{"id":"CVE-2022-50884","summary":"drm: Prevent drm_copy_field() to attempt copying a NULL pointer","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Prevent drm_copy_field() to attempt copying a NULL pointer\n\nThere are some struct drm_driver fields that are required by drivers since\ndrm_copy_field() attempts to copy them to user-space via DRM_IOCTL_VERSION.\n\nBut it can be possible that a driver has a bug and did not set some of the\nfields, which leads to drm_copy_field() attempting to copy a NULL pointer:\n\n[ +10.395966] Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000000000000000\n[  +0.010955] Mem abort info:\n[  +0.002835]   ESR = 0x0000000096000004\n[  +0.003872]   EC = 0x25: DABT (current EL), IL = 32 bits\n[  +0.005395]   SET = 0, FnV = 0\n[  +0.003113]   EA = 0, S1PTW = 0\n[  +0.003182]   FSC = 0x04: level 0 translation fault\n[  +0.004964] Data abort info:\n[  +0.002919]   ISV = 0, ISS = 0x00000004\n[  +0.003886]   CM = 0, WnR = 0\n[  +0.003040] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000115dad000\n[  +0.006536] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000\n[  +0.006925] Internal error: Oops: 96000004 [#1] SMP\n...\n[  +0.011113] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  +0.007061] pc : __pi_strlen+0x14/0x150\n[  +0.003895] lr : drm_copy_field+0x30/0x1a4\n[  +0.004156] sp : ffff8000094b3a50\n[  +0.003355] x29: ffff8000094b3a50 x28: ffff8000094b3b70 x27: 0000000000000040\n[  +0.007242] x26: ffff443743c2ba00 x25: 0000000000000000 x24: 0000000000000040\n[  +0.007243] x23: ffff443743c2ba00 x22: ffff8000094b3b70 x21: 0000000000000000\n[  +0.007241] x20: 0000000000000000 x19: ffff8000094b3b90 x18: 0000000000000000\n[  +0.007241] x17: 0000000000000000 x16: 0000000000000000 x15: 0000aaab14b9af40\n[  +0.007241] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n[  +0.007239] x11: 0000000000000000 x10: 0000000000000000 x9 : ffffa524ad67d4d8\n[  +0.007242] x8 : 0101010101010101 x7 : 7f7f7f7f7f7f7f7f x6 : 6c6e6263606e7141\n[  +0.007239] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000\n[  +0.007241] x2 : 0000000000000000 x1 : ffff8000094b3b90 x0 : 0000000000000000\n[  +0.007240] Call trace:\n[  +0.002475]  __pi_strlen+0x14/0x150\n[  +0.003537]  drm_version+0x84/0xac\n[  +0.003448]  drm_ioctl_kernel+0xa8/0x16c\n[  +0.003975]  drm_ioctl+0x270/0x580\n[  +0.003448]  __arm64_sys_ioctl+0xb8/0xfc\n[  +0.003978]  invoke_syscall+0x78/0x100\n[  +0.003799]  el0_svc_common.constprop.0+0x4c/0xf4\n[  +0.004767]  do_el0_svc+0x38/0x4c\n[  +0.003357]  el0_svc+0x34/0x100\n[  +0.003185]  el0t_64_sync_handler+0x11c/0x150\n[  +0.004418]  el0t_64_sync+0x190/0x194\n[  +0.003716] Code: 92402c04 b200c3e8 f13fc09f 5400088c (a9400c02)\n[  +0.006180] ---[ end trace 0000000000000000 ]---","modified":"2026-03-20T11:47:40.362064Z","published":"2025-12-30T12:34:11.390Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0350-1","SUSE-SU-2026:0369-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0473-1","SUSE-SU-2026:0617-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50884.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2d6708ea5c2033ff53267feff1876a717689989f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6cf5e9356b2d856403ee480f987f3ea64dbf8d8c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8052612b9d08048ebbebcb572894670b4ac07d2f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c28a8082b25ce4ec94999e10a30c50d20bd44a25"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca163e389f0ae096a4e1e19f0a95e60ed80b4e31"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cdde55f97298e5bb9af6d41c9303a3ec545a370e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d213914386a0ede76a4549b41de30192fb92c595"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ee9885cd936aad88f84d0cf90bf9a70e83e42a97"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6ee30407e883042482ad4ad30da5eaba47872ee"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50884.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50884"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"22eae947bf76e236ba972f2f11cfd1b083b736ad"},{"fixed":"d213914386a0ede76a4549b41de30192fb92c595"},{"fixed":"ee9885cd936aad88f84d0cf90bf9a70e83e42a97"},{"fixed":"8052612b9d08048ebbebcb572894670b4ac07d2f"},{"fixed":"cdde55f97298e5bb9af6d41c9303a3ec545a370e"},{"fixed":"c28a8082b25ce4ec94999e10a30c50d20bd44a25"},{"fixed":"ca163e389f0ae096a4e1e19f0a95e60ed80b4e31"},{"fixed":"2d6708ea5c2033ff53267feff1876a717689989f"},{"fixed":"6cf5e9356b2d856403ee480f987f3ea64dbf8d8c"},{"fixed":"f6ee30407e883042482ad4ad30da5eaba47872ee"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50884.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.16"},{"fixed":"4.9.331"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"4.14.296"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.262"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.220"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.150"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.20.0"},{"fixed":"6.0.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-50884.json"}}],"schema_version":"1.7.5"}