{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-36489", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-21T10:12:11.459Z", "datePublished": "2024-06-21T10:18:10.327Z", "dateUpdated": "2026-05-12T11:53:57.193Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:16:16.431Z" }, "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->sk_proto = READ_ONCE(sk->sk_prot) -(1)\n\n// In update_sk_prot()\nWRITE_ONCE(sk->sk_prot, tls_prots) -(2)\n\n // In sock_common_setsockopt()\n READ_ONCE(sk->sk_prot)->setsockopt()\n\n // In tls_{setsockopt,getsockopt}()\n ctx->sk_proto->setsockopt() -(3)\n\nIn the above scenario, when (1) and (2) are reordered, (3) can observe\nthe NULL value of ctx->sk_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->sk_proto is\ninitialized, we can ensure that ctx->sk_proto are visible when\nchanging sk->sk_prot." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/tls/tls_main.c" ], "versions": [ { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "d72e126e9a36d3d33889829df8fc90100bb0e071", "status": "affected", "versionType": "git" }, { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "2c260a24cf1c4d30ea3646124f766ee46169280b", "status": "affected", "versionType": "git" }, { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "335c8f1566d8e44c384d16b450a18554896d4e8b", "status": "affected", "versionType": "git" }, { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "ab67c2fd3d070a21914d0c31319d3858ab4e199c", "status": "affected", "versionType": "git" }, { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "ef21007a7b581c7fe64d5a10c320880a033c837b", "status": "affected", "versionType": "git" }, { "version": "d5bee7374b68de3c44586d46e9e61ffc97a1e886", "lessThan": "91e61dd7a0af660408e87372d8330ceb218be302", "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/tls/tls_main.c" ], "versions": [ { "version": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.219", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.161", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.93", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9.4", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.10.219" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.161" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.93" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.9.4" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.10" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d72e126e9a36d3d33889829df8fc90100bb0e071" }, { "url": "https://git.kernel.org/stable/c/2c260a24cf1c4d30ea3646124f766ee46169280b" }, { "url": "https://git.kernel.org/stable/c/335c8f1566d8e44c384d16b450a18554896d4e8b" }, { "url": "https://git.kernel.org/stable/c/ab67c2fd3d070a21914d0c31319d3858ab4e199c" }, { "url": "https://git.kernel.org/stable/c/ef21007a7b581c7fe64d5a10c320880a033c837b" }, { "url": "https://git.kernel.org/stable/c/91e61dd7a0af660408e87372d8330ceb218be302" } ], "title": "tls: fix missing memory barrier in tls_init", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": 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