{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-43900 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-43900 is a high-severity use after free vulnerability in Linux kernel, published on 26 Aug 2024. 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-2024-43900 and fix it if it is affected.\n\nWhat it is: CVE-2024-43900 is a high-severity use after free vulnerability in Linux kernel, published on 26 Aug 2024. 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-2024-43900 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-2024-43900/ (Markdown: https://insights.sbomify.com/CVE-2024-43900/index.md)","id":"CVE-2024-43900","markdown":"https://insights.sbomify.com/CVE-2024-43900/index.md","name":"CVE-2024-43900","record":{"aliases":["AZL-48231","BELL-CVE-2024-43900","DEBIAN-CVE-2024-43900","GHSA-8j3f-9fhh-xf4c","ROOT-OS-DEBIAN-11-CVE-2024-43900","UBUNTU-CVE-2024-43900"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel media driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel's xc2028 media driver allows attackers to cause a system crash or potentially execute arbitrary code.","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":"nvd","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\nmedia: xc2028: avoid use-after-free in load_firmware_cb()\n\nsyzkaller reported use-after-free in load_firmware_cb() [1].\nThe reason is because the module allocated a struct tuner in tuner_probe(),\nand then the module initialization failed, the struct tuner was released.\nA worker which created during module initialization accesses this struct\ntuner later, it caused use-after-free.\n\nThe process is as follows:\n\ntask-6504           worker_thread\ntuner_probe                             \u003c= alloc dvb_frontend [2]\n...\nrequest_firmware_nowait                 \u003c= create a worker\n...\ntuner_remove                            \u003c= free dvb_frontend\n...\n                    request_firmware_work_func  \u003c= the firmware is ready\n                    load_firmware_cb    \u003c= but now the dvb_frontend has been freed\n\nTo fix the issue, check the dvd_frontend in load_firmware_cb(), if it is\nnull, report a warning and just return.\n\n[1]:\n    ==================================================================\n     BUG: KASAN: use-after-free in load_firmware_cb+0x1310/0x17a0\n     Read of size 8 at addr ffff8000d7ca2308 by task kworker/2:3/6504\n\n     Call trace:\n      load_firmware_cb+0x1310/0x17a0\n      request_firmware_work_func+0x128/0x220\n      process_one_work+0x770/0x1824\n      worker_thread+0x488/0xea0\n      kthread+0x300/0x430\n      ret_from_fork+0x10/0x20\n\n     Allocated by task 6504:\n      kzalloc\n      tuner_probe+0xb0/0x1430\n      i2c_device_probe+0x92c/0xaf0\n      really_probe+0x678/0xcd0\n      driver_probe_device+0x280/0x370\n      __device_attach_driver+0x220/0x330\n      bus_for_each_drv+0x134/0x1c0\n      __device_attach+0x1f4/0x410\n      device_initial_probe+0x20/0x30\n      bus_probe_device+0x184/0x200\n      device_add+0x924/0x12c0\n      device_register+0x24/0x30\n      i2c_new_device+0x4e0/0xc44\n      v4l2_i2c_new_subdev_board+0xbc/0x290\n      v4l2_i2c_new_subdev+0xc8/0x104\n      em28xx_v4l2_init+0x1dd0/0x3770\n\n     Freed by task 6504:\n      kfree+0x238/0x4e4\n      tuner_remove+0x144/0x1c0\n      i2c_device_remove+0xc8/0x290\n      __device_release_driver+0x314/0x5fc\n      device_release_driver+0x30/0x44\n      bus_remove_device+0x244/0x490\n      device_del+0x350/0x900\n      device_unregister+0x28/0xd0\n      i2c_unregister_device+0x174/0x1d0\n      v4l2_device_unregister+0x224/0x380\n      em28xx_v4l2_init+0x1d90/0x3770\n\n     The buggy address belongs to the object at ffff8000d7ca2000\n      which belongs to the cache kmalloc-2k of size 2048\n     The buggy address is located 776 bytes inside of\n      2048-byte region [ffff8000d7ca2000, ffff8000d7ca2800)\n     The buggy address belongs to the page:\n     page:ffff7fe00035f280 count:1 mapcount:0 mapping:ffff8000c001f000 index:0x0\n     flags: 0x7ff800000000100(slab)\n     raw: 07ff800000000100 ffff7fe00049d880 0000000300000003 ffff8000c001f000\n     raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000\n     page dumped because: kasan: bad access detected\n\n     Memory state around the buggy address:\n      ffff8000d7ca2200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n      ffff8000d7ca2280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n     \u003effff8000d7ca2300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n                           ^\n      ffff8000d7ca2380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n      ffff8000d7ca2400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb\n     ==================================================================\n\n[2]\n    Actually, it is allocated for struct tuner, and dvb_frontend is inside.","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":"media: xc2028: avoid use-after-free in load_firmware_cb()","id":"CVE-2024-43900","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":4,"next":{"headline":"drm/amd/display: Fix NULL pointer dereference for DTN log in DCN401","id":"CVE-2024-43901"},"packages":[],"prev":{"headline":"drm/amd/display: Fix null pointer deref in dcn20_resource.c","id":"CVE-2024-43899"},"products":["Linux"],"published":"2024-08-26","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":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel's xc2028 media driver allows attackers to cause a system crash or potentially execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2024-43900/"}