{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-48719 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-48719 is a medium-severity vulnerability in Linux kernel, published on 20 Jun 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-2022-48719 and fix it if it is affected.\n\nWhat it is: CVE-2022-48719 is a medium-severity vulnerability in Linux kernel, published on 20 Jun 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-2022-48719 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-2022-48719/ (Markdown: https://insights.sbomify.com/CVE-2022-48719/index.md)","id":"CVE-2022-48719","markdown":"https://insights.sbomify.com/CVE-2022-48719/index.md","name":"CVE-2022-48719","record":{"aliases":["DEBIAN-CVE-2022-48719","GHSA-6j4r-jvg8-v6gc","UBUNTU-CVE-2022-48719"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"A deadlock in the Linux kernel network neighbor subsystem allows local attackers to cause a denial of service.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-667","name":"Improper Locking"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work\n\nsyzkaller was able to trigger a deadlock for NTF_MANAGED entries [0]:\n\n  kworker/0:16/14617 is trying to acquire lock:\n  ffffffff8d4dd370 (\u0026tbl-\u003elock){++-.}-{2:2}, at: ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652\n  [...]\n  but task is already holding lock:\n  ffffffff8d4dd370 (\u0026tbl-\u003elock){++-.}-{2:2}, at: neigh_managed_work+0x35/0x250 net/core/neighbour.c:1572\n\nThe neighbor entry turned to NUD_FAILED state, where __neigh_event_send()\ntriggered an immediate probe as per commit cd28ca0a3dd1 (\"neigh: reduce\narp latency\") via neigh_probe() given table lock was held.\n\nOne option to fix this situation is to defer the neigh_probe() back to\nthe neigh_timer_handler() similarly as pre cd28ca0a3dd1. For the case\nof NTF_MANAGED, this deferral is acceptable given this only happens on\nactual failure state and regular / expected state is NUD_VALID with the\nentry already present.\n\nThe fix adds a parameter to __neigh_event_send() in order to communicate\nwhether immediate probe is allowed or disallowed. Existing call-sites\nof neigh_event_send() default as-is to immediate probe. However, the\nneigh_managed_work() disables it via use of neigh_event_send_probe().\n\n[0] \u003cTASK\u003e\n  __dump_stack lib/dump_stack.c:88 [inline]\n  dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n  print_deadlock_bug kernel/locking/lockdep.c:2956 [inline]\n  check_deadlock kernel/locking/lockdep.c:2999 [inline]\n  validate_chain kernel/locking/lockdep.c:3788 [inline]\n  __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027\n  lock_acquire kernel/locking/lockdep.c:5639 [inline]\n  lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604\n  __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline]\n  _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:334\n  ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652\n  ip6_finish_output2+0x1070/0x14f0 net/ipv6/ip6_output.c:123\n  __ip6_finish_output net/ipv6/ip6_output.c:191 [inline]\n  __ip6_finish_output+0x61e/0xe90 net/ipv6/ip6_output.c:170\n  ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:201\n  NF_HOOK_COND include/linux/netfilter.h:296 [inline]\n  ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224\n  dst_output include/net/dst.h:451 [inline]\n  NF_HOOK include/linux/netfilter.h:307 [inline]\n  ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508\n  ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650\n  ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c:742\n  neigh_probe+0xc2/0x110 net/core/neighbour.c:1040\n  __neigh_event_send+0x37d/0x1570 net/core/neighbour.c:1201\n  neigh_event_send include/net/neighbour.h:470 [inline]\n  neigh_managed_work+0x162/0x250 net/core/neighbour.c:1574\n  process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307\n  worker_thread+0x657/0x1110 kernel/workqueue.c:2454\n  kthread+0x2e9/0x3a0 kernel/kthread.c:377\n  ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\n  \u003c/TASK\u003e","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, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work","id":"CVE-2022-48719","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2022"},"n_packages":0,"n_references":2,"next":{"headline":"net: macsec: Fix offload support for NETDEV_UNREGISTER event","id":"CVE-2022-48720"},"packages":[],"prev":{"headline":"drm: mxsfb: Fix NULL pointer dereference","id":"CVE-2022-48718"},"products":["Linux"],"published":"2024-06-20","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 deadlock in the Linux kernel network neighbor subsystem allows local attackers to cause a denial of service.","url":"https://insights.sbomify.com/CVE-2022-48719/"}