cxl/test: Fix __fortify_panic

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-80639
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:48 UTC
Updated2026-08-28 08:16:48 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: cxl/test: Fix __fortify_panic Fix a runtime assertion in setup_xor_mapping(). Fortify complains that it is potentially overflowing the xormaps array per __counted_by(nr_maps). Quiet the false positive by initializing @nr_maps earlier. memcpy: detected buffer overflow: 32 byte write of buffer size 0 WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#8: modprobe/2728 Call Trace: __fortify_panic+0xd/0xf setup_xor_mapping+0x6c/0xa0 [cxl_translate] [ dj: Fixed up @nr_entries to @nr_maps in commit log. ]

Risk And Classification

EPSS: 0.001710000 probability, percentile 0.066860000 (date 2026-08-30)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 06377c54a133621d61fa76cdcea85077c5b958f4 8c4f27a7f364eab514d2fa55c11f39d505122f1b git Not specified
CNA Linux Linux affected 06377c54a133621d61fa76cdcea85077c5b958f4 08326b92c7a414a73b5b308d1daf0e91e0134dfc git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/8c4f27a7f364eab514d2fa55c11f39d505122f1b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/08326b92c7a414a73b5b308d1daf0e91e0134dfc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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