{
  "cveId": "CVE-2026-89449",
  "url": "https://patchblox.com/security/cve/CVE-2026-89449",
  "summary": "CVE-2026-89449 is fixed in linux on 1 platform by DEBIAN-CVE-2026-89449 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  iommu: Fix dev_iommu memory leak when device_add...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  iommu: Fix dev_iommu memory leak when device_add fails in iommu_mock_device_add  iommu_mock_device_add() first calls iommu_fwspec_init(), which on success allocates both dev-\u003Eiommu (via dev_iommu_get()) and dev-\u003Eiommu-\u003Efwspec. If the subsequent device_add(dev) call fails, the error path only calls iommu_fwspec_free(dev), which frees fwspec but leaves dev-\u003Eiommu still allocated.  This triggers the following kmemleak report when fuzzing with Syzkaller:  BUG: memory leak unreferenced object 0xffff888011e0a200 (size 192):   comm \u0022syz.1.1695\u0022, pid 24885, jiffies 4295222527   hex dump (first 32 bytes):     00 00 00 00 00 00 00 00 00 00 00 00 ad 4e ad de  .............N..     ff ff ff ff 00 00 00 00 ff ff ff ff ff ff ff ff  ................   backtrace (crc 25df5bb3):     kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]     slab_post_alloc_hook mm/slub.c:4575 [inline]     slab_alloc_node mm/slub.c:4899 [inline]     __kmalloc_cache_noprof\u002B0x47a/0x710 mm/slub.c:5415     kmalloc_noprof include/linux/slab.h:950 [inline]     kzalloc_noprof include/linux/slab.h:1188 [inline]     dev_iommu_get\u002B0x10c/0x1a0 drivers/iommu/iommu.c:408     iommu_fwspec_init\u002B0x288/0x4d0 drivers/iommu/iommu.c:3087     iommu_mock_device_add\u002B0x46/0xb0 drivers/iommu/iommu.c:385     mock_dev_create drivers/iommu/iommufd/selftest.c:1025 [inline]     iommufd_test_mock_domain drivers/iommu/iommufd/selftest.c:1066 [inline]     iommufd_test\u002B0x2f8a/0x6190 drivers/iommu/iommufd/selftest.c:2072     iommufd_fops_ioctl\u002B0x367/0x540 drivers/iommu/iommufd/main.c:533     vfs_ioctl fs/ioctl.c:51 [inline]     __do_sys_ioctl fs/ioctl.c:597 [inline]     __se_sys_ioctl fs/ioctl.c:583 [inline]     __x64_sys_ioctl\u002B0x18e/0x210 fs/ioctl.c:583     do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]     do_syscall_64\u002B0x116/0x800 arch/x86/entry/syscall_64.c:94     entry_SYSCALL_64_after_hwframe\u002B0x77/0x7f  Fix this by calling dev_iommu_free(dev) instead of iommu_fwspec_free(dev) in the device_add() failure path. dev_iommu_free() frees both fwspec and the outer dev_iommu struct and clears dev-\u003Eiommu.",
  "published": "2026-09-11T20:19:25Z",
  "severity": "",
  "epss": 0.00206,
  "epssPercentile": 0.1079,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89449",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89449",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}