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runtime->dma_area. But this may\nlead to a UAF because the accessed runtime->dma_area might be freed\nconcurrently, as it's performed outside the PCM ops.\n\nFor avoiding it, move the code into the PCM core and perform it inside\nthe buffer access lock, so that it won't be changed during the\noperation."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: pcm: Correcci\u00f3n de la ejecuci\u00f3n de acceso al b\u00fafer en la capa PCM OSS. La capa PCM OSS intenta borrar el b\u00fafer con los datos de silencio durante la inicializaci\u00f3n (o reconfiguraci\u00f3n) de un flujo mediante la llamada expl\u00edcita a snd_pcm_format_set_silence() con runtime->dma_area. Sin embargo, esto puede generar una UAF, ya que el acceso a runtime->dma_area podr\u00eda liberarse simult\u00e1neamente, ya que se realiza fuera de las operaciones PCM. Para evitarlo, mueva el c\u00f3digo al n\u00facleo PCM y ejec\u00fatelo dentro del bloqueo de acceso al b\u00fafer, de modo que no se modifique durante la operaci\u00f3n. "}], "id": "CVE-2025-38078", "lastModified": "2026-06-17T09:16:00.573", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-06-18T10:15:41.380", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/10217da9644ae75cea7330f902c35fc5ba78bbbf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/74d90875f3d43f3eff0e9861c4701418795d3455"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8170d8ec4efd0be352c14cb61f374e30fb0c2a25"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/93a81ca0657758b607c3f4ba889ae806be9beb73"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/afa56c960fcb4db37f2e3399f28e9402e4e1f470"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bf85e49aaf3a3c5775ea87369ea5f159c2148db4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c0e05a76fc727929524ef24a19c302e6dd40233f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f3e14d706ec18faf19f5a6e75060e140fea05d4a"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ALSA: pcm: Fix race of buffer access at PCM OSS layer", "id": "2373353", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2373353"}, "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"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\nALSA: pcm: Fix race of buffer access at PCM OSS layer\nThe PCM OSS layer tries to clear the buffer with the silence data at\ninitialization (or reconfiguration) of a stream with the explicit call\nof snd_pcm_format_set_silence() with runtime->dma_area. But this may\nlead to a UAF because the accessed runtime->dma_area might be freed\nconcurrently, as it's performed outside the PCM ops.\nFor avoiding it, move the code into the PCM core and perform it inside\nthe buffer access lock, so that it won't be changed during the\noperation."], "name": "CVE-2025-38078", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Under investigation", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-06-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-38078\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-38078\nhttps://lore.kernel.org/linux-cve-announce/2025061841-CVE-2025-38078-3f10@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-06-23T09:16:29.612147+00:00", "updated": "2025-06-23T09:16:29.612205+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}