CVE-2026-74404

CVE CVE-2026-74404EUVD EUVD-2026-59551Published 2026-08-15T05:59:14.000ZLast changed 2026-08-17T05:46:46.000ZCVSS 7.8

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.18.40; 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <af7341616b742ad2c374a90998bd650a035f694d; 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <c5c79d92da0f9a09f48be5e2aabed2d6d1a96294; 6.9; patch: 7.1.5; patch: 7.2; 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <1b864b6cb213bbd7b406e9b2e98c962077f300df; patch: 0; 1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <830c1f3e71989448652973375ef5e39b6ede47a3; patch: 6.12.97

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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