{"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"}}}}