{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-50253 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2022-50253 is a medium-severity vulnerability in Linux kernel, published on 15 Sep 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-2022-50253 and fix it if it is affected.\n\nWhat it is: CVE-2022-50253 is a medium-severity vulnerability in Linux kernel, published on 15 Sep 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-2022-50253 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-2022-50253/ (Markdown: https://insights.sbomify.com/CVE-2022-50253/index.md)","id":"CVE-2022-50253","markdown":"https://insights.sbomify.com/CVE-2022-50253/index.md","name":"CVE-2022-50253","record":{"aliases":["DEBIAN-CVE-2022-50253","GHSA-mmcv-ff9h-q89c","UBUNTU-CVE-2022-50253"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel BPF","requires_auth":"low_privilege","summary":"A missing length check in the Linux kernel BPF subsystem allows a local attacker to trigger a kernel warning or crash via a crafted BPF program.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: make sure skb-\u003elen != 0 when redirecting to a tunneling device\n\nsyzkaller managed to trigger another case where skb-\u003elen == 0\nwhen we enter __dev_queue_xmit:\n\nWARNING: CPU: 0 PID: 2470 at include/linux/skbuff.h:2576 skb_assert_len include/linux/skbuff.h:2576 [inline]\nWARNING: CPU: 0 PID: 2470 at include/linux/skbuff.h:2576 __dev_queue_xmit+0x2069/0x35e0 net/core/dev.c:4295\n\nCall Trace:\n dev_queue_xmit+0x17/0x20 net/core/dev.c:4406\n __bpf_tx_skb net/core/filter.c:2115 [inline]\n __bpf_redirect_no_mac net/core/filter.c:2140 [inline]\n __bpf_redirect+0x5fb/0xda0 net/core/filter.c:2163\n ____bpf_clone_redirect net/core/filter.c:2447 [inline]\n bpf_clone_redirect+0x247/0x390 net/core/filter.c:2419\n bpf_prog_48159a89cb4a9a16+0x59/0x5e\n bpf_dispatcher_nop_func include/linux/bpf.h:897 [inline]\n __bpf_prog_run include/linux/filter.h:596 [inline]\n bpf_prog_run include/linux/filter.h:603 [inline]\n bpf_test_run+0x46c/0x890 net/bpf/test_run.c:402\n bpf_prog_test_run_skb+0xbdc/0x14c0 net/bpf/test_run.c:1170\n bpf_prog_test_run+0x345/0x3c0 kernel/bpf/syscall.c:3648\n __sys_bpf+0x43a/0x6c0 kernel/bpf/syscall.c:5005\n __do_sys_bpf kernel/bpf/syscall.c:5091 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:5089 [inline]\n __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5089\n do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48\n entry_SYSCALL_64_after_hwframe+0x61/0xc6\n\nThe reproducer doesn't really reproduce outside of syzkaller\nenvironment, so I'm taking a guess here. It looks like we\ndo generate correct ETH_HLEN-sized packet, but we redirect\nthe packet to the tunneling device. Before we do so, we\n__skb_pull l2 header and arrive again at skb-\u003elen == 0.\nDoesn't seem like we can do anything better than having\nan explicit check after __skb_pull?","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":"bpf: make sure skb-\u003elen != 0 when redirecting to a tunneling device","id":"CVE-2022-50253","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"null_dereference","year":"2022"},"n_packages":0,"n_references":8,"next":{"headline":"media: ov8865: Fix an error handling path in ov8865_probe()","id":"CVE-2022-50254"},"packages":[],"prev":{"headline":"igb: Do not free q_vector unless new one was allocated","id":"CVE-2022-50252"},"products":["Linux"],"published":"2025-09-15","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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A missing length check in the Linux kernel BPF subsystem allows a local attacker to trigger a kernel warning or crash via a crafted BPF program.","url":"https://insights.sbomify.com/CVE-2022-50253/"}