{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53230", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.393Z", "datePublished": "2026-06-25T08:39:29.210Z", "dateUpdated": "2026-06-25T08:39:29.210Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-25T08:39:29.210Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list\n\nmlx5_query_nic_vport_mac_list() sizes its firmware command buffer using\nthe PF's log_max_current_uc/mc_list capabilities. When querying a VF\nvport with a larger configured max (via devlink), the firmware response\ncan overflow this buffer:\n\n BUG: KASAN: slab-out-of-bounds in mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]\n Read of size 4 at addr ff1100013ffc8a12 by task kworker/u96:2/385\n\n CPU: 12 UID: 0 PID: 385 Comm: kworker/u96:2 Not tainted 7.0.0-rc6+ #1 PREEMPT\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)\n Workqueue: mlx5_esw_wq esw_vport_change_handler [mlx5_core]\n Call Trace:\n <TASK>\n dump_stack_lvl+0x69/0xa0\n print_report+0x176/0x4e4\n kasan_report+0xc8/0x100\n mlx5_query_nic_vport_mac_list+0x453/0x4c0 [mlx5_core]\n esw_update_vport_addr_list+0x2e3/0xda0 [mlx5_core]\n esw_vport_change_handle_locked+0xa1f/0x1060 [mlx5_core]\n esw_vport_change_handler+0x6a/0x90 [mlx5_core]\n process_one_work+0x87f/0x15e0\n worker_thread+0x62b/0x1020\n kthread+0x375/0x490\n ret_from_fork+0x4dc/0x810\n ret_from_fork_asm+0x11/0x20\n </TASK>\n\nFix by querying the vport's own HCA caps to size the buffer correctly.\nRefactor the function to allocate and return the MAC list internally,\nremoving the caller's dependency on knowing the correct max."}], "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/eswitch.c", "drivers/net/ethernet/mellanox/mlx5/core/vport.c", "include/linux/mlx5/vport.h"], "versions": [{"version": "e16aea2744abea612c27ee0eef606c6a6a8204de", "lessThan": "41781f2789309462520a93822e946521ed78f97f", "status": "affected", "versionType": "git"}, {"version": "e16aea2744abea612c27ee0eef606c6a6a8204de", "lessThan": "537d87784e81c3d7037525b99416455cee088cdc", "status": "affected", "versionType": "git"}, {"version": "e16aea2744abea612c27ee0eef606c6a6a8204de", "lessThan": "0f807764bb122fd63aa45f4229cb1ef2679fbd40", "status": "affected", "versionType": "git"}, {"version": "e16aea2744abea612c27ee0eef606c6a6a8204de", "lessThan": "2398e497389ed4be43f7cfbab499b49cec7dae1a", "status": "affected", "versionType": "git"}, {"version": "e16aea2744abea612c27ee0eef606c6a6a8204de", "lessThan": "894e036a24a26a6dd7b17d8d3fb5c53ab48a6074", "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/eswitch.c", "drivers/net/ethernet/mellanox/mlx5/core/vport.c", "include/linux/mlx5/vport.h"], "versions": [{"version": "4.5", "status": "affected"}, {"version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "4.5", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/41781f2789309462520a93822e946521ed78f97f"}, {"url": "https://git.kernel.org/stable/c/537d87784e81c3d7037525b99416455cee088cdc"}, {"url": "https://git.kernel.org/stable/c/0f807764bb122fd63aa45f4229cb1ef2679fbd40"}, {"url": "https://git.kernel.org/stable/c/2398e497389ed4be43f7cfbab499b49cec7dae1a"}, {"url": "https://git.kernel.org/stable/c/894e036a24a26a6dd7b17d8d3fb5c53ab48a6074"}], "title": "net/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{}

{"bugzilla": {"description": "kernel: net/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list", "id": "2492728", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492728"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's mlx5 driver. The mlx5_query_nic_vport_mac_list function, which handles querying network interface card (NIC) virtual port (vport) MAC addresses, incorrectly sizes its internal buffer. When a Virtual Function (VF) vport is queried with a larger configured maximum, the firmware response can overflow this buffer. This leads to a memory corruption issue, specifically a slab-out-of-bounds error, which could potentially be exploited by an attacker to cause a denial of service or other system instability."], "name": "CVE-2026-53230", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53230\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53230\nhttps://lore.kernel.org/linux-cve-announce/2026062508-CVE-2026-53230-ddd6@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e16aea2744abea612c27ee0eef606c6a6a8204de,41781f2789309462520a93822e946521ed78f97f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e16aea2744abea612c27ee0eef606c6a6a8204de,537d87784e81c3d7037525b99416455cee088cdc)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e16aea2744abea612c27ee0eef606c6a6a8204de,0f807764bb122fd63aa45f4229cb1ef2679fbd40)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e16aea2744abea612c27ee0eef606c6a6a8204de,2398e497389ed4be43f7cfbab499b49cec7dae1a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e16aea2744abea612c27ee0eef606c6a6a8204de,894e036a24a26a6dd7b17d8d3fb5c53ab48a6074)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.5"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.5)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-06-25T11:30:06.463743+00:00", "updated": "2026-06-26T05:45:04.992992+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}