{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40031", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.153Z", "datePublished": "2025-10-28T11:48:13.644Z", "dateUpdated": "2026-05-11T21:41:08.887Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:41:08.887Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: fix register_shm_helper()\n\nIn register_shm_helper(), fix incorrect error handling for a call to\niov_iter_extract_pages(). A case is missing for when\niov_iter_extract_pages() only got some pages and return a number larger\nthan 0, but not the requested amount.\n\nThis fixes a possible NULL pointer dereference following a bad input from\nioctl(TEE_IOC_SHM_REGISTER) where parts of the buffer isn't mapped."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/tee/tee_shm.c"], "versions": [{"version": "7bdee41575919773818e525ea19e54eb817770af", "lessThan": "9338093db954918558677a468d32e77041c65167", "status": "affected", "versionType": "git"}, {"version": "7bdee41575919773818e525ea19e54eb817770af", "lessThan": "6a7874ab814ce12003c46a92f7afc9b035c8e8e9", "status": "affected", "versionType": "git"}, {"version": "7bdee41575919773818e525ea19e54eb817770af", "lessThan": "d5cf5b37064b1699d946e8b7ab4ac7d7d101814c", "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/tee/tee_shm.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.53", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.3", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "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": "6.8", "versionEndExcluding": "6.12.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.17.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9338093db954918558677a468d32e77041c65167"}, {"url": "https://git.kernel.org/stable/c/6a7874ab814ce12003c46a92f7afc9b035c8e8e9"}, {"url": "https://git.kernel.org/stable/c/d5cf5b37064b1699d946e8b7ab4ac7d7d101814c"}], "title": "tee: fix register_shm_helper()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: fix register_shm_helper()\n\nIn register_shm_helper(), fix incorrect error handling for a call to\niov_iter_extract_pages(). A case is missing for when\niov_iter_extract_pages() only got some pages and return a number larger\nthan 0, but not the requested amount.\n\nThis fixes a possible NULL pointer dereference following a bad input from\nioctl(TEE_IOC_SHM_REGISTER) where parts of the buffer isn't mapped."}], "id": "CVE-2025-40031", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-10-28T12:15:36.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6a7874ab814ce12003c46a92f7afc9b035c8e8e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9338093db954918558677a468d32e77041c65167"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d5cf5b37064b1699d946e8b7ab4ac7d7d101814c"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: tee: fix register_shm_helper()", "id": "2406749", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406749"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40031", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-10-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40031\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40031\nhttps://lore.kernel.org/linux-cve-announce/2025102810-CVE-2025-40031-3ff1@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-10-29T10:58:38.884893+00:00", "updated": "2025-10-29T10:58:38.884918+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}