{"api_version":"1","generated_at":"2026-08-24T13:55:55+00:00","cve":"CVE-2026-68184","urls":{"html":"https://cve.report/CVE-2026-68184","api":"https://cve.report/api/cve/CVE-2026-68184.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68184","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68184"},"summary":{"title":"cdrom: fix stack out-of-bounds read in CDROMVOLCTRL","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncdrom: fix stack out-of-bounds read in CDROMVOLCTRL\n\nmmc_ioctl_cdrom_volume() first reads the audio control mode page into a\n32-byte stack buffer with cgc->buflen set to 24.  If the device reports a\nblock descriptor, the function increases cgc->buflen to include that\ndescriptor and reads the page again.\n\nFor CDROMVOLCTRL, the function then builds a MODE SELECT parameter list\nby moving cgc->buffer forward by offset - 8 bytes.  This drops the block\ndescriptor from the outgoing payload and leaves a new 8-byte mode\nparameter header in front of the audio control page.  However, cgc->buflen\nis left unchanged.\n\nWith a standard 8-byte block descriptor, cgc->buffer points at buffer + 8\nbut cgc->buflen remains 32.  cdrom_mode_select() therefore asks the low\nlevel packet path to write 32 bytes from that adjusted pointer, reading 8\nbytes past the end of the 32-byte stack buffer.\n\nThis is not hit by CDROMVOLREAD, and CDROMVOLCTRL only triggers it on\ndrives that return a non-zero block descriptor length, which helps explain\nwhy it has gone unnoticed.  The overread is also sent to the device as\nextra MODE SELECT payload, so it may not produce an obvious local failure.\n\nReduce cgc->buflen by the same amount as the buffer pointer adjustment so\nthe MODE SELECT transfer covers only the intended parameter list.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:05","updated_at":"2026-08-19 17:20:34"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7344c84e32413e5c8832f74b8a612b0194e5c051","name":"https://git.kernel.org/stable/c/7344c84e32413e5c8832f74b8a612b0194e5c051","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/35b68e24c5a69fa4545f46f05f6c849223034cb6","name":"https://git.kernel.org/stable/c/35b68e24c5a69fa4545f46f05f6c849223034cb6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/45c65df5339deea3cf204902aac383fe995941a7","name":"https://git.kernel.org/stable/c/45c65df5339deea3cf204902aac383fe995941a7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0329b661349f42f9616f2733da67edffbbb8455d","name":"https://git.kernel.org/stable/c/0329b661349f42f9616f2733da67edffbbb8455d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e150c9a10baee55d3bfbc96dbe66b205e8b4fd44","name":"https://git.kernel.org/stable/c/e150c9a10baee55d3bfbc96dbe66b205e8b4fd44","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b27e195d4db8dea263050bdbeb11881b2999c9c6","name":"https://git.kernel.org/stable/c/b27e195d4db8dea263050bdbeb11881b2999c9c6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d43c5c0c935522deae7339e0c2399365f3bf0016","name":"https://git.kernel.org/stable/c/d43c5c0c935522deae7339e0c2399365f3bf0016","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f3e2715a150066f09aa82c30fa983fb184ad6dd5","name":"https://git.kernel.org/stable/c/f3e2715a150066f09aa82c30fa983fb184ad6dd5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68184","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68184","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 45c65df5339deea3cf204902aac383fe995941a7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 0329b661349f42f9616f2733da67edffbbb8455d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 e150c9a10baee55d3bfbc96dbe66b205e8b4fd44 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 7344c84e32413e5c8832f74b8a612b0194e5c051 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.216 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.183 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"68184","cve":"CVE-2026-68184","epss":"0.002000000","percentile":"0.101820000","score_date":"2026-08-19","updated_at":"2026-08-20 00:13:09"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/cdrom/cdrom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"45c65df5339deea3cf204902aac383fe995941a7","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"0329b661349f42f9616f2733da67edffbbb8455d","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"e150c9a10baee55d3bfbc96dbe66b205e8b4fd44","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"7344c84e32413e5c8832f74b8a612b0194e5c051","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"35b68e24c5a69fa4545f46f05f6c849223034cb6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"d43c5c0c935522deae7339e0c2399365f3bf0016","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f3e2715a150066f09aa82c30fa983fb184ad6dd5","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"b27e195d4db8dea263050bdbeb11881b2999c9c6","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/cdrom/cdrom.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.265","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.265","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.216","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.183","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncdrom: fix stack out-of-bounds read in CDROMVOLCTRL\n\nmmc_ioctl_cdrom_volume() first reads the audio control mode page into a\n32-byte stack buffer with cgc->buflen set to 24.  If the device reports a\nblock descriptor, the function increases cgc->buflen to include that\ndescriptor and reads the page again.\n\nFor CDROMVOLCTRL, the function then builds a MODE SELECT parameter list\nby moving cgc->buffer forward by offset - 8 bytes.  This drops the block\ndescriptor from the outgoing payload and leaves a new 8-byte mode\nparameter header in front of the audio control page.  However, cgc->buflen\nis left unchanged.\n\nWith a standard 8-byte block descriptor, cgc->buffer points at buffer + 8\nbut cgc->buflen remains 32.  cdrom_mode_select() therefore asks the low\nlevel packet path to write 32 bytes from that adjusted pointer, reading 8\nbytes past the end of the 32-byte stack buffer.\n\nThis is not hit by CDROMVOLREAD, and CDROMVOLCTRL only triggers it on\ndrives that return a non-zero block descriptor length, which helps explain\nwhy it has gone unnoticed.  The overread is also sent to the device as\nextra MODE SELECT payload, so it may not produce an obvious local failure.\n\nReduce cgc->buflen by the same amount as the buffer pointer adjustment so\nthe MODE SELECT transfer covers only the intended parameter list."}],"providerMetadata":{"dateUpdated":"2026-08-19T16:30:51.908Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/45c65df5339deea3cf204902aac383fe995941a7"},{"url":"https://git.kernel.org/stable/c/0329b661349f42f9616f2733da67edffbbb8455d"},{"url":"https://git.kernel.org/stable/c/e150c9a10baee55d3bfbc96dbe66b205e8b4fd44"},{"url":"https://git.kernel.org/stable/c/7344c84e32413e5c8832f74b8a612b0194e5c051"},{"url":"https://git.kernel.org/stable/c/35b68e24c5a69fa4545f46f05f6c849223034cb6"},{"url":"https://git.kernel.org/stable/c/d43c5c0c935522deae7339e0c2399365f3bf0016"},{"url":"https://git.kernel.org/stable/c/f3e2715a150066f09aa82c30fa983fb184ad6dd5"},{"url":"https://git.kernel.org/stable/c/b27e195d4db8dea263050bdbeb11881b2999c9c6"}],"title":"cdrom: fix stack out-of-bounds read in CDROMVOLCTRL","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68184","datePublished":"2026-08-10T11:59:56.319Z","dateReserved":"2026-07-30T09:28:09.373Z","dateUpdated":"2026-08-19T16:30:51.908Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:05","lastModifiedDate":"2026-08-19 17:20:34","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68184","Ordinal":"1","Title":"cdrom: fix stack out-of-bounds read in CDROMVOLCTRL","CVE":"CVE-2026-68184","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68184","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncdrom: fix stack out-of-bounds read in CDROMVOLCTRL\n\nmmc_ioctl_cdrom_volume() first reads the audio control mode page into a\n32-byte stack buffer with cgc->buflen set to 24.  If the device reports a\nblock descriptor, the function increases cgc->buflen to include that\ndescriptor and reads the page again.\n\nFor CDROMVOLCTRL, the function then builds a MODE SELECT parameter list\nby moving cgc->buffer forward by offset - 8 bytes.  This drops the block\ndescriptor from the outgoing payload and leaves a new 8-byte mode\nparameter header in front of the audio control page.  However, cgc->buflen\nis left unchanged.\n\nWith a standard 8-byte block descriptor, cgc->buffer points at buffer + 8\nbut cgc->buflen remains 32.  cdrom_mode_select() therefore asks the low\nlevel packet path to write 32 bytes from that adjusted pointer, reading 8\nbytes past the end of the 32-byte stack buffer.\n\nThis is not hit by CDROMVOLREAD, and CDROMVOLCTRL only triggers it on\ndrives that return a non-zero block descriptor length, which helps explain\nwhy it has gone unnoticed.  The overread is also sent to the device as\nextra MODE SELECT payload, so it may not produce an obvious local failure.\n\nReduce cgc->buflen by the same amount as the buffer pointer adjustment so\nthe MODE SELECT transfer covers only the intended parameter list.","Type":"Description","Title":"cdrom: fix stack out-of-bounds read in CDROMVOLCTRL"}]}}}