{"id":"CVE-2022-49803","summary":"netdevsim: Fix memory leak of nsim_dev-\u003efa_cookie","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: Fix memory leak of nsim_dev-\u003efa_cookie\n\nkmemleak reports this issue:\n\nunreferenced object 0xffff8881bac872d0 (size 8):\n  comm \"sh\", pid 58603, jiffies 4481524462 (age 68.065s)\n  hex dump (first 8 bytes):\n    04 00 00 00 de ad be ef                          ........\n  backtrace:\n    [\u003c00000000c80b8577\u003e] __kmalloc+0x49/0x150\n    [\u003c000000005292b8c6\u003e] nsim_dev_trap_fa_cookie_write+0xc1/0x210 [netdevsim]\n    [\u003c0000000093d78e77\u003e] full_proxy_write+0xf3/0x180\n    [\u003c000000005a662c16\u003e] vfs_write+0x1c5/0xaf0\n    [\u003c000000007aabf84a\u003e] ksys_write+0xed/0x1c0\n    [\u003c000000005f1d2e47\u003e] do_syscall_64+0x3b/0x90\n    [\u003c000000006001c6ec\u003e] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe issue occurs in the following scenarios:\n\nnsim_dev_trap_fa_cookie_write()\n  kmalloc() fa_cookie\n  nsim_dev-\u003efa_cookie = fa_cookie\n..\nnsim_drv_remove()\n\nThe fa_cookie allocked in nsim_dev_trap_fa_cookie_write() is not freed. To\nfix, add kfree(nsim_dev-\u003efa_cookie) to nsim_drv_remove().","modified":"2026-04-11T12:44:33.703086Z","published":"2025-05-01T14:09:30.971Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49803.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/064bc7312bd09a48798418663090be0c776183db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/207edad5717e0a5709ce8467f0eff41c607835c9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49803.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49803"},{"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":"d3cbb907ae57fe5da314b51d949b617b538bdeae"},{"fixed":"207edad5717e0a5709ce8467f0eff41c607835c9"},{"fixed":"064bc7312bd09a48798418663090be0c776183db"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49803.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"6.0.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49803.json"}}],"schema_version":"1.7.5"}