{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64001", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.026Z", "datePublished": "2026-07-19T14:56:18.816Z", "dateUpdated": "2026-07-19T14:56:18.816Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-19T14:56:18.816Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: pcm: oss: Fix setup list UAF on proc write error\n\nsnd_pcm_oss_proc_write() links a newly allocated setup entry into the\nOSS setup list before duplicating the task name. If the task-name\nallocation fails, the error path frees the already linked entry and\nleaves setup_list pointing at freed memory.\n\nA later OSS device open can then walk the stale list entry in\nsnd_pcm_oss_look_for_setup() and dereference freed memory.\n\nAllocate the task name and initialize the setup entry before publishing\nthe entry on setup_list. Also fetch the initial proc read iterator only\nafter taking setup_mutex, so all setup_list traversal follows the same\nlist lifetime rules."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["sound/core/oss/pcm_oss.c"], "versions": [{"version": "060d77b9c04acd7aef60790398a53f731db8c8fe", "lessThan": "8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce", "status": "affected", "versionType": "git"}, {"version": "060d77b9c04acd7aef60790398a53f731db8c8fe", "lessThan": "e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c", "status": "affected", "versionType": "git"}, {"version": "060d77b9c04acd7aef60790398a53f731db8c8fe", "lessThan": "be387230dc22d870afd0e5d35912b07c2bc323bd", "status": "affected", "versionType": "git"}, {"version": "060d77b9c04acd7aef60790398a53f731db8c8fe", "lessThan": "4cc54bdd54b337e77115be5b55577d1c58608eae", "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/core/oss/pcm_oss.c"], "versions": [{"version": "2.6.17", "status": "affected"}, {"version": "0", "lessThan": "2.6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.93", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "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": "2.6.17", "versionEndExcluding": "6.12.93"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.17", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.17", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.17", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce"}, {"url": "https://git.kernel.org/stable/c/e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c"}, {"url": "https://git.kernel.org/stable/c/be387230dc22d870afd0e5d35912b07c2bc323bd"}, {"url": "https://git.kernel.org/stable/c/4cc54bdd54b337e77115be5b55577d1c58608eae"}], "title": "ALSA: pcm: oss: Fix setup list UAF on proc write error", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"bugzilla": {"description": "kernel: ALSA: pcm: oss: Fix setup list UAF on proc write error", "id": "2502402", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502402"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: pcm: oss: Fix setup list UAF on proc write error\nsnd_pcm_oss_proc_write() links a newly allocated setup entry into the\nOSS setup list before duplicating the task name. If the task-name\nallocation fails, the error path frees the already linked entry and\nleaves setup_list pointing at freed memory.\nA later OSS device open can then walk the stale list entry in\nsnd_pcm_oss_look_for_setup() and dereference freed memory.\nAllocate the task name and initialize the setup entry before publishing\nthe entry on setup_list. Also fetch the initial proc read iterator only\nafter taking setup_mutex, so all setup_list traversal follows the same\nlist lifetime rules.", "A flaw was found in the Linux kernel's ALSA (Advanced Linux Sound Architecture) PCM (Pulse Code Modulation) OSS (Open Sound System) component. A local user could exploit a Use-After-Free (UAF) vulnerability in the `snd_pcm_oss_proc_write()` function. This occurs when a setup entry is prematurely linked into the OSS setup list, and a subsequent task-name allocation failure leads to the entry being freed while still referenced. A later attempt to open an OSS device could then access this freed memory, potentially leading to memory corruption or system instability."], "name": "CVE-2026-64001", "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64001\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64001\nhttps://lore.kernel.org/linux-cve-announce/2026071906-CVE-2026-64001-48e3@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[060d77b9c04acd7aef60790398a53f731db8c8fe,8be4efd0dc0093eb7a02ad1aac936bca2a1f04ce)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[060d77b9c04acd7aef60790398a53f731db8c8fe,e13922bb97b4e6f94f8ac02d034f2d4bd65eeb3c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[060d77b9c04acd7aef60790398a53f731db8c8fe,be387230dc22d870afd0e5d35912b07c2bc323bd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[060d77b9c04acd7aef60790398a53f731db8c8fe,4cc54bdd54b337e77115be5b55577d1c58608eae)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.93,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-21T16:30:02.945780+00:00", "updated": "2026-07-24T05:15:05.140353+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}