CVE-2026-80639
In 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. ]
Affected versions
Linux kernel versions
6.19
and later are affected. Fixed in
7.1.5,
7.2
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-80639?
CVE-2026-80639 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.19 onward and has been patched in 7.1.5 and 7.2. CVE-2026-80639 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-80639?
Yes. CVE-2026-80639 has been patched. Fixed versions include 7.1.5 and 7.2. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-80639 actively exploited?
No. CVE-2026-80639 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.