{"api_version":"1","generated_at":"2026-09-02T17:39:27+00:00","cve":"CVE-2026-80639","urls":{"html":"https://cve.report/CVE-2026-80639","api":"https://cve.report/api/cve/CVE-2026-80639.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-80639","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80639"},"summary":{"title":"cxl/test: Fix __fortify_panic","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/test: Fix __fortify_panic\n\nFix a runtime assertion in setup_xor_mapping(). Fortify complains that it\nis potentially overflowing the xormaps array per __counted_by(nr_maps).\nQuiet the false positive by initializing @nr_maps earlier.\n\n memcpy: detected buffer overflow: 32 byte write of buffer size 0\n WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#8: modprobe/2728\n Call Trace:\n  __fortify_panic+0xd/0xf\n  setup_xor_mapping+0x6c/0xa0 [cxl_translate]\n\n[ dj: Fixed up @nr_entries to @nr_maps in commit log. ]","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-28 08:16:48","updated_at":"2026-08-28 08:16:48"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/8c4f27a7f364eab514d2fa55c11f39d505122f1b","name":"https://git.kernel.org/stable/c/8c4f27a7f364eab514d2fa55c11f39d505122f1b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/08326b92c7a414a73b5b308d1daf0e91e0134dfc","name":"https://git.kernel.org/stable/c/08326b92c7a414a73b5b308d1daf0e91e0134dfc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80639","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80639","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 06377c54a133621d61fa76cdcea85077c5b958f4 8c4f27a7f364eab514d2fa55c11f39d505122f1b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 06377c54a133621d61fa76cdcea85077c5b958f4 08326b92c7a414a73b5b308d1daf0e91e0134dfc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"80639","cve":"CVE-2026-80639","epss":"0.001710000","percentile":"0.066860000","score_date":"2026-08-30","updated_at":"2026-08-31 00:14:06"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["tools/testing/cxl/test/cxl_translate.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"8c4f27a7f364eab514d2fa55c11f39d505122f1b","status":"affected","version":"06377c54a133621d61fa76cdcea85077c5b958f4","versionType":"git"},{"lessThan":"08326b92c7a414a73b5b308d1daf0e91e0134dfc","status":"affected","version":"06377c54a133621d61fa76cdcea85077c5b958f4","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["tools/testing/cxl/test/cxl_translate.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/test: Fix __fortify_panic\n\nFix a runtime assertion in setup_xor_mapping(). Fortify complains that it\nis potentially overflowing the xormaps array per __counted_by(nr_maps).\nQuiet the false positive by initializing @nr_maps earlier.\n\n memcpy: detected buffer overflow: 32 byte write of buffer size 0\n WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#8: modprobe/2728\n Call Trace:\n  __fortify_panic+0xd/0xf\n  setup_xor_mapping+0x6c/0xa0 [cxl_translate]\n\n[ dj: Fixed up @nr_entries to @nr_maps in commit log. ]"}],"providerMetadata":{"dateUpdated":"2026-08-28T06:48:52.045Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/8c4f27a7f364eab514d2fa55c11f39d505122f1b"},{"url":"https://git.kernel.org/stable/c/08326b92c7a414a73b5b308d1daf0e91e0134dfc"}],"title":"cxl/test: Fix __fortify_panic","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-80639","datePublished":"2026-08-28T06:48:52.045Z","dateReserved":"2026-08-26T14:34:25.777Z","dateUpdated":"2026-08-28T06:48:52.045Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-28 08:16:48","lastModifiedDate":"2026-08-28 08:16:48","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"80639","Ordinal":"1","Title":"cxl/test: Fix __fortify_panic","CVE":"CVE-2026-80639","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"80639","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/test: Fix __fortify_panic\n\nFix a runtime assertion in setup_xor_mapping(). Fortify complains that it\nis potentially overflowing the xormaps array per __counted_by(nr_maps).\nQuiet the false positive by initializing @nr_maps earlier.\n\n memcpy: detected buffer overflow: 32 byte write of buffer size 0\n WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#8: modprobe/2728\n Call Trace:\n  __fortify_panic+0xd/0xf\n  setup_xor_mapping+0x6c/0xa0 [cxl_translate]\n\n[ dj: Fixed up @nr_entries to @nr_maps in commit log. ]","Type":"Description","Title":"cxl/test: Fix __fortify_panic"}]}}}