{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-52667", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-03-07T14:49:46.885Z", "datePublished": "2024-05-17T14:01:48.454Z", "dateUpdated": "2026-08-05T09:10:56.489Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:10:56.489Z" }, "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()." } ], "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 → mlx5e_ptp_rx_set_fs → mlx5e_fs_tt_redirect_any_create → 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 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": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c" ], "versions": [ { "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "72a729868592752b5a294d27453da264106983b1", "status": "affected", "versionType": "git" }, { "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "b2fa86b2aceb4bc9ada51cea90f61546d7512cbe", "status": "affected", "versionType": "git" }, { "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "2897c981ee63e1be5e530b1042484626a10b26d8", "status": "affected", "versionType": "git" }, { "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "65a4ade8a6d205979292e88beeb6a626ddbd4779", "status": "affected", "versionType": "git" }, { "version": "0f575c20bf0686caf3d82d6c626c2e1e4a4c36e6", "lessThan": "aef855df7e1bbd5aa4484851561211500b22707e", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mellanox/mlx5/core/en/fs_tt_redirect.c" ], "versions": [ { "version": "5.13", "status": "affected" }, { "version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.15", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.3", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8", "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": "5.13", "versionEndExcluding": "5.15.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.1.76" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.6.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.7.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.13", "versionEndExcluding": "6.8" } ] } ] } ], "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" } ], "title": "net/mlx5e: fix a potential double-free in fs_any_create_groups", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T23:11:34.566Z" }, "title": "CVE Program Container", "references": [ { "url": 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