{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68347", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T14:48:05.299Z", "datePublished": "2025-12-24T10:32:39.804Z", "dateUpdated": "2026-08-05T12:10:58.597Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:58.597Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events\n\nThe DSP event handling code in hwdep_read() could write more bytes to\nthe user buffer than requested, when a user provides a buffer smaller\nthan the event header size (8 bytes).\n\nFix by using min_t() to clamp the copy size, This ensures we never copy\nmore than the user requested." } ], "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 - Exploitation reaches the vulnerable callback through read() on the local ALSA hwdep device; the connected MOTU interface is a deployment prerequisite rather than the attack channel.\nAC:L - A device-authorized attacker can start streaming, induce or await a DSP parameter event, and deterministically request fewer than eight bytes. No race or condition outside the attacker’s influence is required.\nPR:L - The path has no capability or namespace check, but requires ordinary access to the ALSA device node, commonly granted to an active unprivileged user or audio-group member.\nUI:N - No human victim action is required once a DSP event is queued; the attacker or an automatically operating consumer can trigger the faulty read.\nS:U - The corruption occurs within the host’s kernel/userspace security authority and does not cross a VM, IOMMU, or comparable isolation boundary.\nC:H - The direct header contains no secret, but the out-of-bounds write can corrupt adjacent allocator or control data in a privileged consumer. Under the required higher-severity assumption, resulting control-flow compromise could expose all data accessible to that process.\nI:H - The kernel writes an eight-byte header despite a request for as few as zero bytes, allowing up to seven bytes of adjacent userspace memory corruption. Such an out-of-bounds write can corrupt pointers or allocator metadata and potentially enable control-flow hijacking.\nA:H - The overwrite can crash the consuming process, and the still-queued or repeatedly induced DSP event permits recurring denial of a critical audio or control service." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/firewire/motu/motu-hwdep.c" ], "versions": [ { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "16620f0617400746984362c3d6ac547eeae1d35f", "status": "affected", "versionType": "git" }, { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "ddd32ec66bc4eb6969fe835e4cc1c0706c6348fe", "status": "affected", "versionType": "git" }, { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "6275fd726d53a8ec724f20201cf3bd862711e17b", "status": "affected", "versionType": "git" }, { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "161291bac551821bba98eb4ea84c82338578d1b0", "status": "affected", "versionType": "git" }, { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "cdda0d06f8650e33255f79839f188bbece44117c", "status": "affected", "versionType": "git" }, { "version": "634ec0b2906efd46f6f57977e172aa3470aca432", "lessThan": "210d77cca3d0494ed30a5c628b20c1d95fa04fb1", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/firewire/motu/motu-hwdep.c" ], "versions": [ { "version": "5.16", "status": "affected" }, { "version": "0", "lessThan": "5.16", "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": "6.12.63", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.13", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.2", "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": "5.16", "versionEndExcluding": "6.1.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.12.63" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.17.13" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.18.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/16620f0617400746984362c3d6ac547eeae1d35f" }, { "url": "https://git.kernel.org/stable/c/ddd32ec66bc4eb6969fe835e4cc1c0706c6348fe" }, { "url": "https://git.kernel.org/stable/c/6275fd726d53a8ec724f20201cf3bd862711e17b" }, { "url": "https://git.kernel.org/stable/c/161291bac551821bba98eb4ea84c82338578d1b0" }, { "url": "https://git.kernel.org/stable/c/cdda0d06f8650e33255f79839f188bbece44117c" }, { "url": "https://git.kernel.org/stable/c/210d77cca3d0494ed30a5c628b20c1d95fa04fb1" } ], "title": "ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events", "x_generator": { "engine": "bippy-1.2.0" } } } }