CVE-2026-74404High· 7.8▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one Sashiko notes: > regarding the bounds check in snp_filter_reserved_mem_regions() > called via walk_iome…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one
Sashiko notes:
regarding the bounds check in snp_filter_reserved_mem_regions() called via walk_iomem_res_desc(): does the check if ((range_list->num_elements * 16 + 8) > PAGE_SIZE) allow an off-by-one heap buffer overflow?
If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096. Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated PAGE_SIZE buffer.
Fix this by accounting for the entry about to be written to, in addition to the entries that are already allocated.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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