{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74404", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.892Z", "datePublished": "2026-08-15T05:59:14.073Z", "dateUpdated": "2026-08-15T05:59:14.073Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-15T05:59:14.073Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one\n\nSashiko notes:\n\n> regarding the bounds check in snp_filter_reserved_mem_regions()\n> called via walk_iomem_res_desc(): does the check\n> if ((range_list->num_elements * 16 + 8) > PAGE_SIZE)\n> allow an off-by-one heap buffer overflow?\n>\n> If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096.\n> Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count\n> (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated\n> PAGE_SIZE buffer.\n\nFix this by accounting for the entry about to be written to, in addition to\nthe entries that are already allocated."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/ccp/sev-dev.c"], "versions": [{"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "lessThan": "830c1f3e71989448652973375ef5e39b6ede47a3", "status": "affected", "versionType": "git"}, {"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "lessThan": "c5c79d92da0f9a09f48be5e2aabed2d6d1a96294", "status": "affected", "versionType": "git"}, {"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "lessThan": "af7341616b742ad2c374a90998bd650a035f694d", "status": "affected", "versionType": "git"}, {"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "lessThan": "1b864b6cb213bbd7b406e9b2e98c962077f300df", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/crypto/ccp/sev-dev.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.9", "versionEndExcluding": "7.2-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/830c1f3e71989448652973375ef5e39b6ede47a3"}, {"url": "https://git.kernel.org/stable/c/c5c79d92da0f9a09f48be5e2aabed2d6d1a96294"}, {"url": "https://git.kernel.org/stable/c/af7341616b742ad2c374a90998bd650a035f694d"}, {"url": "https://git.kernel.org/stable/c/1b864b6cb213bbd7b406e9b2e98c962077f300df"}], "title": "crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/crypto/ccp/sev-dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "830c1f3e71989448652973375ef5e39b6ede47a3", "status": "affected", "version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "versionType": "git"}, {"lessThan": "c5c79d92da0f9a09f48be5e2aabed2d6d1a96294", "status": "affected", "version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "versionType": "git"}, {"lessThan": "af7341616b742ad2c374a90998bd650a035f694d", "status": "affected", "version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "versionType": "git"}, {"lessThan": "1b864b6cb213bbd7b406e9b2e98c962077f300df", "status": "affected", "version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/crypto/ccp/sev-dev.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"lessThan": "6.9", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one\n\nSashiko notes:\n\n> regarding the bounds check in snp_filter_reserved_mem_regions()\n> called via walk_iomem_res_desc(): does the check\n> if ((range_list->num_elements * 16 + 8) > PAGE_SIZE)\n> allow an off-by-one heap buffer overflow?\n>\n> If range_list->num_elements is 255, 255 * 16 + 8 = 4088, which is <= 4096.\n> Writing range->base (8 bytes) fills 4088-4095, but writing range->page_count\n> (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated\n> PAGE_SIZE buffer.\n\nFix this by accounting for the entry about to be written to, in addition to\nthe entries that are already allocated."}], "id": "CVE-2026-74404", "lastModified": "2026-08-15T06:22:42.433", "metrics": {}, "published": "2026-08-15T06:22:42.433", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b864b6cb213bbd7b406e9b2e98c962077f300df"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/830c1f3e71989448652973375ef5e39b6ede47a3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af7341616b742ad2c374a90998bd650a035f694d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5c79d92da0f9a09f48be5e2aabed2d6d1a96294"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{}