drm/gma500: Fix BUG: sleeping function called from invalid context errors

{
  "id": "69d587e7d367138cfe72eb222525909f108c251dc375b6fd147830bc6bf48469",
  "url": "https://osv.dev/vulnerability/CVE-2022-48634",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/gma500: Fix BUG: sleeping function called from invalid context errors",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/gma500: Fix BUG: sleeping function called from invalid context errors gma_crtc_page_flip() was holding the event_lock spinlock while calling crtc_funcs->mode_set_base() which takes ww_mutex. The only reason to hold event_lock is to clear gma_crtc->page_flip_event on mode_set_base() errors. Instead unlock it after setting gma_crtc->page_flip_event and on errors re-take the lock and clear gma_crtc->page_flip_event it it is still set. This fixes the following WARN/stacktrace: [ 512.122953] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:870 [ 512.123004] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1253, name: gnome-shell [ 512.123031] preempt_count: 1, expected: 0 [ 512.123048] RCU nest depth: 0, expected: 0 [ 512.123066] INFO: lockdep is turned off. [ 512.123080] irq event stamp: 0 [ 512.123094] hardirqs last enabled at (0): [<0000000000000000>] 0x0 [ 512.123134] hardirqs last disabled at (0): [] copy_process+0x9fc/0x1de0 [ 512.123176] softirqs last enabled at (0): [] copy_process+0x9fc/0x1de0 [ 512.123207] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 512.123233] Preemption disabled at: [ 512.123241] [<0000000000000000>] 0x0 [ 512.123275] CPU: 3 PID: 1253 Comm: gnome-shell Tainted: G W 5.19.0+ #1 [ 512.123304] Hardware name: Packard Bell dot s/SJE01_CT, BIOS V1.10 07/23/2013 [ 512.123323] Call Trace: [ 512.123346] [ 512.123370] dump_stack_lvl+0x5b/0x77 [ ",
    "evidence": "osv:CVE-2022-48634",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.146",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.71",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.19.12",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-48634",
      "aliases": [
        "CVE-2022-48634"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "f76c22ce8fbbd03394eb9e2cd8c490d9ad2a116c"
                },
                {
                  "fixed": "c5812807e416618477d1bb0049727ce8bb8292fd"
                },
                {
                  "fixed": "e5ae504c8623476e13032670f1a6d6344d53ec9b"
                },
                {
                  "fixed": "a6ed7624bf4d0a32f2631e74828bca7b7bf15afd"
                },
                {
                  "fixed": "63e37a79f7bd939314997e29c2f5a9f0ef184281"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48634.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.6.0"
                },
                {
                  "fixed": "5.10.146"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.71"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "5.19.12"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48634.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.384352001Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/63e37a79f7bd939314997e29c2f5a9f0ef184281",
        "https://git.kernel.org/stable/c/a6ed7624bf4d0a32f2631e74828bca7b7bf15afd",
        "https://git.kernel.org/stable/c/c5812807e416618477d1bb0049727ce8bb8292fd",
        "https://git.kernel.org/stable/c/e5ae504c8623476e13032670f1a6d6344d53ec9b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48634.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-48634",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48634.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-48634",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493677,
  "published_at": "2024-04-28T12:59:19.749+00:00"
}