{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-44934 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-44934 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-2024-44934 and fix it if it is affected.\n\nWhat it is: CVE-2024-44934 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-2024-44934 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-2024-44934/ (Markdown: https://insights.sbomify.com/CVE-2024-44934/index.md)","id":"CVE-2024-44934","markdown":"https://insights.sbomify.com/CVE-2024-44934/index.md","name":"CVE-2024-44934","record":{"aliases":["AZL-48288","BELL-CVE-2024-44934","DEBIAN-CVE-2024-44934","GHSA-3pph-x43c-2v7f","ROOT-OS-DEBIAN-11-CVE-2024-44934","UBUNTU-CVE-2024-44934"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel bridge","requires_auth":"low_privilege","summary":"A use-after-free in the Linux kernel bridge multicast code allows attackers to cause denial of service or potentially execute 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":"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\nnet: bridge: mcast: wait for previous gc cycles when removing port\n\nsyzbot hit a use-after-free[1] which is caused because the bridge doesn't\nmake sure that all previous garbage has been collected when removing a\nport. What happens is:\n      CPU 1                   CPU 2\n start gc cycle           remove port\n                         acquire gc lock first\n wait for lock\n                         call br_multicasg_gc() directly\n acquire lock now but    free port\n the port can be freed\n while grp timers still\n running\n\nMake sure all previous gc cycles have finished by using flush_work before\nfreeing the port.\n\n[1]\n  BUG: KASAN: slab-use-after-free in br_multicast_port_group_expired+0x4c0/0x550 net/bridge/br_multicast.c:861\n  Read of size 8 at addr ffff888071d6d000 by task syz.5.1232/9699\n\n  CPU: 1 PID: 9699 Comm: syz.5.1232 Not tainted 6.10.0-rc5-syzkaller-00021-g24ca36a562d6 #0\n  Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024\n  Call Trace:\n   \u003cIRQ\u003e\n   __dump_stack lib/dump_stack.c:88 [inline]\n   dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114\n   print_address_description mm/kasan/report.c:377 [inline]\n   print_report+0xc3/0x620 mm/kasan/report.c:488\n   kasan_report+0xd9/0x110 mm/kasan/report.c:601\n   br_multicast_port_group_expired+0x4c0/0x550 net/bridge/br_multicast.c:861\n   call_timer_fn+0x1a3/0x610 kernel/time/timer.c:1792\n   expire_timers kernel/time/timer.c:1843 [inline]\n   __run_timers+0x74b/0xaf0 kernel/time/timer.c:2417\n   __run_timer_base kernel/time/timer.c:2428 [inline]\n   __run_timer_base kernel/time/timer.c:2421 [inline]\n   run_timer_base+0x111/0x190 kernel/time/timer.c:2437","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":"net: bridge: mcast: wait for previous gc cycles when removing port","id":"CVE-2024-44934","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":5,"next":{"headline":"sctp: Fix null-ptr-deref in reuseport_add_sock().","id":"CVE-2024-44935"},"packages":[],"prev":{"headline":"bnxt_en : Fix memory out-of-bounds in bnxt_fill_hw_rss_tbl()","id":"CVE-2024-44933"},"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":"2026-08-05","vendors":["Linux"]},"summary":"A use-after-free in the Linux kernel bridge multicast code allows attackers to cause denial of service or potentially execute code.","url":"https://insights.sbomify.com/CVE-2024-44934/"}