cxl/fwctl: Fix __fortify_panic
Fix a runtime assertion in cxlctl_get_supported_features(). Fortify
complains that it is potentially overflowing the entries array per
__counted_by_le(num_entries). Quiet the false positive by initializing
@num_entries earlier.
memcpy: detected buffer overflow: 48 byte write of buffer size 0
WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#7: fwctl/1398
RIP: 0010:__fortify_report+0x50/0xa0
Call Trace:
__fortify_panic+0xd/0xf
cxlctl_get_supported_features.cold+0x23/0x35 [cxl_core]
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data available yet.
No vendor fix or workaround currently provided.
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Tracking
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Fri, 28 Aug 2026 07:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: cxl/fwctl: Fix __fortify_panic Fix a runtime assertion in cxlctl_get_supported_features(). Fortify complains that it is potentially overflowing the entries array per __counted_by_le(num_entries). Quiet the false positive by initializing @num_entries earlier. memcpy: detected buffer overflow: 48 byte write of buffer size 0 WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#7: fwctl/1398 RIP: 0010:__fortify_report+0x50/0xa0 Call Trace: __fortify_panic+0xd/0xf cxlctl_get_supported_features.cold+0x23/0x35 [cxl_core] | |
| Title | cxl/fwctl: Fix __fortify_panic | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-08-28T06:48:52.650Z
Reserved: 2026-08-26T14:34:25.778Z
Link: CVE-2026-80640
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-08-28T08:16:48.910
Modified: 2026-08-28T08:16:48.910
Link: CVE-2026-80640
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-08-28T09:30:18Z
No weakness.