CVE-2025-39949
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: qed: Don't collect too many protection override GRC elements In the protection override dump path, the firmware can return far too many GRC elements, resulting in attempting to write past the end of the previously-kmalloc'ed dump buffer. This will result in a kernel panic with reason: BUG: unable to handle kernel paging request at ADDRESS where "ADDRESS" is just past the end of the protection override dump buffer. The start address of the buffer is: p_hwfn->cdev->dbg_features[DBG_FEATURE_PROTECTION_OVERRIDE].dump_buf and the size of the buffer is buf_size in the same data structure. The panic can be arrived at from either the qede Ethernet driver path: [exception RIP: qed_grc_dump_addr_range+0x108] qed_protection_override_dump at ffffffffc02662ed [qed] qed_dbg_protection_override_dump at ffffffffc0267792 [qed] qed_dbg_feature at ffffffffc026aa8f [qed] qed_dbg_all_data at ffffffffc026b211 [qed] qed_fw_fatal_reporter_dump at ffffffffc027298a [qed] devlink_health_do_dump at ffffffff82497f61 devlink_health_report at ffffffff8249cf29 qed_report_fatal_error at ffffffffc0272baf [qed] qede_sp_task at ffffffffc045ed32 [qede] process_one_work at ffffffff81d19783 or the qedf storage driver path: [exception RIP: qed_grc_dump_addr_range+0x108] qed_protection_override_dump at ffffffffc068b2ed [qed] qed_dbg_protection_override_dump at ffffffffc068c792 [qed] qed_dbg_feature at ffffffffc068fa8f [qed] qed_dbg_all_data at ffffffffc0690211 [qed] qed_fw_fatal_reporter_dump at ffffffffc069798a [qed] devlink_health_do_dump at ffffffff8aa95e51 devlink_health_report at ffffffff8aa9ae19 qed_report_fatal_error at ffffffffc0697baf [qed] qed_hw_err_notify at ffffffffc06d32d7 [qed] qed_spq_post at ffffffffc06b1011 [qed] qed_fcoe_destroy_conn at ffffffffc06b2e91 [qed] qedf_cleanup_fcport at ffffffffc05e7597 [qedf] qedf_rport_event_handler at ffffffffc05e7bf7 [qedf] fc_rport_work at ffffffffc02da715 [libfc] process_one_work at ffffffff8a319663 Resolve this by clamping the firmware's return value to the maximum number of legal elements the firmware should return.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-10-04 08:15:48.120000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-39949",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-10-04T08:15:48.120",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqed: Don't collect too many protection override GRC elements\n\nIn the protection override dump path, the firmware can return far too\nmany GRC elements, resulting in attempting to write past the end of the\npreviously-kmalloc'ed dump buffer.\n\nThis will result in a kernel panic with reason:\n\n BUG: unable to handle kernel paging request at ADDRESS\n\nwhere \"ADDRESS\" is just past the end of the protection override dump\nbuffer. The start address of the buffer is:\n p_hwfn->cdev->dbg_features[DBG_FEATURE_PROTECTION_OVERRIDE].dump_buf\nand the size of the buffer is buf_size in the same data structure.\n\nThe panic can be arrived at from either the qede Ethernet driver path:\n\n [exception RIP: qed_grc_dump_addr_range+0x108]\n qed_protection_override_dump at ffffffffc02662ed [qed]\n qed_dbg_protection_override_dump at ffffffffc0267792 [qed]\n qed_dbg_feature at ffffffffc026aa8f [qed]\n qed_dbg_all_data at ffffffffc026b211 [qed]\n qed_fw_fatal_reporter_dump at ffffffffc027298a [qed]\n devlink_health_do_dump at ffffffff82497f61\n devlink_health_report at ffffffff8249cf29\n qed_report_fatal_error at ffffffffc0272baf [qed]\n qede_sp_task at ffffffffc045ed32 [qede]\n process_one_work at ffffffff81d19783\n\nor the qedf storage driver path:\n\n [exception RIP: qed_grc_dump_addr_range+0x108]\n qed_protection_override_dump at ffffffffc068b2ed [qed]\n qed_dbg_protection_override_dump at ffffffffc068c792 [qed]\n qed_dbg_feature at ffffffffc068fa8f [qed]\n qed_dbg_all_data at ffffffffc0690211 [qed]\n qed_fw_fatal_reporter_dump at ffffffffc069798a [qed]\n devlink_health_do_dump at ffffffff8aa95e51\n devlink_health_report at ffffffff8aa9ae19\n qed_report_fatal_error at ffffffffc0697baf [qed]\n qed_hw_err_notify at ffffffffc06d32d7 [qed]\n qed_spq_post at ffffffffc06b1011 [qed]\n qed_fcoe_destroy_conn at ffffffffc06b2e91 [qed]\n qedf_cleanup_fcport at ffffffffc05e7597 [qedf]\n qedf_rport_event_handler at ffffffffc05e7bf7 [qedf]\n fc_rport_work at ffffffffc02da715 [libfc]\n process_one_work at ffffffff8a319663\n\nResolve this by clamping the firmware's return value to the maximum\nnumber of legal elements the firmware should return."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nqed: No recolectar demasiados elementos GRC de anulación de protección\n\nEn la ruta de volcado de anulación de protección, el firmware puede devolver demasiados elementos GRC, lo que resulta en un intento de escribir más allá del final del búfer de volcado previamente asignado con kmalloc.\n\nEsto resultará en un pánico del kernel con la razón:\n\n BUG: no se puede manejar la solicitud de paginación del kernel en ADDRESS\n\ndonde 'ADDRESS' está justo después del final del búfer de volcado de anulación de protección. La dirección de inicio del búfer es:\n p_hwfn->cdev->dbg_features[DBG_FEATURE_PROTECTION_OVERRIDE].dump_buf\ny el tamaño del búfer es buf_size en la misma estructura de datos.\n\nEl pánico puede originarse desde la ruta del controlador Ethernet qede:\n\n [exception RIP: qed_grc_dump_addr_range+0x108]\n qed_protection_override_dump at ffffffffc02662ed [qed]\n qed_dbg_protection_override_dump at ffffffffc0267792 [qed]\n qed_dbg_feature at ffffffffc026aa8f [qed]\n qed_dbg_all_data at ffffffffc026b211 [qed]\n qed_fw_fatal_reporter_dump at ffffffffc027298a [qed]\n devlink_health_do_dump at ffffffff82497f61\n devlink_health_report at ffffffff8249cf29\n qed_report_fatal_error at ffffffffc0272baf [qed]\n qede_sp_task at ffffffffc045ed32 [qede]\n process_one_work at ffffffff81d19783\n\no la ruta del controlador de almacenamiento qedf:\n\n [exception RIP: qed_grc_dump_addr_range+0x108]\n qed_protection_override_dump at ffffffffc068b2ed [qed]\n qed_dbg_protection_override_dump at ffffffffc068c792 [qed]\n qed_dbg_feature at ffffffffc068fa8f [qed]\n qed_dbg_all_data at ffffffffc0690211 [qed]\n qed_fw_fatal_reporter_dump at ffffffffc069798a [qed]\n devlink_health_do_dump at ffffffff8aa95e51\n devlink_health_report at ffffffff8aa9ae19\n qed_report_fatal_error at ffffffffc0697baf [qed]\n qed_hw_err_notify at ffffffffc06d32d7 [qed]\n qed_spq_post at ffffffffc06b1011 [qed]\n qed_fcoe_destroy_conn at ffffffffc06b2e91 [qed]\n qedf_cleanup_fcport at ffffffffc05e7597 [qedf]\n qedf_rport_event_handler at ffffffffc05e7bf7 [qedf]\n fc_rport_work at ffffffffc02da715 [libfc]\n process_one_work at ffffffff8a319663\n\nEsto se resuelve limitando el valor de retorno del firmware al número máximo de elementos legales que el firmware debería devolver."
}
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"description": [
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