{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-64133", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.036Z", "datePublished": "2026-07-19T15:40:28.277Z", "dateUpdated": "2026-08-05T12:39:35.138Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:39:35.138Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: asihpi: Fix potential OOB array access at reading cache\n\nfind_control() to retrieve a cached info accesses the array with the\ngiven index blindly, which may lead to an OOB array access.\nAdd a sanity check for avoiding it." } ], "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 bug is reached only via local ALSA hwdep ioctl (`HPI_IOCTL_LINUX` on `/dev/snd/hwC*D0`) or equivalent in-kernel `hpi_send_recv()` calls; there is no network, Bluetooth, or physical-device attack surface for this PCI audio driver path.\nAC:L - On systems with an AudioScience adapter and control cache enabled, an attacker fully controls `obj_index` in the HPI control message and can reliably trigger the out-of-bounds access with a single crafted ioctl without races or victim-dependent timing.\nPR:L - Exploitation requires only local access to the ALSA sound/hwdep device nodes (typically any unprivileged user in the `audio` group), not real root or capabilities that cannot be obtained through user namespaces.\nUI:N - No victim interaction is required; the attacker opens the hwdep device and issues crafted HPI control messages directly without needing another user to perform any action.\nS:U - Impact is confined to kernel memory within the same security authority (local privilege escalation / kernel crash); it does not cross VM, IOMMU, or sandbox boundaries.\nC:H - The out-of-bounds read of `p_cache->p_info[control_index]` returns adjacent kernel heap pointers/data, and `hpi_check_control_cache_single()` dereferences the corrupted pointer and copies interpreted fields into the ioctl response buffer, enabling kernel information disclosure.\nI:H - After the out-of-bounds pointer load, follow-on cache handling dereferences attacker-influenced kernel addresses for reads and, on SET_STATE or PAD control paths, performs writes (e.g., null-termination), providing exploitable kernel memory corruption beyond a simple crash.\nA:H - A large out-of-bounds `obj_index` can read unmapped memory and cause a kernel oops/panic, and invalid pointer dereferences in the cache-handling path can crash or hang the system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "sound/pci/asihpi/hpicmn.c" ], "versions": [ { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "e060e21fe9cca1e5eafd8a1c597026577771e8d9", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "34d0d492a2812b9289af14bca3573a89275965b2", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "ffa29cea7bf9a4ef2ea8084967f142e0301ac670", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "7b6f8c8eb93f02a74b1de8e521c0952af10d1f43", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "8778386e4387b28f2bf8425d7ffc667c6294457f", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "61c5017c64e2ac9e10b70b14b17a079dbc0a805f", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "7d107239935793995bdc6cf29bb99e180bde4c28", "status": "affected", "versionType": "git" }, { "version": "719f82d3987aad4cc9f46d19c35f362672545cad", "lessThan": "7b7d6572145c1dab2dd9bfb550b188e5f0ff3c3f", "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/pci/asihpi/hpicmn.c" ], "versions": [ { "version": "2.6.35", "status": "affected" }, { "version": "0", "lessThan": "2.6.35", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.258", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.209", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.175", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.142", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.92", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.34", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.0.11", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1", "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": "2.6.35", "versionEndExcluding": "5.10.258" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "5.15.209" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.1.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.6.142" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.12.92" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "6.18.34" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.0.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.35", "versionEndExcluding": "7.1" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/e060e21fe9cca1e5eafd8a1c597026577771e8d9" }, { "url": "https://git.kernel.org/stable/c/34d0d492a2812b9289af14bca3573a89275965b2" }, { "url": "https://git.kernel.org/stable/c/ffa29cea7bf9a4ef2ea8084967f142e0301ac670" }, { "url": "https://git.kernel.org/stable/c/7b6f8c8eb93f02a74b1de8e521c0952af10d1f43" }, { "url": "https://git.kernel.org/stable/c/8778386e4387b28f2bf8425d7ffc667c6294457f" }, { "url": "https://git.kernel.org/stable/c/61c5017c64e2ac9e10b70b14b17a079dbc0a805f" }, { "url": "https://git.kernel.org/stable/c/7d107239935793995bdc6cf29bb99e180bde4c28" }, { "url": "https://git.kernel.org/stable/c/7b7d6572145c1dab2dd9bfb550b188e5f0ff3c3f" } ], "title": "ALSA: asihpi: Fix potential OOB array access at reading cache", "x_generator": { "engine": "bippy-1.2.0" } } } }