{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-50217 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-50217 is a high-severity use after free vulnerability in Linux kernel, published on 9 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2024-50217 and fix it if it is affected.\n\nWhat it is: CVE-2024-50217 is a high-severity use after free vulnerability in Linux kernel, published on 9 Nov 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2024-50217 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-2024-50217/ (Markdown: https://insights.sbomify.com/CVE-2024-50217/index.md)","id":"CVE-2024-50217","markdown":"https://insights.sbomify.com/CVE-2024-50217/index.md","name":"CVE-2024-50217","record":{"aliases":["AZL-53057","AZL-53096","BELL-CVE-2024-50217","DEBIAN-CVE-2024-50217","GHSA-5684-4xfg-mxj4","ROOT-OS-DEBIAN-11-CVE-2024-50217","ROOT-OS-DEBIAN-12-CVE-2024-50217","ROOT-OS-UBUNTU-2204-CVE-2024-50217","ROOT-OS-UBUNTU-2404-CVE-2024-50217","UBUNTU-CVE-2024-50217"],"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":"none","summary":"A use-after-free in the Linux kernel btrfs filesystem allows local attackers to potentially execute code or escalate privileges via crafted mount sequences.","user_interaction":"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:N/UI:R/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\nbtrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()\n\nMounting btrfs from two images (which have the same one fsid and two\ndifferent dev_uuids) in certain executing order may trigger an UAF for\nvariable 'device-\u003ebdev_file' in __btrfs_free_extra_devids(). And\nfollowing are the details:\n\n1. Attach image_1 to loop0, attach image_2 to loop1, and scan btrfs\n   devices by ioctl(BTRFS_IOC_SCAN_DEV):\n\n             /  btrfs_device_1 → loop0\n   fs_device\n             \\  btrfs_device_2 → loop1\n2. mount /dev/loop0 /mnt\n   btrfs_open_devices\n    btrfs_device_1-\u003ebdev_file = btrfs_get_bdev_and_sb(loop0)\n    btrfs_device_2-\u003ebdev_file = btrfs_get_bdev_and_sb(loop1)\n   btrfs_fill_super\n    open_ctree\n     fail: btrfs_close_devices // -ENOMEM\n\t    btrfs_close_bdev(btrfs_device_1)\n             fput(btrfs_device_1-\u003ebdev_file)\n\t      // btrfs_device_1-\u003ebdev_file is freed\n\t    btrfs_close_bdev(btrfs_device_2)\n             fput(btrfs_device_2-\u003ebdev_file)\n\n3. mount /dev/loop1 /mnt\n   btrfs_open_devices\n    btrfs_get_bdev_and_sb(\u0026bdev_file)\n     // EIO, btrfs_device_1-\u003ebdev_file is not assigned,\n     // which points to a freed memory area\n    btrfs_device_2-\u003ebdev_file = btrfs_get_bdev_and_sb(loop1)\n   btrfs_fill_super\n    open_ctree\n     btrfs_free_extra_devids\n      if (btrfs_device_1-\u003ebdev_file)\n       fput(btrfs_device_1-\u003ebdev_file) // UAF !\n\nFix it by setting 'device-\u003ebdev_file' as 'NULL' after closing the\nbtrfs_device in btrfs_close_one_device().","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":"btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()","id":"CVE-2024-50217","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2024"},"n_packages":0,"n_references":2,"next":{"headline":"ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow","id":"CVE-2024-50218"},"packages":[],"prev":{"headline":"xfs: fix finding a last resort AG in xfs_filestream_pick_ag","id":"CVE-2024-50216"},"products":["Linux"],"published":"2024-11-09","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 in the Linux kernel btrfs filesystem allows local attackers to potentially execute code or escalate privileges via crafted mount sequences.","url":"https://insights.sbomify.com/CVE-2024-50217/"}