fkie_cve-2025-38175
Vulnerability from fkie_nvd
Published
2025-07-04 11:15
Modified
2025-07-08 16:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: binder: fix yet another UAF in binder_devices Commit e77aff5528a18 ("binderfs: fix use-after-free in binder_devices") addressed a use-after-free where devices could be released without first being removed from the binder_devices list. However, there is a similar path in binder_free_proc() that was missed: ================================================================== BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100 Write of size 8 at addr ffff0000c773b900 by task umount/467 CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: binder_remove_device+0xd4/0x100 binderfs_evict_inode+0x230/0x2f0 evict+0x25c/0x5dc iput+0x304/0x480 dentry_unlink_inode+0x208/0x46c __dentry_kill+0x154/0x530 [...] Allocated by task 463: __kmalloc_cache_noprof+0x13c/0x324 binderfs_binder_device_create.isra.0+0x138/0xa60 binder_ctl_ioctl+0x1ac/0x230 [...] Freed by task 215: kfree+0x184/0x31c binder_proc_dec_tmpref+0x33c/0x4ac binder_deferred_func+0xc10/0x1108 process_one_work+0x520/0xba4 [...] ================================================================== Call binder_remove_device() within binder_free_proc() to ensure the device is removed from the binder_devices list before being kfreed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a7694f499cae5b83412c5281bf2c961f34f2ed6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/72a726fb5f25fbb31d6060acfb671c1955831245
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9857af0fcff385c75433f2162c30c62eb912ef6d
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix yet another UAF in binder_devices\n\nCommit e77aff5528a18 (\"binderfs: fix use-after-free in binder_devices\")\naddressed a use-after-free where devices could be released without first\nbeing removed from the binder_devices list. However, there is a similar\npath in binder_free_proc() that was missed:\n\n  ==================================================================\n  BUG: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100\n  Write of size 8 at addr ffff0000c773b900 by task umount/467\n  CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT\n  Hardware name: linux,dummy-virt (DT)\n  Call trace:\n   binder_remove_device+0xd4/0x100\n   binderfs_evict_inode+0x230/0x2f0\n   evict+0x25c/0x5dc\n   iput+0x304/0x480\n   dentry_unlink_inode+0x208/0x46c\n   __dentry_kill+0x154/0x530\n   [...]\n\n  Allocated by task 463:\n   __kmalloc_cache_noprof+0x13c/0x324\n   binderfs_binder_device_create.isra.0+0x138/0xa60\n   binder_ctl_ioctl+0x1ac/0x230\n  [...]\n\n  Freed by task 215:\n   kfree+0x184/0x31c\n   binder_proc_dec_tmpref+0x33c/0x4ac\n   binder_deferred_func+0xc10/0x1108\n   process_one_work+0x520/0xba4\n  [...]\n  ==================================================================\n\nCall binder_remove_device() within binder_free_proc() to ensure the\ndevice is removed from the binder_devices list before being kfreed."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: binder: corrige otro UAF en binder_devices El commit e77aff5528a18 (\"binderfs: corrige uuse-after-free en binder_devices\") abord\u00f3 un use-after-free donde los dispositivos pod\u00edan liberarse sin eliminarse primero de la lista binder_devices. Sin embargo, hay una ruta similar en binder_free_proc() que se omiti\u00f3: ====================================================================== ERROR: KASAN: slab-use-after-free in binder_remove_device+0xd4/0x100 Write of size 8 at addr ffff0000c773b900 by task umount/467 CPU: 12 UID: 0 PID: 467 Comm: umount Not tainted 6.15.0-rc7-00138-g57483a362741 #9 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: binder_remove_device+0xd4/0x100 binderfs_evict_inode+0x230/0x2f0 evict+0x25c/0x5dc iput+0x304/0x480 dentry_unlink_inode+0x208/0x46c __dentry_kill+0x154/0x530 [...] Allocated by task 463: __kmalloc_cache_noprof+0x13c/0x324 binderfs_binder_device_create.isra.0+0x138/0xa60 binder_ctl_ioctl+0x1ac/0x230 [...] Freed by task 215: kfree+0x184/0x31c binder_proc_dec_tmpref+0x33c/0x4ac binder_deferred_func+0xc10/0x1108 process_one_work+0x520/0xba4 [...] ====================================================================== Llame a binder_remove_device() dentro de binder_free_proc() para asegurarse de que el dispositivo se elimine de la lista binder_devices antes de ser liberado."
    }
  ],
  "id": "CVE-2025-38175",
  "lastModified": "2025-07-08T16:18:53.607",
  "metrics": {},
  "published": "2025-07-04T11:15:51.420",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4a7694f499cae5b83412c5281bf2c961f34f2ed6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/72a726fb5f25fbb31d6060acfb671c1955831245"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9857af0fcff385c75433f2162c30c62eb912ef6d"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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