{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-47684 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-47684 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-47684 and fix it if it is affected.\n\nWhat it is: CVE-2024-47684 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 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-2024-47684 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-2024-47684/ (Markdown: https://insights.sbomify.com/CVE-2024-47684/index.md)","id":"CVE-2024-47684","markdown":"https://insights.sbomify.com/CVE-2024-47684/index.md","name":"CVE-2024-47684","record":{"aliases":["AZL-50659","AZL-50694","BELL-CVE-2024-47684","DEBIAN-CVE-2024-47684","GHSA-9pmf-47vc-x2x8","UBUNTU-CVE-2024-47684"],"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 null pointer dereference in the Linux kernel TCP stack can cause a system crash, leading to denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"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-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: check skb is non-NULL in tcp_rto_delta_us()\n\nWe have some machines running stock Ubuntu 20.04.6 which is their 5.4.0-174-generic\nkernel that are running ceph and recently hit a null ptr dereference in\ntcp_rearm_rto(). Initially hitting it from the TLP path, but then later we also\nsaw it getting hit from the RACK case as well. Here are examples of the oops\nmessages we saw in each of those cases:\n\nJul 26 15:05:02 rx [11061395.780353] BUG: kernel NULL pointer dereference, address: 0000000000000020\nJul 26 15:05:02 rx [11061395.787572] #PF: supervisor read access in kernel mode\nJul 26 15:05:02 rx [11061395.792971] #PF: error_code(0x0000) - not-present page\nJul 26 15:05:02 rx [11061395.798362] PGD 0 P4D 0\nJul 26 15:05:02 rx [11061395.801164] Oops: 0000 [#1] SMP NOPTI\nJul 26 15:05:02 rx [11061395.805091] CPU: 0 PID: 9180 Comm: msgr-worker-1 Tainted: G W 5.4.0-174-generic #193-Ubuntu\nJul 26 15:05:02 rx [11061395.814996] Hardware name: Supermicro SMC 2x26 os-gen8 64C NVME-Y 256G/H12SSW-NTR, BIOS 2.5.V1.2U.NVMe.UEFI 05/09/2023\nJul 26 15:05:02 rx [11061395.825952] RIP: 0010:tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.830656] Code: 87 ca 04 00 00 00 5b 41 5c 41 5d 5d c3 c3 49 8b bc 24 40 06 00 00 eb 8d 48 bb cf f7 53 e3 a5 9b c4 20 4c 89 ef e8 0c fe 0e 00 \u003c48\u003e 8b 78 20 48 c1 ef 03 48 89 f8 41 8b bc 24 80 04 00 00 48 f7 e3\nJul 26 15:05:02 rx [11061395.849665] RSP: 0018:ffffb75d40003e08 EFLAGS: 00010246\nJul 26 15:05:02 rx [11061395.855149] RAX: 0000000000000000 RBX: 20c49ba5e353f7cf RCX: 0000000000000000\nJul 26 15:05:02 rx [11061395.862542] RDX: 0000000062177c30 RSI: 000000000000231c RDI: ffff9874ad283a60\nJul 26 15:05:02 rx [11061395.869933] RBP: ffffb75d40003e20 R08: 0000000000000000 R09: ffff987605e20aa8\nJul 26 15:05:02 rx [11061395.877318] R10: ffffb75d40003f00 R11: ffffb75d4460f740 R12: ffff9874ad283900\nJul 26 15:05:02 rx [11061395.884710] R13: ffff9874ad283a60 R14: ffff9874ad283980 R15: ffff9874ad283d30\nJul 26 15:05:02 rx [11061395.892095] FS: 00007f1ef4a2e700(0000) GS:ffff987605e00000(0000) knlGS:0000000000000000\nJul 26 15:05:02 rx [11061395.900438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nJul 26 15:05:02 rx [11061395.906435] CR2: 0000000000000020 CR3: 0000003e450ba003 CR4: 0000000000760ef0\nJul 26 15:05:02 rx [11061395.913822] PKRU: 55555554\nJul 26 15:05:02 rx [11061395.916786] Call Trace:\nJul 26 15:05:02 rx [11061395.919488]\nJul 26 15:05:02 rx [11061395.921765] ? show_regs.cold+0x1a/0x1f\nJul 26 15:05:02 rx [11061395.925859] ? __die+0x90/0xd9\nJul 26 15:05:02 rx [11061395.929169] ? no_context+0x196/0x380\nJul 26 15:05:02 rx [11061395.933088] ? ip6_protocol_deliver_rcu+0x4e0/0x4e0\nJul 26 15:05:02 rx [11061395.938216] ? ip6_sublist_rcv_finish+0x3d/0x50\nJul 26 15:05:02 rx [11061395.943000] ? __bad_area_nosemaphore+0x50/0x1a0\nJul 26 15:05:02 rx [11061395.947873] ? bad_area_nosemaphore+0x16/0x20\nJul 26 15:05:02 rx [11061395.952486] ? do_user_addr_fault+0x267/0x450\nJul 26 15:05:02 rx [11061395.957104] ? ipv6_list_rcv+0x112/0x140\nJul 26 15:05:02 rx [11061395.961279] ? __do_page_fault+0x58/0x90\nJul 26 15:05:02 rx [11061395.965458] ? do_page_fault+0x2c/0xe0\nJul 26 15:05:02 rx [11061395.969465] ? page_fault+0x34/0x40\nJul 26 15:05:02 rx [11061395.973217] ? tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.977313] ? tcp_rearm_rto+0xe4/0x160\nJul 26 15:05:02 rx [11061395.981408] tcp_send_loss_probe+0x10b/0x220\nJul 26 15:05:02 rx [11061395.985937] tcp_write_timer_handler+0x1b4/0x240\nJul 26 15:05:02 rx [11061395.990809] tcp_write_timer+0x9e/0xe0\nJul 26 15:05:02 rx [11061395.994814] ? tcp_write_timer_handler+0x240/0x240\nJul 26 15:05:02 rx [11061395.999866] call_timer_fn+0x32/0x130\nJul 26 15:05:02 rx [11061396.003782] __run_timers.part.0+0x180/0x280\nJul 26 15:05:02 rx [11061396.008309] ? recalibrate_cpu_khz+0x10/0x10\nJul 26 15:05:02 rx [11061396.012841] ? native_x2apic_icr_write+0x30/0x30\nJul 26 15:05:02 rx [11061396.017718] ? lapic_next_even\n---truncated---","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":"tcp: check skb is non-NULL in tcp_rto_delta_us()","id":"CVE-2024-47684","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2024"},"n_packages":0,"n_references":9,"next":{"headline":"netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()","id":"CVE-2024-47685"},"packages":[],"prev":{"headline":"drm/amd/display: Skip Recompute DSC Params if no Stream on Link","id":"CVE-2024-47683"},"products":["Linux"],"published":"2024-10-21","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":"2026-10-15","vendors":["Linux"]},"summary":"A null pointer dereference in the Linux kernel TCP stack can cause a system crash, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2024-47684/"}