CVE-2022-49803

In the Linux kernel, the following vulnerability has been resolved: netdevsim: Fix memory leak of nsim_dev->fa_cookie kmemleak reports this issue: unreferenced object 0xffff8881bac872d0 (size 8): comm "sh", pid 58603, jiffies 4481524462 (age 68.065s) hex dump (first 8 bytes): 04 00 00 00 de ad be ef ........ backtrace: [ ] __kmalloc+0x49/0x150 [ ] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim] [ ] full_proxy_write+0xf3/0x180 [ ] vfs_write+0x1c5/0xaf0 [ ] ksys_write+0xed/0x1c0 [ ] do_syscall_64+0x3b/0x90 [ ] entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue occurs in the following scenarios: nsim_dev_trap_fa_cookie_write() kmalloc() fa_cookie nsim_dev->fa_cookie = fa_cookie .. nsim_drv_remove() The fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To fix, add kfree(nsim_dev->fa_cookie) to nsim_drv_remove().