{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  drm/imagination: acquire vm_ctx-\u003elock before mapping memory to GPU VM  The drm gpuvm code doesn't protect find operation against map operation, and the driver needs to ensure a map operation shouldn't happen when a find operation is in progress.  In some cases a find operation will be in progress when doing map/unmap operations, and the find operation will do a NULL pointer dereference.  An example of the stack trace of such NULL dereference is shown below:  ``` Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000000000010  [\u003cffffffff01e989d4\u003e] drm_gpuva_find+0x28/0x6c [drm_gpuvm] [\u003cffffffff01ed3a40\u003e] pvr_vm_unmap+0x34/0x68 [powervr] [\u003cffffffff01ec69da\u003e] pvr_ioctl_vm_unmap+0x2e/0x50 [powervr] [\u003cffffffff8080ce0a\u003e] drm_ioctl_kernel+0x8e/0xdc [\u003cffffffff8080d016\u003e] drm_ioctl+0x1be/0x3e0 [\u003cffffffff802bec3e\u003e] __riscv_sys_ioctl+0xba/0xc4 [\u003cffffffff80d858b2\u003e] do_trap_ecall_u+0x23e/0x3f4 [\u003cffffffff80d92288\u003e] handle_exception+0x168/0x174 ```  As all occurences of drm_gpuva_find*() are already guarded by vm_ctx-\u003elock, make pvr_vm_map() to acquire this lock to prevent disturbing any find operation. This fixes the NULL deference problem in drm_gpuva_find*().",
  "id": "DEBIAN-CVE-2026-68260",
  "modified": "2026-09-14T16:47:32.509846423Z",
  "published": "2026-08-10T13:20:14.720Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-68260"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-68260"
  ]
}