CVE-2024-50213

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/tests: hdmi: Fix memory leaks in drm_display_mode_from_cea_vic()<br /> <br /> modprobe drm_hdmi_state_helper_test and then rmmod it, the following<br /> memory leak occurs.<br /> <br /> The `mode` allocated in drm_mode_duplicate() called by<br /> drm_display_mode_from_cea_vic() is not freed, which cause the memory leak:<br /> <br /> unreferenced object 0xffffff80ccd18100 (size 128):<br /> comm "kunit_try_catch", pid 1851, jiffies 4295059695<br /> hex dump (first 32 bytes):<br /> 57 62 00 00 80 02 90 02 f0 02 20 03 00 00 e0 01 Wb........ .....<br /> ea 01 ec 01 0d 02 00 00 0a 00 00 00 00 00 00 00 ................<br /> backtrace (crc c2f1aa95):<br /> [] kmemleak_alloc+0x34/0x40<br /> [] __kmalloc_cache_noprof+0x26c/0x2f4<br /> [] drm_mode_duplicate+0x44/0x19c<br /> [] drm_display_mode_from_cea_vic+0x88/0x98<br /> [] 0xffffffedc11ae69c<br /> [] kunit_try_run_case+0x13c/0x3ac<br /> [] kunit_generic_run_threadfn_adapter+0x80/0xec<br /> [] kthread+0x2e8/0x374<br /> [] ret_from_fork+0x10/0x20<br /> ......<br /> <br /> Free `mode` by using drm_kunit_display_mode_from_cea_vic()<br /> to fix it.