In the Linux kernel, the following vulnerability has been resolved:
EDAC/igen6: Fix NULL pointer dereference
A kernel panic was reported with the following kernel log:
EDAC igen6: Expected 2 mcs, but only 1 detected.
BUG: unable to handle page fault for address: 000000000000d570
...
Hardware name: Notebook V54x_6x_TU/V54x_6x_TU, BIOS Dasharo (coreboot+UEFI) v0.9.0 07/17/2024
RIP: e030:ecclog_handler+0x7e/0xf0 [igen6_edac]
...
igen6_probe+0x2a0/0x343 [igen6_edac]
...
igen6_init+0xc5/0xff0 [igen6_edac]
...
This issue occurred because one memory controller was disabled by
the BIOS but the igen6_edac driver still checked all the memory
controllers, including this absent one, to identify the source of
the error. Accessing the null MMIO for the absent memory controller
resulted in the oops above.
Fix this issue by reverting the configuration structure to non-const
and updating the field 'res_cfg->num_imc' to reflect the number of
detected memory controllers.
Metrics
Affected Vendors & Products
References
History
Sun, 06 Jul 2025 12:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
References |
| |
Metrics |
threat_severity
|
cvssV3_1
|
Fri, 04 Jul 2025 13:45:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Description | In the Linux kernel, the following vulnerability has been resolved: EDAC/igen6: Fix NULL pointer dereference A kernel panic was reported with the following kernel log: EDAC igen6: Expected 2 mcs, but only 1 detected. BUG: unable to handle page fault for address: 000000000000d570 ... Hardware name: Notebook V54x_6x_TU/V54x_6x_TU, BIOS Dasharo (coreboot+UEFI) v0.9.0 07/17/2024 RIP: e030:ecclog_handler+0x7e/0xf0 [igen6_edac] ... igen6_probe+0x2a0/0x343 [igen6_edac] ... igen6_init+0xc5/0xff0 [igen6_edac] ... This issue occurred because one memory controller was disabled by the BIOS but the igen6_edac driver still checked all the memory controllers, including this absent one, to identify the source of the error. Accessing the null MMIO for the absent memory controller resulted in the oops above. Fix this issue by reverting the configuration structure to non-const and updating the field 'res_cfg->num_imc' to reflect the number of detected memory controllers. | |
Title | EDAC/igen6: Fix NULL pointer dereference | |
References |
|

Status: PUBLISHED
Assigner: Linux
Published: 2025-07-04T13:37:06.717Z
Updated: 2025-07-04T13:37:06.717Z
Reserved: 2025-04-16T04:51:23.992Z
Link: CVE-2025-38178

No data.

Status : Awaiting Analysis
Published: 2025-07-04T14:15:24.233
Modified: 2025-07-08T16:18:53.607
Link: CVE-2025-38178
