{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68819", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T10:30:51.048Z", "datePublished": "2026-01-13T15:29:22.695Z", "dateUpdated": "2026-08-05T12:11:46.937Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:11:46.937Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()\n\nrlen value is a user-controlled value, but dtv5100_i2c_msg() does not\ncheck the size of the rlen value. Therefore, if it is set to a value\nlarger than sizeof(st->data), an out-of-bounds vuln occurs for st->data.\n\nTherefore, we need to add proper range checking to prevent this vuln." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable path is reached through an I2C_RDWR ioctl on the local /dev/i2c-N device; network, RF, and USB responses do not control rlen.\nAC:L - An attacker can reliably submit a two-message transaction with a second-message length up to 8192 bytes, requiring no race or condition outside their control.\nPR:L - The ioctl path has no capability or authentication check, so an unprivileged local account with ordinary device-node DAC access can trigger it.\nUI:N - Once the affected DVB adapter and i2c-dev interface are present, the attacker can trigger the overflow without another user's action.\nS:U - Exploitation compromises the host kernel from a local process without crossing a separate virtualization or IOMMU security authority.\nC:H - The attacker-controlled overflow can corrupt adjacent kernel objects and plausibly enable control-flow hijacking or primitives exposing arbitrary kernel memory.\nI:H - Up to 8192 attacker-controlled bytes are copied into an 80-byte heap object, providing a large heap-corruption primitive suitable for arbitrary modification or code execution.\nA:H - The overflow can corrupt critical kernel state and cause an oops or panic, while hardened bounds checking may itself terminate the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/media/usb/dvb-usb/dtv5100.c" ], "versions": [ { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "c2c293ea7b61f12cdaad1e99a5b4efc58c88960a", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "c2305b4c5fc15e20ac06c35738e0578eb4323750", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "61f214a878e96e2a8750bf96a98f78c658dba60c", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "4a54d8fcb093761e4c56eb211cf4e39bf8401fa1", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "fe3e129ab49806aaaa3f22067ebc75c2dfbe4658", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "ac92151ff2494130d9fc686055d6bbb9743a673e", "status": "affected", "versionType": "git" }, { "version": "60688d5e6e6e2ae62f29762d1e3b2aec2dbd3817", "lessThan": "b91e6aafe8d356086cc621bc03e35ba2299e4788", "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/media/usb/dvb-usb/dtv5100.c" ], "versions": [ { "version": "2.6.28", "status": "affected" }, { "version": "0", "lessThan": "2.6.28", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.248", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.198", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.160", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.64", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.3", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.19", "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": "2.6.28", "versionEndExcluding": "5.10.248" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "5.15.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.1.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.12.64" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.28", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c2c293ea7b61f12cdaad1e99a5b4efc58c88960a" }, { "url": "https://git.kernel.org/stable/c/c2305b4c5fc15e20ac06c35738e0578eb4323750" }, { "url": "https://git.kernel.org/stable/c/61f214a878e96e2a8750bf96a98f78c658dba60c" }, { "url": "https://git.kernel.org/stable/c/4a54d8fcb093761e4c56eb211cf4e39bf8401fa1" }, { "url": "https://git.kernel.org/stable/c/fe3e129ab49806aaaa3f22067ebc75c2dfbe4658" }, { "url": "https://git.kernel.org/stable/c/ac92151ff2494130d9fc686055d6bbb9743a673e" }, { "url": "https://git.kernel.org/stable/c/b91e6aafe8d356086cc621bc03e35ba2299e4788" } ], "title": "media: dvb-usb: dtv5100: fix out-of-bounds in dtv5100_i2c_msg()", "x_generator": { "engine": "bippy-1.2.0" } } } }