CVE-2025-39696

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-39696", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.114Z", "datePublished": "2025-09-05T17:21:02.068Z", "dateUpdated": "2026-08-05T12:04:37.787Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:04:37.787Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: tas2781: Fix wrong reference of tasdevice_priv\n\nDuring the conversion to unify the calibration data management, the\nreference to tasdevice_priv was wrongly set to h->hda_priv instead of\nh->priv. This resulted in memory corruption and crashes eventually.\nUnfortunately it's a void pointer, hence the compiler couldn't know\nthat it's wrong."}], "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 corruption occurs in the tas2781 HDA I2C codec driver's firmware-ready callback during local driver bind; there is no network, adjacent-network, or peer-supplied data path into `tas2563_save_calibration()`. Exploiting the resulting kernel heap corruption requires local presence on the affected machine.\nAC:L - The wrong pointer is dereferenced unconditionally every time `tasdev_fw_ready()` runs on a TAS2563 (ACPI HID INT8866) system \u2014 no race, no timing window, and no memory-layout precondition the attacker cannot influence. The driver is enabled in stock distro kernels and the hardware is common in consumer Lenovo laptops, so this is not a rare-config case.\nPR:L - No capability, credential, or privilege check exists anywhere on the path \u2014 the corruption fires from a kernel firmware-load worker at boot, before any authentication. A plain unprivileged local account on the affected system is sufficient to be positioned to leverage the resulting heap damage, so Low rather than High.\nUI:N - The vulnerable code is reached automatically from the asynchronous `request_firmware_nowait()` completion callback during device probe/bind; no victim must log in, mount anything, open a device node, or take any other action.\nS:U - The type confusion corrupts kernel heap memory belonging to the same kernel that hosts the vulnerable driver, with no crossing of a VM, IOMMU, or sandbox boundary. Impact and vulnerable component share one security authority.\nC:H - The function performs OOB reads of `p->dev` and `p->ndev` hundreds/thousands of bytes past a 24-byte allocation and writes a live kernel heap pointer (`cd->data`) into an unrelated adjacent object, which can surface kernel addresses to userspace and defeat KASLR. Heap corruption of this kind is leverageable into broader memory disclosure.\nI:H - This is an out-of-bounds write: `cali_dat_sz_per_dev`, `total_sz`, `data`, and the five `cali_reg` fields are written ~790\u2013810 bytes beyond the object, and `devm_kzalloc()` performs a list insertion through an uncontrolled `struct device *`, giving a write through a wild pointer. OOB write plus type confusion is High integrity impact under the standard treatment.\nA:H - The maintainer explicitly states this \"resulted in memory corruption and crashes eventually\"; dereferencing the garbage `p->dev` inside `devm_kzalloc()` (spinlock acquisition and list_add at an arbitrary address) reliably produces an oops or panic, and the corrupted neighbouring heap objects cause later crashes. Any kernel crash is High."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/hda/codecs/side-codecs/tas2781_hda_i2c.c"], "versions": [{"version": "4fe238513407d83f38bf5782e8bcdd7b8baeb85d", "lessThan": "2812815aa79637d39d4398ecd7e58f65d1c79231", "status": "affected", "versionType": "git"}, {"version": "4fe238513407d83f38bf5782e8bcdd7b8baeb85d", "lessThan": "3f4422e7c9436abf81a00270be7e4d6d3760ec0e", "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/hda/codecs/side-codecs/tas2781_hda_i2c.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.16.4", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17", "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": "6.16", "versionEndExcluding": "6.16.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "6.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2812815aa79637d39d4398ecd7e58f65d1c79231"}, {"url": "https://git.kernel.org/stable/c/3f4422e7c9436abf81a00270be7e4d6d3760ec0e"}], "title": "ALSA: hda: tas2781: Fix wrong reference of tasdevice_priv", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["sound/hda/codecs/side-codecs/tas2781_hda_i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2812815aa79637d39d4398ecd7e58f65d1c79231", "status": "affected", "version": "4fe238513407d83f38bf5782e8bcdd7b8baeb85d", "versionType": "git"}, {"lessThan": "3f4422e7c9436abf81a00270be7e4d6d3760ec0e", "status": "affected", "version": "4fe238513407d83f38bf5782e8bcdd7b8baeb85d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["sound/hda/codecs/side-codecs/tas2781_hda_i2c.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.16.*", "status": "unaffected", "version": "6.16.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "26A22BE8-0D22-4155-AED4-BB823BB934AB", "versionEndExcluding": "6.16.4", "versionStartIncluding": "6.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "327D22EF-390B-454C-BD31-2ED23C998A1C", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*", "matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: tas2781: Fix wrong reference of tasdevice_priv\n\nDuring the conversion to unify the calibration data management, the\nreference to tasdevice_priv was wrongly set to h->hda_priv instead of\nh->priv. This resulted in memory corruption and crashes eventually.\nUnfortunately it's a void pointer, hence the compiler couldn't know\nthat it's wrong."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nALSA: hda: tas2781: Correcci\u00f3n de referencia incorrecta de tasdevice_priv\n\nDurante la conversi\u00f3n para unificar la gesti\u00f3n de datos de calibraci\u00f3n, la referencia a tasdevice_priv fue establecida incorrectamente a h->hda_priv en lugar de h->priv. Esto result\u00f3 en corrupci\u00f3n de memoria y bloqueos eventualmente. Desafortunadamente, es un puntero void, por lo tanto, el compilador no pudo saber que era incorrecto."}], "id": "CVE-2025-39696", "lastModified": "2026-10-19T21:10:00.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-09-05T18:15:46.503", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2812815aa79637d39d4398ecd7e58f65d1c79231"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3f4422e7c9436abf81a00270be7e4d6d3760ec0e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ALSA: hda: tas2781: Fix wrong reference of tasdevice_priv", "id": "2393522", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393522"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-39696", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-09-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-39696\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-39696\nhttps://lore.kernel.org/linux-cve-announce/2025090547-CVE-2025-39696-ab35@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-09-08T15:17:45.267639+00:00", "updated": "2025-09-08T15:17:45.267690+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}