CVE-2026-89606

{"id": "CVE-2026-89606", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "df5f375a6151ef71f636da044bcef90c26697255", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "5668121974eb7f7aa82793a9d0d13abadb8904dc", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "2e5afed9503dd1d85004c09503adc2cb584c0188", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "414a0f04feb06f03523edf7e2a8be1d7f1a9b160", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "9d88391bbed76eb091cddd50b0af87b1c6f22589", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "b31da1ecf13929a8d7f8d2727843d2fe35396b75", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "d2869768eab5648e6edc05f47e0716e5328e6681", "versionType": "git"}, {"status": "affected", "version": "9c79f34f7ee71cd28272332b424ca64b2be006ab", "lessThan": "e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f", "versionType": "git"}], "programFiles": ["fs/ecryptfs/keystore.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.29"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.29", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.221", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.188", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.157", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.109", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.50", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.4", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/ecryptfs/keystore.c"], "defaultStatus": "affected"}]}], "published": "2026-09-11T20:19:45.603", "references": [{"url": "https://git.kernel.org/stable/c/2e5afed9503dd1d85004c09503adc2cb584c0188", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/414a0f04feb06f03523edf7e2a8be1d7f1a9b160", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5668121974eb7f7aa82793a9d0d13abadb8904dc", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9d88391bbed76eb091cddd50b0af87b1c6f22589", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b31da1ecf13929a8d7f8d2727843d2fe35396b75", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d2869768eab5648e6edc05f47e0716e5328e6681", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/df5f375a6151ef71f636da044bcef90c26697255", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e97bbe1b2bd82ec2ae37ad2e4965b4d3e78bbf7f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: reject too-small tag 70 packets\n\necryptfs_parse_tag_70_packet() subtracts fixed metadata fields from the\nparsed packet body size to derive the encrypted filename size. A\nmalformed packet with a body smaller than those fixed fields can underflow\nthat size calculation.\n\nReject tag 70 packets before the subtraction unless the body contains the\nsignature, cipher code, and at least one byte of encrypted filename data."}], "lastModified": "2026-09-14T13:19:14.747", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}