{"cve":"CVE-2022-49853","nvd":{"published":"2025-05-01T15:16:08.890","modified":"2026-06-17T05:19:18.650","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: macvlan: fix memory leaks of macvlan_common_newlink\n\nkmemleak reports memory leaks in macvlan_common_newlink, as follows:\n\n ip link add link eth0 name .. type macvlan mode source macaddr add\n <MAC-ADDR>\n\nkmemleak reports:\n\nunreferenced object 0xffff8880109bb140 (size 64):\n  comm \"ip\", pid 284, jiffies 4294986150 (age 430.108s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 b8 aa 5a 12 80 88 ff ff  ..........Z.....\n    80 1b fa 0d 80 88 ff ff 1e ff ac af c7 c1 6b 6b  ..............kk\n  backtrace:\n    [<ffffffff813e06a7>] kmem_cache_alloc_trace+0x1c7/0x300\n    [<ffffffff81b66025>] macvlan_hash_add_source+0x45/0xc0\n    [<ffffffff81b66a67>] macvlan_changelink_sources+0xd7/0x170\n    [<ffffffff81b6775c>] macvlan_common_newlink+0x38c/0x5a0\n    [<ffffffff81b6797e>] macvlan_newlink+0xe/0x20\n    [<ffffffff81d97f8f>] __rtnl_newlink+0x7af/0xa50\n    [<ffffffff81d98278>] rtnl_newlink+0x48/0x70\n    ...\n\nIn the scenario where the macvlan mode is configured as 'source',\nmacvlan_changelink_sources() will be execured to reconfigure list of\nremote source mac addresses, at the same time, if register_netdevice()\nreturn an error, the resource generated by macvlan_changelink_sources()\nis not cleaned up.\n\nUsing this patch, in the case of an error, it will execute\nmacvlan_flush_sources() to ensure that the resource is cleaned up.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/21d3a8b6a1e39e7529ce9de07316ee13a63f305b","https://git.kernel.org/stable/c/23569b5652ee8e8e55a12f7835f59af6f3cefc30","https://git.kernel.org/stable/c/685e73e3f7a9fb75cbf049a9d0b7c45cc6b57b2e","https://git.kernel.org/stable/c/956e0216a19994443c90ba2ea6b0b284c9c4f9cb","https://git.kernel.org/stable/c/9ea003c4671b2fc455320ecf6d4a43b0a3c1878a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:22.920403922+00:00"},"epss":{"cve":"CVE-2022-49853","score":0.00224,"percentile":0.1305,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}