CVE-2023-52667

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However, its caller\nfs_any_create_table() will free ft->g again through calling\nmlx5e_destroy_flow_table(), which will lead to a double-free.\nFix this by setting ft->g to NULL in fs_any_create_groups()."}], "metrics": [{"cvssV3_1": {"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"}, "scenarios": [{"lang": "en", "value": "AV:L - The double-free is reached only through local mlx5e PTP RX flow-steering setup (SIOCSHWTSTAMP/ethtool private-flag paths \u2192 mlx5e_ptp_rx_set_fs \u2192 mlx5e_fs_tt_redirect_any_create \u2192 fs_any_create_groups), not via remotely received packets or peer protocol data.\nAC:L - The bug fires when kcalloc(ft->g) succeeds and the subsequent kvzalloc(in) fails; a local attacker can drive that GFP_KERNEL failure via memory pressure, after which the double-free in mlx5e_destroy_flow_table() is fully deterministic with no race outside attacker control.\nPR:L - An unprivileged local account can supply the memory-pressure half of the condition while ordinary admin/PTP hwstamp or channel reopen activity hits the path; alternatively, CAP_NET_ADMIN checked via ns_capable(net->user_ns) on an mlx5 VF in a tenant netns is Low, not init-ns root.\nUI:N - No separate victim action is required; the attacker induces the failing allocation (and/or issues the hwstamp/ethtool configuration themselves), and the faulty cleanup runs automatically in fs_any_create_table()'s error path.\nS:U - Impact is confined to host-kernel slab/mlx5e state under a single security authority; the defect does not cross a VM, IOMMU, or sandbox boundary.\nC:H - ft->g is a 16-byte (2-pointer) kmalloc object; under the same memory pressure that triggers the bug it can be reallocated between the two kfree()s, so freelist aliasing from the double-free yields an arbitrary kernel read/disclosure primitive.\nI:H - Double-free freelist corruption lets attacker-controlled data overwrite a live kmalloc-16 object and/or 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a local attacker can drive that GFP_KERNEL failure via memory pressure, after which the double-free in mlx5e_destroy_flow_table() is fully deterministic with no race outside attacker control.\nPR:L - An unprivileged local account can supply the memory-pressure half of the condition while ordinary admin/PTP hwstamp or channel reopen activity hits the path; alternatively, CAP_NET_ADMIN checked via ns_capable(net->user_ns) on an mlx5 VF in a tenant netns is Low, not init-ns root.\nUI:N - No separate victim action is required; the attacker induces the failing allocation (and/or issues the hwstamp/ethtool configuration themselves), and the faulty cleanup runs automatically in fs_any_create_table()'s error path.\nS:U - Impact is confined to host-kernel slab/mlx5e state under a single security authority; the defect does not cross a VM, IOMMU, or sandbox boundary.\nC:H - ft->g is a 16-byte (2-pointer) kmalloc object; under the same memory pressure that triggers the bug it can be reallocated between the two kfree()s, so freelist aliasing from the double-free yields an arbitrary kernel read/disclosure primitive.\nI:H - Double-free freelist corruption lets attacker-controlled data overwrite a live kmalloc-16 object and/or redirect subsequent allocations, providing a write and control-flow hijack primitive suitable for privilege escalation.\nA:H - The second kfree() of the already-freed pointer trips SLUB double-free detection or corrupts the freelist, causing a kernel BUG/oops/panic and denying service on the host or NIC bring-up path."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "72a729868592752b5a294d27453da264106983b1", "versionType": "git"}, {"status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "b2fa86b2aceb4bc9ada51cea90f61546d7512cbe", "versionType": "git"}, {"status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "2897c981ee63e1be5e530b1042484626a10b26d8", "versionType": "git"}, {"status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "65a4ade8a6d205979292e88beeb6a626ddbd4779", "versionType": "git"}, {"status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "aef855df7e1bbd5aa4484851561211500b22707e", "versionType": "git"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"status": "unaffected", "version": "0", "lessThan": "5.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.149", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.76", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.15", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.3", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/72a729868592752b5a294d27453da264106983b1"}, {"url": "https://git.kernel.org/stable/c/b2fa86b2aceb4bc9ada51cea90f61546d7512cbe"}, {"url": "https://git.kernel.org/stable/c/2897c981ee63e1be5e530b1042484626a10b26d8"}, {"url": "https://git.kernel.org/stable/c/65a4ade8a6d205979292e88beeb6a626ddbd4779"}, {"url": "https://git.kernel.org/stable/c/aef855df7e1bbd5aa4484851561211500b22707e"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: fix a potential double-free in fs_any_create_groups\n\nWhen kcalloc() for ft->g succeeds but kvzalloc() for in fails,\nfs_any_create_groups() will free ft->g. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "72a729868592752b5a294d27453da264106983b1", "status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "versionType": "git"}, {"lessThan": "b2fa86b2aceb4bc9ada51cea90f61546d7512cbe", "status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "versionType": "git"}, {"lessThan": "2897c981ee63e1be5e530b1042484626a10b26d8", "status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "versionType": "git"}, {"lessThan": "65a4ade8a6d205979292e88beeb6a626ddbd4779", "status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "versionType": "git"}, {"lessThan": "aef855df7e1bbd5aa4484851561211500b22707e", "status": "affected", "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"lessThan": "5.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.149", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.76", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.15", "versionType": "semver"}, {"lessThanOrEqual": "6.7.*", "status": "unaffected", "version": "6.7.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.8", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "35E631A3-4D05-4FC9-8CF5-E3E21448663F", "versionEndExcluding": "5.15.149", "versionStartIncluding": "5.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "32F0FEB3-5FE1-4400-A56D-886F09BE872E", "versionEndExcluding": "6.1.76", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "87C718CB-AE3D-4B07-B4D9-BFF64183C468", "versionEndExcluding": "6.6.15", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "58FD5308-148A-40D3-B36A-0CA6B434A8BF", "versionEndExcluding": "6.7.3", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*", "matchCriteriaId": "B9F4EA73-0894-400F-A490-3A397AB7A517", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: fix a potential double-free in fs_any_create_groups\n\nWhen kcalloc() for ft->g succeeds but kvzalloc() for in fails,\nfs_any_create_groups() will free ft->g. However, its caller\nfs_any_create_table() will free ft->g again through calling\nmlx5e_destroy_flow_table(), which will lead to a double-free.\nFix this by setting ft->g to NULL in fs_any_create_groups()."}, {"lang": "es", "value": " En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/mlx5e: corrige una posible double free en fs_any_create_groups Cuando kcalloc() para ft->g tiene \u00e9xito pero kvzalloc() para in falla, fs_any_create_groups() liberar\u00e1 ft-> gramo. Sin embargo, su llamador fs_any_create_table() liberar\u00e1 ft->g nuevamente llamando a mlx5e_destroy_flow_table(), lo que conducir\u00e1 a un double free. Solucione este problema configurando ft->g en NULL en fs_any_create_groups()."}], "id": "CVE-2023-52667", "lastModified": "2026-08-04T10:18:37.073", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-52667", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:42:12.540016Z", "version": "2.0.3"}}]}, "published": "2024-05-17T14:15:09.457", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2897c981ee63e1be5e530b1042484626a10b26d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/65a4ade8a6d205979292e88beeb6a626ddbd4779"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/72a729868592752b5a294d27453da264106983b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aef855df7e1bbd5aa4484851561211500b22707e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b2fa86b2aceb4bc9ada51cea90f61546d7512cbe"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2897c981ee63e1be5e530b1042484626a10b26d8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/65a4ade8a6d205979292e88beeb6a626ddbd4779"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/72a729868592752b5a294d27453da264106983b1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/aef855df7e1bbd5aa4484851561211500b22707e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/b2fa86b2aceb4bc9ada51cea90f61546d7512cbe"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:4352", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:4211", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.8.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4902", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.113.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-07-29T00:00:00Z"}, {"advisory": "RHSA-2024:4740", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.64.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-07-23T00:00:00Z"}, {"advisory": "RHSA-2024:4349", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.24.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:4349", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.24.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:3855", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.69.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-06-12T00:00:00Z"}, {"advisory": "RHSA-2024:3854", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.69.1.rt14.354.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-06-12T00:00:00Z"}], "bugzilla": {"description": "kernel: net/mlx5e: fix a potential double-free in fs_any_create_groups", "id": "2281350", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2281350"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-415", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/mlx5e: fix a potential double-free in fs_any_create_groups\nWhen kcalloc() for ft->g succeeds but kvzalloc() for in fails,\nfs_any_create_groups() will free ft->g. However, its caller\nfs_any_create_table() will free ft->g again through calling\nmlx5e_destroy_flow_table(), which will lead to a double-free.\nFix this by setting ft->g to NULL in fs_any_create_groups().", "A double-free flaw was found in the Linux kernel ConnectX-4 and Connect-IB cards in the Mellanox driver. This issue could allow a local user to crash the system."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module mlx5_core from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2023-52667", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-52667\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52667\nhttps://lore.kernel.org/linux-cve-announce/2024051728-CVE-2023-52667-649b@gregkh/T"], "statement": "Red Hat Enterprise Linux 8 and 9 versions are affected.", "threat_severity": "Moderate"}

{}