{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2022-50655 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-50655 is a vulnerability in Linux, published on 9 Dec 2025. 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-2022-50655 and fix it if it is affected.\n\nWhat it is: CVE-2022-50655 is a vulnerability in Linux, published on 9 Dec 2025. 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-2022-50655 in the wild and no public exploit code.\n\nAffected product: Linux. 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-2022-50655/ (Markdown: https://insights.sbomify.com/CVE-2022-50655/index.md)","id":"CVE-2022-50655","markdown":"https://insights.sbomify.com/CVE-2022-50655/index.md","name":"CVE-2022-50655","record":{"aliases":["DEBIAN-CVE-2022-50655","GHSA-wcm6-h78p-r673","UBUNTU-CVE-2022-50655"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel PPP","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel warning and potential denial of service in the Linux PPP driver by sending crafted packets without proper device association.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nppp: associate skb with a device at tx\n\nSyzkaller triggered flow dissector warning with the following:\n\nr0 = openat$ppp(0xffffffffffffff9c, \u0026(0x7f0000000000), 0xc0802, 0x0)\nioctl$PPPIOCNEWUNIT(r0, 0xc004743e, \u0026(0x7f00000000c0))\nioctl$PPPIOCSACTIVE(r0, 0x40107446, \u0026(0x7f0000000240)={0x2, \u0026(0x7f0000000180)=[{0x20, 0x0, 0x0, 0xfffff034}, {0x6}]})\npwritev(r0, \u0026(0x7f0000000040)=[{\u0026(0x7f0000000140)='\\x00!', 0x2}], 0x1, 0x0, 0x0)\n\n[    9.485814] WARNING: CPU: 3 PID: 329 at net/core/flow_dissector.c:1016 __skb_flow_dissect+0x1ee0/0x1fa0\n[    9.485929]  skb_get_poff+0x53/0xa0\n[    9.485937]  bpf_skb_get_pay_offset+0xe/0x20\n[    9.485944]  ? ppp_send_frame+0xc2/0x5b0\n[    9.485949]  ? _raw_spin_unlock_irqrestore+0x40/0x60\n[    9.485958]  ? __ppp_xmit_process+0x7a/0xe0\n[    9.485968]  ? ppp_xmit_process+0x5b/0xb0\n[    9.485974]  ? ppp_write+0x12a/0x190\n[    9.485981]  ? do_iter_write+0x18e/0x2d0\n[    9.485987]  ? __import_iovec+0x30/0x130\n[    9.485997]  ? do_pwritev+0x1b6/0x240\n[    9.486016]  ? trace_hardirqs_on+0x47/0x50\n[    9.486023]  ? __x64_sys_pwritev+0x24/0x30\n[    9.486026]  ? do_syscall_64+0x3d/0x80\n[    9.486031]  ? entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nFlow dissector tries to find skb net namespace either via device\nor via socket. Neigher is set in ppp_send_frame, so let's manually\nuse ppp-\u003edev.","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":"ppp: associate skb with a device at tx","id":"CVE-2022-50655","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2022"},"n_packages":0,"n_references":6,"next":{"headline":"nfc: pn533: Clear nfc_target before being used","id":"CVE-2022-50656"},"packages":[],"prev":{"headline":"bpf: Fix panic due to wrong pageattr of im-\u003eimage","id":"CVE-2022-50654"},"products":["Linux"],"published":"2025-12-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel warning and potential denial of service in the Linux PPP driver by sending crafted packets without proper device association.","url":"https://insights.sbomify.com/CVE-2022-50655/"}