{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40277", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.184Z", "datePublished": "2025-12-06T21:51:00.437Z", "dateUpdated": "2026-05-11T21:46:14.324Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:46:14.324Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE\n\nThis data originates from userspace and is used in buffer offset\ncalculations which could potentially overflow causing an out-of-bounds\naccess."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c"], "versions": [{"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "e58559845021c3bad5e094219378b869157fad53", "status": "affected", "versionType": "git"}, {"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "54d458b244893e47bda52ec3943fdfbc8d7d068b", "status": "affected", "versionType": "git"}, {"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173", "status": "affected", "versionType": "git"}, {"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "a3abb54c27b2c393c44362399777ad2f6e1ff17e", "status": "affected", "versionType": "git"}, {"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "b5df9e06eed3df6a4f5c6f8453013b0cabb927b4", "status": "affected", "versionType": "git"}, {"version": "8ce75f8ab9044fe11caaaf2b2c82471023212f9f", "lessThan": "5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc", "status": "affected", 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{"version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.117", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.59", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.9", "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": "4.3", "versionEndExcluding": "5.4.302"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "5.10.247"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", 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{"url": "https://git.kernel.org/stable/c/709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173"}, {"url": "https://git.kernel.org/stable/c/a3abb54c27b2c393c44362399777ad2f6e1ff17e"}, {"url": "https://git.kernel.org/stable/c/b5df9e06eed3df6a4f5c6f8453013b0cabb927b4"}, {"url": "https://git.kernel.org/stable/c/5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc"}, {"url": "https://git.kernel.org/stable/c/f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0"}, {"url": "https://git.kernel.org/stable/c/32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af"}], "title": "drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE\n\nThis data originates from userspace and is used in buffer offset\ncalculations which could potentially overflow causing an out-of-bounds\naccess."}], "id": "CVE-2025-40277", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-12-06T22:15:55.560", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/54d458b244893e47bda52ec3943fdfbc8d7d068b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a3abb54c27b2c393c44362399777ad2f6e1ff17e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b5df9e06eed3df6a4f5c6f8453013b0cabb927b4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e58559845021c3bad5e094219378b869157fad53"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE", "id": "2419954", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419954"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE\nThis data originates from userspace and is used in buffer offset\ncalculations which could potentially overflow causing an out-of-bounds\naccess."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module vmwgfx from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2025-40277", "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": "Out of support scope", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40277\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40277\nhttps://lore.kernel.org/linux-cve-announce/2025120717-CVE-2025-40277-d511@gregkh/T"], "statement": "A local attacker with access to the vmwgfx device could trigger an integer overflow when sending crafted SVGA3D command buffers with a malformed header size. The unchecked header->size field is used in buffer offset arithmetic, leading to potential out-of-bounds memory access in the kernel. The patch enforces a maximum bound (SVGA_CMD_MAX_DATASIZE) to prevent overflows. This issue may allow denial of service or privilege escalation within the guest VM.", "threat_severity": "Moderate"}

{}