crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one
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.
CVE-2026-74404
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-74404
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2",
"lessThan": "830c1f3e71989448652973375ef5e39b6ede47a3",
"versionType": "git"
},
{
"status": "affected",
"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2",
"lessThan": "c5c79d92da0f9a09f48be5e2aabed2d6d1a96294",
"versionType": "git"
},
{
"status": "affected",
"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2",
"lessThan": "af7341616b742ad2c374a90998bd650a035f694d",
"versionType": "git"
},
{
"status": "affected",
"version": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2",
"lessThan": "1b864b6cb213bbd7b406e9b2e98c962077f300df",
"versionType": "git"
}
],
"programFiles": [
"drivers/crypto/ccp/sev-dev.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.9"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.9",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/crypto/ccp/sev-dev.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-74404
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #33140 · Revision 1
- Added to Heist Feed
- Publisher date