{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fd4a4d0711f48a99b25bcd45e00eef8339eff82d", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "6404898af86d986db1dbbe06177c143e40652e49", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "796e77c14c4c1e2cd36473760fb6cc66c695eb47", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "ac2d898da5095d46bd1ff8585fdd753d58ad91e7", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "a205740a7231e967ac77cb731171642901c327af", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "7b4d0fab3ff2c00c6d34e1952c9df5129a826aee", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "549c6db503dbb85dbff4840830971853feac6625", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}, {"lessThan": "bc847787233277a337788568e90a6ee1557595eb", "status": "affected", "version": "2389fc1305fc1e2cf8b310a75463fefd3058bf48", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.1"}, {"lessThan": "4.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.252", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.202", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.165", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.128", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.75", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.16", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "AFCC1430-2194-4A37-8732-891682CC5E8B", "versionEndExcluding": "5.10.252", "versionStartIncluding": "4.1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "4002FC2B-1456-4666-B240-0EBF590C4671", "versionEndExcluding": "5.15.202", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654", "versionEndExcluding": "6.1.165", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2", "versionEndExcluding": "6.6.128", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2", "versionEndExcluding": "6.12.75", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B", "versionEndExcluding": "6.18.16", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67", "versionEndExcluding": "6.19.6", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/atmel-hlcdc: fix use-after-free of drm_crtc_commit after release\n\nThe atmel_hlcdc_plane_atomic_duplicate_state() callback was copying\nthe atmel_hlcdc_plane state structure without properly duplicating the\ndrm_plane_state. In particular, state->commit remained set to the old\nstate commit, which can lead to a use-after-free in the next\ndrm_atomic_commit() call.\n\nFix this by calling\n__drm_atomic_helper_duplicate_plane_state(), which correctly clones\nthe base drm_plane_state (including the ->commit pointer).\n\nIt has been seen when closing and re-opening the device node while\nanother DRM client (e.g. fbdev) is still attached:\n\n=============================================================================\nBUG kmalloc-64 (Not tainted): Poison overwritten\n-----------------------------------------------------------------------------\n\n0xc611b344-0xc611b344 @offset=836. First byte 0x6a instead of 0x6b\nFIX kmalloc-64: Restoring Poison 0xc611b344-0xc611b344=0x6b\nAllocated in drm_atomic_helper_setup_commit+0x1e8/0x7bc age=178 cpu=0\npid=29\n drm_atomic_helper_setup_commit+0x1e8/0x7bc\n drm_atomic_helper_commit+0x3c/0x15c\n drm_atomic_commit+0xc0/0xf4\n drm_framebuffer_remove+0x4cc/0x5a8\n drm_mode_rmfb_work_fn+0x6c/0x80\n process_one_work+0x12c/0x2cc\n worker_thread+0x2a8/0x400\n kthread+0xc0/0xdc\n ret_from_fork+0x14/0x28\nFreed in drm_atomic_helper_commit_hw_done+0x100/0x150 age=8 cpu=0\npid=169\n drm_atomic_helper_commit_hw_done+0x100/0x150\n drm_atomic_helper_commit_tail+0x64/0x8c\n commit_tail+0x168/0x18c\n drm_atomic_helper_commit+0x138/0x15c\n drm_atomic_commit+0xc0/0xf4\n drm_atomic_helper_set_config+0x84/0xb8\n drm_mode_setcrtc+0x32c/0x810\n drm_ioctl+0x20c/0x488\n sys_ioctl+0x14c/0xc20\n ret_fast_syscall+0x0/0x54\nSlab 0xef8bc360 objects=21 used=16 fp=0xc611b7c0\nflags=0x200(workingset|zone=0)\nObject 0xc611b340 @offset=832 fp=0xc611b7c0"}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/atmel-hlcdc: correcci\u00f3n de uso despu\u00e9s de liberaci\u00f3n de drm_crtc_commit despu\u00e9s de liberaci\u00f3n\n\nLa funci\u00f3n de callback atmel_hlcdc_plane_atomic_duplicate_state() estaba copiando la estructura de estado atmel_hlcdc_plane sin duplicar correctamente el drm_plane_state. En particular, state -> commit permaneci\u00f3 establecido al commit del estado antiguo, lo que puede llevar a un uso despu\u00e9s de liberaci\u00f3n en la siguiente llamada a drm_atomic_commit().\n\nEsto se soluciona llamando a __drm_atomic_helper_duplicate_plane_state(), que clona correctamente el drm_plane_state base (incluyendo el puntero -> commit).\n\nSe ha observado al cerrar y volver a abrir el nodo del dispositivo mientras otro cliente DRM (p. ej., fbdev) todav\u00eda est\u00e1 adjunto:\n\n=============================================================================\nBUG kmalloc-64 (No contaminado): Veneno sobrescrito\n-----------------------------------------------------------------------------\n\n0x c611b344-0x c611b344 @desplazamiento=836. Primer byte 0x6a en lugar de 0x6b\nCORRECCI\u00d3N kmalloc-64: Restaurando Veneno 0x c611b344-0x c611b344=0x6b\nAsignado en drm_atomic_helper_setup_commit+0x1e8/0x7bc edad=178 cpu=0 pid=29\n drm_atomic_helper_setup_commit+0x1e8/0x7bc\n drm_atomic_helper_commit+0x3c/0x15c\n drm_atomic_commit+0xc0/0xf4\n drm_framebuffer_remove+0x4cc/0x5a8\n drm_mode_rmfb_work_fn+0x6c/0x80\n process_one_work+0x12c/0x2cc\n worker_thread+0x2a8/0x400\n kthread+0xc0/0xdc\n ret_from_fork+0x14/0x28\nLiberado en drm_atomic_helper_commit_hw_done+0x100/0x150 edad=8 cpu=0 pid=169\n drm_atomic_helper_commit_hw_done+0x100/0x150\n drm_atomic_helper_commit_tail+0x64/0x8c\n commit_tail+0x168/0x18c\n drm_atomic_helper_commit+0x138/0x15c\n drm_atomic_commit+0xc0/0xf4\n drm_atomic_helper_set_config+0x84/0xb8\n drm_mode_setcrtc+0x32c/0x810\n drm_ioctl+0x20c/0x488\n sys_ioctl+0x14c/0xc20\n ret_fast_syscall+0x0/0x54\nSlab 0x ef8bc360 objetos=21 usados=16 fp=0x c611b7c0 flags=0x200(workingset|zone=0)\nObjeto 0x c611b340 @desplazamiento=832 fp=0x c611b7c0"}], "id": "CVE-2026-43236", "lastModified": "2026-11-11T20:10:00.273", "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"}]}, "published": "2026-05-06T12:16:43.817", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/549c6db503dbb85dbff4840830971853feac6625"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6404898af86d986db1dbbe06177c143e40652e49"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/796e77c14c4c1e2cd36473760fb6cc66c695eb47"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7b4d0fab3ff2c00c6d34e1952c9df5129a826aee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a205740a7231e967ac77cb731171642901c327af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ac2d898da5095d46bd1ff8585fdd753d58ad91e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/bc847787233277a337788568e90a6ee1557595eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/fd4a4d0711f48a99b25bcd45e00eef8339eff82d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}