Linux kernel, the following vulnerability has been resolved: net: caif: clear client service pointer on teardown `caif_connect()` can tear down an existing client after remote shutdown by calling `caif_disconnect_client()` followed by `caif_free_client()`. `caif_free_client()` releases the service layer referenced by `adap_layer->dn`, but leaves that pointer stale. When the socket is later destroyed, `caif_sock_destructor()` calls `caif_free_client()` again and dereferences the freed service pointer. Clear the client/service links before releasing the service object so repeated teardown becomes harmless.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < cffca7a18b8f9de7c3d3013a1f5740c412b2a501 (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < 7ef97d4675b05a103648bd9244d91dff7d8c08b0 (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < e16859f3f4426fa349bc5519d582a93d28f5a15d (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < 914c6456fcfc21a3d553945dff62fd1621d6155d (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < 3ac6db584d9d420267bb8413115707eeec76d9cf (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < 63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9 (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < a4b191ddc12c55ddb62feb096536f819f384d6f1 (git)
Affected: 43e3692101086add8719c3b8b50b05c9ac5b14e1 , < f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8 (git)
Create a notification for this product.
Linux Linux Affected: 3.0
Unaffected: 0 , < 3.0 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website

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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: caif: clear client service pointer on teardown\n\n`caif_connect()` can tear down an existing client after remote shutdown by\ncalling `caif_disconnect_client()` followed by `caif_free_client()`.\n`caif_free_client()` releases the service layer referenced by\n`adap_layer-\u003edn`, but leaves that pointer stale.\n\nWhen the socket is later destroyed, `caif_sock_destructor()` calls\n`caif_free_client()` again and dereferences the freed service pointer.\n\nClear the client/service links before releasing the service object so\nrepeated teardown becomes harmless."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T17:54:16.006Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "dateReserved": "2026-05-13T15:03:33.097Z",
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harmless.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/caif/cfsrvl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"cffca7a18b8f9de7c3d3013a1f5740c412b2a501\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"7ef97d4675b05a103648bd9244d91dff7d8c08b0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"e16859f3f4426fa349bc5519d582a93d28f5a15d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"914c6456fcfc21a3d553945dff62fd1621d6155d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"3ac6db584d9d420267bb8413115707eeec76d9cf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"63d21a3aa0108b9dde4e99b0d3d5d679ac68c0f9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"a4b191ddc12c55ddb62feb096536f819f384d6f1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43e3692101086add8719c3b8b50b05c9ac5b14e1\",\"lessThan\":\"f7cf8ece8cee3c1ee361991470cdb1eb65ab02e8\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/caif/cfsrvl.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.258\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.140\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.86\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.27\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.4\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"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-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.0\",\"versionEndExcluding\":\"5.10.258\",\"matchCriteriaId\":\"ADE9309F-1058-4BD7-8F94-3FE94CF5B8A4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.209\",\"matchCriteriaId\":\"919C10A9-7951-4A74-BADD-C135A0A8D8B4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.175\",\"matchCriteriaId\":\"92385813-D91D-480D-83A1-F423D2CBB2BA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.140\",\"matchCriteriaId\":\"A1A92866-F406-43B5-B2D1-CFC274753E9D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.86\",\"matchCriteriaId\":\"55DA1C62-9991-451E-B8A8-E0004E00F789\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.27\",\"matchCriteriaId\":\"A10AC84F-C058-47D5-85B4-E6E51A613B74\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T11:05:11+00:00",
      "cve": "CVE-2026-46098",
      "id": "CVE-2026-46098",
      "initial_release_date": "2026-05-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: caif: clear client service pointer on teardown",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46098.json",
      "version": "3"
    }
  }
}



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