CVE-2025-38628

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-38628", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.029Z", "datePublished": "2025-08-22T16:00:36.841Z", "dateUpdated": "2026-05-11T21:31:54.121Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:31:54.121Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix release of uninitialized resources on error path\n\nThe commit in the fixes tag made sure that mlx5_vdpa_free()\nis the single entrypoint for removing the vdpa device resources\nadded in mlx5_vdpa_dev_add(), even in the cleanup path of\nmlx5_vdpa_dev_add().\n\nThis means that all functions from mlx5_vdpa_free() should be able to\nhandle uninitialized resources. This was not the case though:\nmlx5_vdpa_destroy_mr_resources() and mlx5_cmd_cleanup_async_ctx()\nwere not able to do so. This caused the splat below when adding\na vdpa device without a MAC address.\n\nThis patch fixes these remaining issues:\n\n- Makes mlx5_vdpa_destroy_mr_resources() return early if called on\n uninitialized resources.\n\n- Moves mlx5_cmd_init_async_ctx() early on during device addition\n because it can't fail. This means that mlx5_cmd_cleanup_async_ctx()\n also can't fail. To mirror this, move the call site of\n mlx5_cmd_cleanup_async_ctx() in mlx5_vdpa_free().\n\nAn additional comment was added in mlx5_vdpa_free() to document\nthe expectations of functions called from this context.\n\nSplat:\n\n mlx5_core 0000:b5:03.2: mlx5_vdpa_dev_add:3950:(pid 2306) warning: No mac address provisioned?\n ------------[ cut here ]------------\n WARNING: CPU: 13 PID: 2306 at kernel/workqueue.c:4207 __flush_work+0x9a/0xb0\n [...]\n Call Trace:\n <TASK>\n ? __try_to_del_timer_sync+0x61/0x90\n ? __timer_delete_sync+0x2b/0x40\n mlx5_vdpa_destroy_mr_resources+0x1c/0x40 [mlx5_vdpa]\n mlx5_vdpa_free+0x45/0x160 [mlx5_vdpa]\n vdpa_release_dev+0x1e/0x50 [vdpa]\n device_release+0x31/0x90\n kobject_cleanup+0x37/0x130\n mlx5_vdpa_dev_add+0x327/0x890 [mlx5_vdpa]\n vdpa_nl_cmd_dev_add_set_doit+0x2c1/0x4d0 [vdpa]\n genl_family_rcv_msg_doit+0xd8/0x130\n genl_family_rcv_msg+0x14b/0x220\n ? __pfx_vdpa_nl_cmd_dev_add_set_doit+0x10/0x10 [vdpa]\n genl_rcv_msg+0x47/0xa0\n ? __pfx_genl_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x53/0x100\n genl_rcv+0x24/0x40\n netlink_unicast+0x27b/0x3b0\n netlink_sendmsg+0x1f7/0x430\n __sys_sendto+0x1fa/0x210\n ? ___pte_offset_map+0x17/0x160\n ? next_uptodate_folio+0x85/0x2b0\n ? percpu_counter_add_batch+0x51/0x90\n ? filemap_map_pages+0x515/0x660\n __x64_sys_sendto+0x20/0x30\n do_syscall_64+0x7b/0x2c0\n ? do_read_fault+0x108/0x220\n ? do_pte_missing+0x14a/0x3e0\n ? __handle_mm_fault+0x321/0x730\n ? count_memcg_events+0x13f/0x180\n ? handle_mm_fault+0x1fb/0x2d0\n ? do_user_addr_fault+0x20c/0x700\n ? syscall_exit_work+0x104/0x140\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f0c25b0feca\n [...]\n ---[ end trace 0000000000000000 ]---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/vdpa/mlx5/core/mr.c", "drivers/vdpa/mlx5/net/mlx5_vnet.c"], "versions": [{"version": "83e445e64f48bdae3f25013e788fcf592f142576", "lessThan": "37f26b9013b46457b0a96633fc3a7dc977d8beb1", "status": "affected", "versionType": "git"}, {"version": "83e445e64f48bdae3f25013e788fcf592f142576", "lessThan": "cf4fc23d0d3d5b89b36f0d79f2674510bb574d8e", "status": "affected", "versionType": "git"}, {"version": "83e445e64f48bdae3f25013e788fcf592f142576", "lessThan": "6de4ef950dd56a6a81daf92d8a1d864fc6a56971", "status": "affected", "versionType": "git"}, {"version": "83e445e64f48bdae3f25013e788fcf592f142576", "lessThan": "cc51a66815999afb7e9cd845968de4fdf07567b7", "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/vdpa/mlx5/core/mr.c", "drivers/vdpa/mlx5/net/mlx5_vnet.c"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.42", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15.10", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.1", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "6.12", "versionEndExcluding": "6.12.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.15.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.16.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/37f26b9013b46457b0a96633fc3a7dc977d8beb1"}, {"url": "https://git.kernel.org/stable/c/cf4fc23d0d3d5b89b36f0d79f2674510bb574d8e"}, {"url": "https://git.kernel.org/stable/c/6de4ef950dd56a6a81daf92d8a1d864fc6a56971"}, {"url": "https://git.kernel.org/stable/c/cc51a66815999afb7e9cd845968de4fdf07567b7"}], "title": "vdpa/mlx5: Fix release of uninitialized resources on error path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/vdpa/mlx5/core/mr.c", "drivers/vdpa/mlx5/net/mlx5_vnet.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "37f26b9013b46457b0a96633fc3a7dc977d8beb1", "status": "affected", "version": "83e445e64f48bdae3f25013e788fcf592f142576", "versionType": "git"}, {"lessThan": "cf4fc23d0d3d5b89b36f0d79f2674510bb574d8e", "status": "affected", "version": "83e445e64f48bdae3f25013e788fcf592f142576", "versionType": "git"}, {"lessThan": "6de4ef950dd56a6a81daf92d8a1d864fc6a56971", "status": "affected", "version": "83e445e64f48bdae3f25013e788fcf592f142576", "versionType": "git"}, {"lessThan": "cc51a66815999afb7e9cd845968de4fdf07567b7", "status": "affected", "version": "83e445e64f48bdae3f25013e788fcf592f142576", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/vdpa/mlx5/core/mr.c", "drivers/vdpa/mlx5/net/mlx5_vnet.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.42", "versionType": "semver"}, {"lessThanOrEqual": "6.15.*", "status": "unaffected", "version": "6.15.10", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5EB0B979-24B9-47D9-8239-A091CAD681B3", "versionEndExcluding": "6.12.42", "versionStartIncluding": "6.12.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5890C690-B295-40C2-9121-FF5F987E5142", "versionEndExcluding": "6.15.10", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "58182352-D7DF-4CC9-841E-03C1D852C3FB", "versionEndExcluding": "6.16.1", "versionStartIncluding": "6.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:-:*:*:*:*:*:*", "matchCriteriaId": "0E698080-7669-4132-8817-4C674EEBCE54", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/mlx5: Fix release of uninitialized resources on error path\n\nThe commit in the fixes tag made sure that mlx5_vdpa_free()\nis the single entrypoint for removing the vdpa device resources\nadded in mlx5_vdpa_dev_add(), even in the cleanup path of\nmlx5_vdpa_dev_add().\n\nThis means that all functions from mlx5_vdpa_free() should be able to\nhandle uninitialized resources. This was not the case though:\nmlx5_vdpa_destroy_mr_resources() and mlx5_cmd_cleanup_async_ctx()\nwere not able to do so. This caused the splat below when adding\na vdpa device without a MAC address.\n\nThis patch fixes these remaining issues:\n\n- Makes mlx5_vdpa_destroy_mr_resources() return early if called on\n uninitialized resources.\n\n- Moves mlx5_cmd_init_async_ctx() early on during device addition\n because it can't fail. This means that mlx5_cmd_cleanup_async_ctx()\n also can't fail. To mirror this, move the call site of\n mlx5_cmd_cleanup_async_ctx() in mlx5_vdpa_free().\n\nAn additional comment was added in mlx5_vdpa_free() to document\nthe expectations of functions called from this context.\n\nSplat:\n\n mlx5_core 0000:b5:03.2: mlx5_vdpa_dev_add:3950:(pid 2306) warning: No mac address provisioned?\n ------------[ cut here ]------------\n WARNING: CPU: 13 PID: 2306 at kernel/workqueue.c:4207 __flush_work+0x9a/0xb0\n [...]\n Call Trace:\n <TASK>\n ? __try_to_del_timer_sync+0x61/0x90\n ? __timer_delete_sync+0x2b/0x40\n mlx5_vdpa_destroy_mr_resources+0x1c/0x40 [mlx5_vdpa]\n mlx5_vdpa_free+0x45/0x160 [mlx5_vdpa]\n vdpa_release_dev+0x1e/0x50 [vdpa]\n device_release+0x31/0x90\n kobject_cleanup+0x37/0x130\n mlx5_vdpa_dev_add+0x327/0x890 [mlx5_vdpa]\n vdpa_nl_cmd_dev_add_set_doit+0x2c1/0x4d0 [vdpa]\n genl_family_rcv_msg_doit+0xd8/0x130\n genl_family_rcv_msg+0x14b/0x220\n ? __pfx_vdpa_nl_cmd_dev_add_set_doit+0x10/0x10 [vdpa]\n genl_rcv_msg+0x47/0xa0\n ? __pfx_genl_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x53/0x100\n genl_rcv+0x24/0x40\n netlink_unicast+0x27b/0x3b0\n netlink_sendmsg+0x1f7/0x430\n __sys_sendto+0x1fa/0x210\n ? ___pte_offset_map+0x17/0x160\n ? next_uptodate_folio+0x85/0x2b0\n ? percpu_counter_add_batch+0x51/0x90\n ? filemap_map_pages+0x515/0x660\n __x64_sys_sendto+0x20/0x30\n do_syscall_64+0x7b/0x2c0\n ? do_read_fault+0x108/0x220\n ? do_pte_missing+0x14a/0x3e0\n ? __handle_mm_fault+0x321/0x730\n ? count_memcg_events+0x13f/0x180\n ? handle_mm_fault+0x1fb/0x2d0\n ? do_user_addr_fault+0x20c/0x700\n ? syscall_exit_work+0x104/0x140\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f0c25b0feca\n [...]\n ---[ end trace 0000000000000000 ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vdpa/mlx5: Correcci\u00f3n de la liberaci\u00f3n de recursos no inicializados en la ruta de error el commit en la etiqueta fixes asegur\u00f3 que mlx5_vdpa_free() sea el \u00fanico punto de entrada para eliminar los recursos del dispositivo vdpa agregados en mlx5_vdpa_dev_add(), incluso en la ruta de limpieza de mlx5_vdpa_dev_add(). Esto significa que todas las funciones de mlx5_vdpa_free() deber\u00edan poder manejar recursos no inicializados. Sin embargo, este no fue el caso: mlx5_vdpa_destroy_mr_resources() y mlx5_cmd_cleanup_async_ctx() no pudieron hacerlo. Esto caus\u00f3 el splat a continuaci\u00f3n al agregar un dispositivo vdpa sin una direcci\u00f3n MAC. Este parche corrige estos problemas restantes: - Hace que mlx5_vdpa_destroy_mr_resources() regrese antes si se llama en recursos no inicializados. - Se mueve mlx5_cmd_init_async_ctx() al principio de la adici\u00f3n del dispositivo, ya que no puede fallar. Esto significa que mlx5_cmd_cleanup_async_ctx() tampoco puede fallar. Para reflejar esto, mueva el sitio de llamada de mlx5_cmd_cleanup_async_ctx() a mlx5_vdpa_free(). Se a\u00f1adi\u00f3 un comentario adicional en mlx5_vdpa_free() para documentar las expectativas de las funciones llamadas desde este contexto. Splat: mlx5_core 0000:b5:03.2: mlx5_vdpa_dev_add:3950:(pid 2306) advertencia: \u00bfNo se ha proporcionado ninguna direcci\u00f3n MAC? ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 13 PID: 2306 en kernel/workqueue.c:4207 __flush_work+0x9a/0xb0 [...] Rastreo de llamadas: ? __try_to_del_timer_sync+0x61/0x90 ? __timer_delete_sync+0x2b/0x40 mlx5_vdpa_destroy_mr_resources+0x1c/0x40 [mlx5_vdpa] mlx5_vdpa_free+0x45/0x160 [mlx5_vdpa] vdpa_release_dev+0x1e/0x50 [vdpa] device_release+0x31/0x90 kobject_cleanup+0x37/0x130 mlx5_vdpa_dev_add+0x327/0x890 [mlx5_vdpa] vdpa_nl_cmd_dev_add_set_doit+0x2c1/0x4d0 [vdpa] genl_family_rcv_msg_doit+0xd8/0x130 genl_family_rcv_msg+0x14b/0x220 ? __pfx_vdpa_nl_cmd_dev_add_set_doit+0x10/0x10 [vdpa] genl_rcv_msg+0x47/0xa0 ? __pfx_genl_rcv_msg+0x10/0x10 netlink_rcv_skb+0x53/0x100 genl_rcv+0x24/0x40 netlink_unicast+0x27b/0x3b0 netlink_sendmsg+0x1f7/0x430 __sys_sendto+0x1fa/0x210 ? ___pte_offset_map+0x17/0x160 ? next_uptodate_folio+0x85/0x2b0 ? percpu_counter_add_batch+0x51/0x90 ? filemap_map_pages+0x515/0x660 __x64_sys_sendto+0x20/0x30 do_syscall_64+0x7b/0x2c0 ? do_read_fault+0x108/0x220 ? do_pte_missing+0x14a/0x3e0 ? __handle_mm_fault+0x321/0x730 ? count_memcg_events+0x13f/0x180 ? handle_mm_fault+0x1fb/0x2d0 ? do_user_addr_fault+0x20c/0x700 ? syscall_exit_work+0x104/0x140 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f0c25b0feca [...] ---[ fin de seguimiento 0000000000000000 ]---"}], "id": "CVE-2025-38628", "lastModified": "2026-06-17T09:17:14.850", "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"}]}, "published": "2025-08-22T16:15:36.470", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/37f26b9013b46457b0a96633fc3a7dc977d8beb1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6de4ef950dd56a6a81daf92d8a1d864fc6a56971"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cc51a66815999afb7e9cd845968de4fdf07567b7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cf4fc23d0d3d5b89b36f0d79f2674510bb574d8e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-908"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: vdpa/mlx5: Fix release of uninitialized resources on error path", "id": "2390410", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2390410"}, "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-763", "details": ["No description is available for this CVE."], "name": "CVE-2025-38628", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38628\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38628\nhttps://lore.kernel.org/linux-cve-announce/2025082231-CVE-2025-38628-27f4@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-08-23T10:55:23.709935+00:00", "updated": "2025-08-23T10:55:23.710005+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}