{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-21911", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.787Z", "datePublished": "2025-04-01T15:40:49.698Z", "dateUpdated": "2026-05-11T21:08:54.809Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:08:54.809Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: avoid deadlock on fence release\n\nDo scheduler queue fence release processing on a workqueue, rather\nthan in the release function itself.\n\nFixes deadlock issues such as the following:\n\n[ 607.400437] ============================================\n[ 607.405755] WARNING: possible recursive locking detected\n[ 607.415500] --------------------------------------------\n[ 607.420817] weston:zfq0/24149 is trying to acquire lock:\n[ 607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: pvr_gem_object_vunmap+0x40/0xc0 [powervr]\n[ 607.436728]\n but task is already holding lock:\n[ 607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: dma_buf_ioctl+0x250/0x554\n[ 607.451727]\n other info that might help us debug this:\n[ 607.458245] Possible unsafe locking scenario:\n\n[ 607.464155] CPU0\n[ 607.466601] ----\n[ 607.469044] lock(reservation_ww_class_mutex);\n[ 607.473584] lock(reservation_ww_class_mutex);\n[ 607.478114]\n *** DEADLOCK ***"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/imagination/pvr_queue.c", "drivers/gpu/drm/imagination/pvr_queue.h"], "versions": [{"version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "d993ae7360923efd6ade43a32043459a121c28c1", "status": "affected", "versionType": "git"}, {"version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "9bd8b8d34cf4efba18766d64f817c819ed1bbde7", "status": "affected", "versionType": "git"}, {"version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/imagination/pvr_queue.c", "drivers/gpu/drm/imagination/pvr_queue.h"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.19", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13.7", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14", "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": "6.8", "versionEndExcluding": "6.12.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.13.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.14"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d993ae7360923efd6ade43a32043459a121c28c1"}, {"url": "https://git.kernel.org/stable/c/9bd8b8d34cf4efba18766d64f817c819ed1bbde7"}, {"url": "https://git.kernel.org/stable/c/df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13"}], "title": "drm/imagination: avoid deadlock on fence release", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-21911", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:24:14.752243Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:26:34.387Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2025-21911", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:24:14.752243Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-667", "description": "CWE-667 Improper Locking"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T14:37:33.928Z"}}], "cna": {"title": "drm/imagination: avoid deadlock on fence release", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "d993ae7360923efd6ade43a32043459a121c28c1", "versionType": "git"}, {"status": "affected", "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "9bd8b8d34cf4efba18766d64f817c819ed1bbde7", "versionType": "git"}, {"status": "affected", "version": "eaf01ee5ba28b97f96a3d3eec4c5fbfb37ee4cde", "lessThan": "df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/imagination/pvr_queue.c", "drivers/gpu/drm/imagination/pvr_queue.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"status": "unaffected", "version": "0", "lessThan": "6.8", "versionType": "semver"}, {"status": "unaffected", "version": "6.12.19", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.13.7", "versionType": "semver", "lessThanOrEqual": "6.13.*"}, {"status": "unaffected", "version": "6.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/imagination/pvr_queue.c", "drivers/gpu/drm/imagination/pvr_queue.h"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/d993ae7360923efd6ade43a32043459a121c28c1"}, {"url": "https://git.kernel.org/stable/c/9bd8b8d34cf4efba18766d64f817c819ed1bbde7"}, {"url": "https://git.kernel.org/stable/c/df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: avoid deadlock on fence release\n\nDo scheduler queue fence release processing on a workqueue, rather\nthan in the release function itself.\n\nFixes deadlock issues such as the following:\n\n[ 607.400437] ============================================\n[ 607.405755] WARNING: possible recursive locking detected\n[ 607.415500] --------------------------------------------\n[ 607.420817] weston:zfq0/24149 is trying to acquire lock:\n[ 607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: pvr_gem_object_vunmap+0x40/0xc0 [powervr]\n[ 607.436728]\n but task is already holding lock:\n[ 607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: dma_buf_ioctl+0x250/0x554\n[ 607.451727]\n other info that might help us debug this:\n[ 607.458245] Possible unsafe locking scenario:\n\n[ 607.464155] CPU0\n[ 607.466601] ----\n[ 607.469044] lock(reservation_ww_class_mutex);\n[ 607.473584] lock(reservation_ww_class_mutex);\n[ 607.478114]\n *** DEADLOCK ***"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.19", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.13.7", "versionStartIncluding": "6.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.14", "versionStartIncluding": "6.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:08:54.809Z"}}}, "cveMetadata": {"cveId": "CVE-2025-21911", "state": "PUBLISHED", "dateUpdated": "2026-05-11T21:08:54.809Z", "dateReserved": "2024-12-29T08:45:45.787Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-04-01T15:40:49.698Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4A54F97-E095-42DC-931A-DA4EAF83CCF6", "versionEndExcluding": "6.12.19", "versionStartIncluding": "6.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "842F5A44-3E71-4546-B4FD-43B0ACE3F32B", "versionEndExcluding": "6.13.7", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*", "matchCriteriaId": "186716B6-2B66-4BD0-852E-D48E71C0C85F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D3E781C-403A-498F-9DA9-ECEE50F41E75", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*", "matchCriteriaId": "66619FB8-0AAF-4166-B2CF-67B24143261D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*", "matchCriteriaId": "D3D6550E-6679-4560-902D-AF52DCFE905B", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.14:rc5:*:*:*:*:*:*", "matchCriteriaId": "45B90F6B-BEC7-4D4E-883A-9DBADE021750", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: avoid deadlock on fence release\n\nDo scheduler queue fence release processing on a workqueue, rather\nthan in the release function itself.\n\nFixes deadlock issues such as the following:\n\n[ 607.400437] ============================================\n[ 607.405755] WARNING: possible recursive locking detected\n[ 607.415500] --------------------------------------------\n[ 607.420817] weston:zfq0/24149 is trying to acquire lock:\n[ 607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: pvr_gem_object_vunmap+0x40/0xc0 [powervr]\n[ 607.436728]\n but task is already holding lock:\n[ 607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: dma_buf_ioctl+0x250/0x554\n[ 607.451727]\n other info that might help us debug this:\n[ 607.458245] Possible unsafe locking scenario:\n\n[ 607.464155] CPU0\n[ 607.466601] ----\n[ 607.469044] lock(reservation_ww_class_mutex);\n[ 607.473584] lock(reservation_ww_class_mutex);\n[ 607.478114]\n *** DEADLOCK ***"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/imagination: evitar el bloqueo en la liberaci\u00f3n de cercas El programador pone en cola el procesamiento de liberaci\u00f3n de cercas en una cola de trabajo, en lugar de en la funci\u00f3n de liberaci\u00f3n en s\u00ed. Corrige problemas de bloqueo como los siguientes: [ 607.400437] =============================================== [ 607.405755] ADVERTENCIA: posible bloqueo recursivo detectado [ 607.415500] -------------------------------------------- [ 607.420817] weston:zfq0/24149 est\u00e1 intentando adquirir el bloqueo: [ 607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, en: pvr_gem_object_vunmap+0x40/0xc0 [powervr] [ 607.436728] pero la tarea ya mantiene el bloqueo: [ 607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, en: dma_buf_ioctl+0x250/0x554 [ 607.451727] otra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto: [ 607.458245] Posible escenario de bloqueo inseguro: [ 607.464155] CPU0 [ 607.466601] ---- [ 607.469044] lock(reservation_ww_class_mutex); [ 607.473584] lock(reservation_ww_class_mutex); [ 607.478114] *** BLOQUEO INTERMEDIO ***"}], "id": "CVE-2025-21911", "lastModified": "2025-10-01T20:18:32.940", "metrics": {"cvssMetricV31": [{"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"}, {"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": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-04-01T16:15:21.677", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9bd8b8d34cf4efba18766d64f817c819ed1bbde7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d993ae7360923efd6ade43a32043459a121c28c1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/df1a1ed5e1bdd9cc13148e0e5549f5ebcf76cf13"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-667"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: drm/imagination: avoid deadlock on fence release", "id": "2356670", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2356670"}, "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"}, "cwe": "CWE-667", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/imagination: avoid deadlock on fence release\nDo scheduler queue fence release processing on a workqueue, rather\nthan in the release function itself.\nFixes deadlock issues such as the following:\n[ 607.400437] ============================================\n[ 607.405755] WARNING: possible recursive locking detected\n[ 607.415500] --------------------------------------------\n[ 607.420817] weston:zfq0/24149 is trying to acquire lock:\n[ 607.426131] ffff000017d041a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: pvr_gem_object_vunmap+0x40/0xc0 [powervr]\n[ 607.436728]\nbut task is already holding lock:\n[ 607.442554] ffff000017d105a0 (reservation_ww_class_mutex){+.+.}-{3:3}, at: dma_buf_ioctl+0x250/0x554\n[ 607.451727]\nother info that might help us debug this:\n[ 607.458245] Possible unsafe locking scenario:\n[ 607.464155] CPU0\n[ 607.466601] ----\n[ 607.469044] lock(reservation_ww_class_mutex);\n[ 607.473584] lock(reservation_ww_class_mutex);\n[ 607.478114]\n*** DEADLOCK ***"], "name": "CVE-2025-21911", "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": "2025-04-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-21911\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-21911\nhttps://lore.kernel.org/linux-cve-announce/2025040130-CVE-2025-21911-8a57@gregkh/T"], "threat_severity": "Moderate"}

{}