{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-49390 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-49390 is a high-severity use after free vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-49390 and fix it if it is affected.\n\nWhat it is: CVE-2022-49390 is a high-severity use after free vulnerability in Linux kernel, published on 26 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2022-49390 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2022-49390/ (Markdown: https://insights.sbomify.com/CVE-2022-49390/index.md)","id":"CVE-2022-49390","markdown":"https://insights.sbomify.com/CVE-2022-49390/index.md","name":"CVE-2022-49390","record":{"aliases":["DEBIAN-CVE-2022-49390","GHSA-w9jf-hmj5-fp54","ROOT-OS-DEBIAN-11-CVE-2022-49390","ROOT-OS-UBUNTU-2204-CVE-2022-49390","UBUNTU-CVE-2022-49390"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel MACsec driver allows attackers to potentially execute code or escalate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmacsec: fix UAF bug for real_dev\n\nCreate a new macsec device but not get reference to real_dev. That can\nnot ensure that real_dev is freed after macsec. That will trigger the\nUAF bug for real_dev as following:\n\n==================================================================\nBUG: KASAN: use-after-free in macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662\nCall Trace:\n ...\n macsec_get_iflink+0x5f/0x70 drivers/net/macsec.c:3662\n dev_get_iflink+0x73/0xe0 net/core/dev.c:637\n default_operstate net/core/link_watch.c:42 [inline]\n rfc2863_policy+0x233/0x2d0 net/core/link_watch.c:54\n linkwatch_do_dev+0x2a/0x150 net/core/link_watch.c:161\n\nAllocated by task 22209:\n ...\n alloc_netdev_mqs+0x98/0x1100 net/core/dev.c:10549\n rtnl_create_link+0x9d7/0xc00 net/core/rtnetlink.c:3235\n veth_newlink+0x20e/0xa90 drivers/net/veth.c:1748\n\nFreed by task 8:\n ...\n kfree+0xd6/0x4d0 mm/slub.c:4552\n kvfree+0x42/0x50 mm/util.c:615\n device_release+0x9f/0x240 drivers/base/core.c:2229\n kobject_cleanup lib/kobject.c:673 [inline]\n kobject_release lib/kobject.c:704 [inline]\n kref_put include/linux/kref.h:65 [inline]\n kobject_put+0x1c8/0x540 lib/kobject.c:721\n netdev_run_todo+0x72e/0x10b0 net/core/dev.c:10327\n\nAfter commit faab39f63c1f (\"net: allow out-of-order netdev unregistration\")\nand commit e5f80fcf869a (\"ipv6: give an IPv6 dev to blackhole_netdev\"), we\ncan add dev_hold_track() in macsec_dev_init() and dev_put_track() in\nmacsec_free_netdev() to fix the problem.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"macsec: fix UAF bug for real_dev","id":"CVE-2022-49390","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2022"},"n_packages":0,"n_references":3,"next":{"headline":"remoteproc: mtk_scp: Fix a potential double free","id":"CVE-2022-49391"},"packages":[],"prev":{"headline":"usb: usbip: fix a refcount leak in stub_probe()","id":"CVE-2022-49389"},"products":["Linux"],"published":"2025-02-26","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel MACsec driver allows attackers to potentially execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2022-49390/"}