CVE-2026-23184

{"id": "CVE-2026-23184", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-02-14T17:15:56.167", "references": [{"url": "https://git.kernel.org/stable/c/5e8a3d01544282e50d887d76f30d1496a0a53562", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a6050dedb6f1cc23e518e3a132ab74a0aad6df90", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix UAF in binder_netlink_report()\n\nOneway transactions sent to frozen targets via binder_proc_transaction()\nreturn a BR_TRANSACTION_PENDING_FROZEN error but they are still treated\nas successful since the target is expected to thaw at some point. It is\nthen not safe to access 't' after BR_TRANSACTION_PENDING_FROZEN errors\nas the transaction could have been consumed by the now thawed target.\n\nThis is the case for binder_netlink_report() which derreferences 't'\nafter a pending frozen error, as pointed out by the following KASAN\nreport:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in binder_netlink_report.isra.0+0x694/0x6c8\n Read of size 8 at addr ffff00000f98ba38 by task binder-util/522\n\n CPU: 4 UID: 0 PID: 522 Comm: binder-util Not tainted 6.19.0-rc6-00015-gc03e9c42ae8f #1 PREEMPT\n Hardware name: linux,dummy-virt (DT)\n Call trace:\n binder_netlink_report.isra.0+0x694/0x6c8\n binder_transaction+0x66e4/0x79b8\n binder_thread_write+0xab4/0x4440\n binder_ioctl+0x1fd4/0x2940\n [...]\n\n Allocated by task 522:\n __kmalloc_cache_noprof+0x17c/0x50c\n binder_transaction+0x584/0x79b8\n binder_thread_write+0xab4/0x4440\n binder_ioctl+0x1fd4/0x2940\n [...]\n\n Freed by task 488:\n kfree+0x1d0/0x420\n binder_free_transaction+0x150/0x234\n binder_thread_read+0x2d08/0x3ce4\n binder_ioctl+0x488/0x2940\n [...]\n ==================================================================\n\nInstead, make a transaction copy so the data can be safely accessed by\nbinder_netlink_report() after a pending frozen error. While here, add a\ncomment about not using t->buffer in binder_netlink_report()."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbinder: corregir UAF en binder_netlink_report()\n\nLas transacciones unidireccionales enviadas a objetivos congelados a trav\u00e9s de binder_proc_transaction() devuelven un error BR_TRANSACTION_PENDING_FROZEN pero a\u00fan se tratan como exitosas ya que se espera que el objetivo se descongele en alg\u00fan momento. Por lo tanto, no es seguro acceder a 't' despu\u00e9s de errores BR_TRANSACTION_PENDING_FROZEN, ya que la transacci\u00f3n podr\u00eda haber sido consumida por el objetivo ahora descongelado.\n\nEste es el caso de binder_netlink_report() que desreferencia 't' despu\u00e9s de un error de congelaci\u00f3n pendiente, como lo se\u00f1ala el siguiente informe KASAN:\n\n ==================================================================\n ERROR: KASAN: uso despu\u00e9s de liberaci\u00f3n de slab en binder_netlink_report.isra.0+0x694/0x6c8\n Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff00000f98ba38 por la tarea binder-util/522\n\n CPU: 4 UID: 0 PID: 522 Comm: binder-util No contaminado 6.19.0-rc6-00015-gc03e9c42ae8f #1 PREEMPT\n Nombre del hardware: linux,dummy-virt (DT)\n Rastro de llamada:\n binder_netlink_report.isra.0+0x694/0x6c8\n binder_transaction+0x66e4/0x79b8\n binder_thread_write+0xab4/0x4440\n binder_ioctl+0x1fd4/0x2940\n [...]\n\n Asignado por la tarea 522:\n __kmalloc_cache_noprof+0x17c/0x50c\n binder_transaction+0x584/0x79b8\n binder_thread_write+0xab4/0x4440\n binder_ioctl+0x1fd4/0x2940\n [...]\n\n Liberado por la tarea 488:\n kfree+0x1d0/0x420\n binder_free_transaction+0x150/0x234\n binder_thread_read+0x2d08/0x3ce4\n binder_ioctl+0x488/0x2940\n [...]\n ==================================================================\n\nEn su lugar, haga una copia de la transacci\u00f3n para que los datos puedan ser accedidos de forma segura por binder_netlink_report() despu\u00e9s de un error de congelaci\u00f3n pendiente. Ya que estamos, a\u00f1ada un comentario sobre no usar t->buffer en binder_netlink_report()."}], "lastModified": "2026-04-03T14:16:26.100", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "32F6354D-FB80-4DEC-B5BD-29DA22C31C55", "versionEndExcluding": "6.18.10", "versionStartIncluding": "6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}