{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-10T05:11:29.117","vulnerabilities":[{"cve":{"id":"CVE-2022-50628","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-12-08T02:15:48.927","lastModified":"2026-04-15T00:35:42.020","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: Fix UBSAN warning\n\nUBSAN complains about invalid value for bool:\n\n[  101.165172] [drm] Initialized gud 1.0.0 20200422 for 2-3.2:1.0 on minor 1\n[  101.213360] gud 2-3.2:1.0: [drm] fb1: guddrmfb frame buffer device\n[  101.213426] usbcore: registered new interface driver gud\n[  101.989431] ================================================================================\n[  101.989441] UBSAN: invalid-load in linux/include/linux/iosys-map.h:253:9\n[  101.989447] load of value 121 is not a valid value for type '_Bool'\n[  101.989451] CPU: 1 PID: 455 Comm: kworker/1:6 Not tainted 5.18.0-rc5-gud-5.18-rc5 #3\n[  101.989456] Hardware name: Hewlett-Packard HP EliteBook 820 G1/1991, BIOS L71 Ver. 01.44 04/12/2018\n[  101.989459] Workqueue: events_long gud_flush_work [gud]\n[  101.989471] Call Trace:\n[  101.989474]  <TASK>\n[  101.989479]  dump_stack_lvl+0x49/0x5f\n[  101.989488]  dump_stack+0x10/0x12\n[  101.989493]  ubsan_epilogue+0x9/0x3b\n[  101.989498]  __ubsan_handle_load_invalid_value.cold+0x44/0x49\n[  101.989504]  dma_buf_vmap.cold+0x38/0x3d\n[  101.989511]  ? find_busiest_group+0x48/0x300\n[  101.989520]  drm_gem_shmem_vmap+0x76/0x1b0 [drm_shmem_helper]\n[  101.989528]  drm_gem_shmem_object_vmap+0x9/0xb [drm_shmem_helper]\n[  101.989535]  drm_gem_vmap+0x26/0x60 [drm]\n[  101.989594]  drm_gem_fb_vmap+0x47/0x150 [drm_kms_helper]\n[  101.989630]  gud_prep_flush+0xc1/0x710 [gud]\n[  101.989639]  ? _raw_spin_lock+0x17/0x40\n[  101.989648]  gud_flush_work+0x1e0/0x430 [gud]\n[  101.989653]  ? __switch_to+0x11d/0x470\n[  101.989664]  process_one_work+0x21f/0x3f0\n[  101.989673]  worker_thread+0x200/0x3e0\n[  101.989679]  ? rescuer_thread+0x390/0x390\n[  101.989684]  kthread+0xfd/0x130\n[  101.989690]  ? kthread_complete_and_exit+0x20/0x20\n[  101.989696]  ret_from_fork+0x22/0x30\n[  101.989706]  </TASK>\n[  101.989708] ================================================================================\n\nThe source of this warning is in iosys_map_clear() called from\ndma_buf_vmap(). It conditionally sets values based on map->is_iomem. The\niosys_map variables are allocated uninitialized on the stack leading to\n->is_iomem having all kinds of values and not only 0/1.\n\nFix this by zeroing the iosys_map variables."}],"metrics":{},"references":[{"url":"https://git.kernel.org/stable/c/832f861a46039d50536dcfda0a9fb334b48d0f8b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/951df98024f7272f85df5044eca7374f5b5b24ef","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e1078b270d218f8d58efb4d78ea25a4d16ba3490","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}]}}]}