{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ca91a2758fcef6635626993557dd51cfbb6dd134"
            },
            {
              "fixed": "423c871a586cff8b29f48db00e3c45c21d0e8121"
            },
            {
              "fixed": "e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1"
            },
            {
              "fixed": "9124411cb91b129ff3ffb0d723ecba7a5bf893f9"
            },
            {
              "fixed": "4a2006c675758f0c765b36fec6b49d17e89159cf"
            },
            {
              "fixed": "3b303696f61461b3569019d7fcac6a646652b2b4"
            },
            {
              "fixed": "4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457"
            },
            {
              "fixed": "d510ed273854177f0a3ed330145858b2fe667f81"
            },
            {
              "fixed": "755c94d178b7e972bb766199d34e4ba4f63a89eb"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.14.0"
            },
            {
              "fixed": "5.10.273"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.224"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.191"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.160"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.57"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99007.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN\n\n__drm_fb_helper_initial_config_and_unlock() calls\ndrm_client_modeset_probe() first, which already fills in each\nmode_set-\u003emode/num_connectors for every connected output, and only\nafterwards calls drm_fb_helper_single_fb_probe() to create\nfb_helper-\u003efb and wire it into those mode_sets via\ndrm_setup_crtcs_fb().\n\nIf drm_fb_helper_single_fb_probe() fails with anything other than\n-EAGAIN (e.g. dev-\u003edriver-\u003efbdev_probe() itself fails), the function\nbails out before drm_setup_crtcs_fb() runs and before setting\nfb_helper-\u003edeferred_setup. The client is left with mode_sets that\nhave a mode and connectors but mode_set-\u003efb == NULL, and nothing\nmarks this fb_helper as needing a retry.\n\n__drm_fb_helper_restore_fbdev_mode_unlocked() only skips committing\nwhen fb_helper-\u003edeferred_setup is set, so a later .restore() call\n(drm_lastclose() on process exit, in this report) commits the stale\nmode_set through drm_client_modeset_commit() -\u003e\ndrm_client_modeset_commit_atomic() -\u003e __drm_atomic_helper_set_config(),\nwhich hits WARN_ON(!set-\u003efb).\n\nMark fb_helper-\u003edeferred_setup on any drm_fb_helper_single_fb_probe()\nfailure, not just -EAGAIN, so restore keeps skipping the commit until\na later hotplug event successfully re-probes and re-populates\nmode_set-\u003efb. The real error code is still returned to the caller\nunchanged.",
  "id": "CVE-2026-99007",
  "modified": "2026-11-01T02:30:53.646614267Z",
  "published": "2026-10-23T12:20:32.381Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3b303696f61461b3569019d7fcac6a646652b2b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/423c871a586cff8b29f48db00e3c45c21d0e8121"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a2006c675758f0c765b36fec6b49d17e89159cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e7b508c7c60dec7a86b7eb2a1b7e6d174afa457"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/755c94d178b7e972bb766199d34e4ba4f63a89eb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9124411cb91b129ff3ffb0d723ecba7a5bf893f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d510ed273854177f0a3ed330145858b2fe667f81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5f8f6e0f0a18c77c04b757d72319d897a0b4bc1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99007.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99007"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "drm/fb-helper: defer setup when fbdev_probe() fails, not just on -EAGAIN"
}