FKIE_CVE-2024-36489
Vulnerability from fkie_nvd - Published: 2024-06-21 11:15 - Updated: 2026-10-15 01:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved:
tls: fix missing memory barrier in tls_init
In tls_init(), a write memory barrier is missing, and store-store
reordering may cause NULL dereference in tls_{setsockopt,getsockopt}.
CPU0 CPU1
----- -----
// In tls_init()
// In tls_ctx_create()
ctx = kzalloc()
ctx->sk_proto = READ_ONCE(sk->sk_prot) -(1)
// In update_sk_prot()
WRITE_ONCE(sk->sk_prot, tls_prots) -(2)
// In sock_common_setsockopt()
READ_ONCE(sk->sk_prot)->setsockopt()
// In tls_{setsockopt,getsockopt}()
ctx->sk_proto->setsockopt() -(3)
In the above scenario, when (1) and (2) are reordered, (3) can observe
the NULL value of ctx->sk_proto, causing NULL dereference.
To fix it, we rely on rcu_assign_pointer() which implies the release
barrier semantic. By moving rcu_assign_pointer() after ctx->sk_proto is
initialized, we can ensure that ctx->sk_proto are visible when
changing sk->sk_prot.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/tls/tls_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "d72e126e9a36d3d33889829df8fc90100bb0e071",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
},
{
"lessThan": "2c260a24cf1c4d30ea3646124f766ee46169280b",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
},
{
"lessThan": "335c8f1566d8e44c384d16b450a18554896d4e8b",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
},
{
"lessThan": "ab67c2fd3d070a21914d0c31319d3858ab4e199c",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
},
{
"lessThan": "ef21007a7b581c7fe64d5a10c320880a033c837b",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
},
{
"lessThan": "91e61dd7a0af660408e87372d8330ceb218be302",
"status": "affected",
"version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/tls/tls_main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.7"
},
{
"lessThan": "5.7",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.219",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.161",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.93",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.33",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"version": "6.9.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.10",
"versionType": "original_commit_for_fix"
}
]
}
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "RUGGEDCOM RST2428P",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V3.1",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family",
"vendor": "Siemens",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SCALANCE XCM-/XRM-/XCH-/XRH-300 family",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V3.1",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unknown",
"product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
"vendor": "Siemens",
"versions": [
{
"lessThan": "V1.1.1",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"matchCriteriaId": "1EDE42D8-582E-4251-943B-96BC242F2876",
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"negate": false,
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix missing memory barrier in tls_init\n\nIn tls_init(), a write memory barrier is missing, and store-store\nreordering may cause NULL dereference in tls_{setsockopt,getsockopt}.\n\nCPU0 CPU1\n----- -----\n// In tls_init()\n// In tls_ctx_create()\nctx = kzalloc()\nctx-\u003esk_proto = READ_ONCE(sk-\u003esk_prot) -(1)\n\n// In update_sk_prot()\nWRITE_ONCE(sk-\u003esk_prot, tls_prots) -(2)\n\n // In sock_common_setsockopt()\n READ_ONCE(sk-\u003esk_prot)-\u003esetsockopt()\n\n // In tls_{setsockopt,getsockopt}()\n ctx-\u003esk_proto-\u003esetsockopt() -(3)\n\nIn the above scenario, when (1) and (2) are reordered, (3) can observe\nthe NULL value of ctx-\u003esk_proto, causing NULL dereference.\n\nTo fix it, we rely on rcu_assign_pointer() which implies the release\nbarrier semantic. By moving rcu_assign_pointer() after ctx-\u003esk_proto is\ninitialized, we can ensure that ctx-\u003esk_proto are visible when\nchanging sk-\u003esk_prot."
},
{
"lang": "es",
"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tls: corrige la barrera de memoria faltante en tls_init En tls_init(), falta una barrera de memoria de escritura y el reordenamiento tienda-tienda puede causar una desreferencia NULL en tls_{setsockopt,getsockopt}. CPU0 CPU1 ----- ----- // En tls_init() // En tls_ctx_create() ctx = kzalloc() ctx-\u0026gt;sk_proto = READ_ONCE(sk-\u0026gt;sk_prot) -(1) // En update_sk_prot( ) WRITE_ONCE(sk-\u0026gt;sk_prot, tls_prots) -(2) // En sock_common_setsockopt() READ_ONCE(sk-\u0026gt;sk_prot)-\u0026gt;setsockopt() // En tls_{setsockopt,getsockopt}() ctx-\u0026gt;sk_proto-\u0026gt;setsockopt () -(3) En el escenario anterior, cuando (1) y (2) se reordenan, (3) puede observar el valor NULL de ctx-\u0026gt;sk_proto, lo que provoca la desreferencia NULL. Para solucionarlo, confiamos en rcu_assign_pointer() que implica la sem\u00e1ntica de barrera de liberaci\u00f3n. Al mover rcu_assign_pointer() despu\u00e9s de inicializar ctx-\u0026gt;sk_proto, podemos asegurarnos de que ctx-\u0026gt;sk_proto sean visibles al cambiar sk-\u0026gt;sk_prot."
}
],
"id": "CVE-2024-36489",
"lastModified": "2026-10-15T01:18:23.000",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2024-36489",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T17:09:28.291219Z",
"version": "2.0.3"
}
}
]
},
"published": "2024-06-21T11:15:10.513",
"references": [
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"tags": [
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"url": "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b"
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{
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{
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},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Modified",
"weaknesses": [
{
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{
"lang": "en",
"value": "CWE-476"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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