{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53109 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-53109 is a medium-severity vulnerability in Linux kernel, published on 2 May 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-2023-53109 and fix it if it is affected.\n\nWhat it is: CVE-2023-53109 is a medium-severity vulnerability in Linux kernel, published on 2 May 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-2023-53109 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-2023-53109/ (Markdown: https://insights.sbomify.com/CVE-2023-53109/index.md)","id":"CVE-2023-53109","markdown":"https://insights.sbomify.com/CVE-2023-53109/index.md","name":"CVE-2023-53109","record":{"aliases":["BELL-CVE-2023-53109","DEBIAN-CVE-2023-53109","GHSA-873c-438h-rqmq","UBUNTU-CVE-2023-53109"],"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 data race in Linux kernel IP tunnel transmission can lead to system instability or crashes due to unsynchronized access to device headroom fields.","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":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tunnels: annotate lockless accesses to dev-\u003eneeded_headroom\n\nIP tunnels can apparently update dev-\u003eneeded_headroom\nin their xmit path.\n\nThis patch takes care of three tunnels xmit, and also the\ncore LL_RESERVED_SPACE() and LL_RESERVED_SPACE_EXTRA()\nhelpers.\n\nMore changes might be needed for completeness.\n\nBUG: KCSAN: data-race in ip_tunnel_xmit / ip_tunnel_xmit\n\nread to 0xffff88815b9da0ec of 2 bytes by task 888 on cpu 1:\nip_tunnel_xmit+0x1270/0x1730 net/ipv4/ip_tunnel.c:803\n__gre_xmit net/ipv4/ip_gre.c:469 [inline]\nipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661\n__netdev_start_xmit include/linux/netdevice.h:4881 [inline]\nnetdev_start_xmit include/linux/netdevice.h:4895 [inline]\nxmit_one net/core/dev.c:3580 [inline]\ndev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596\n__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246\ndev_queue_xmit include/linux/netdevice.h:3051 [inline]\nneigh_direct_output+0x17/0x20 net/core/neighbour.c:1623\nneigh_output include/net/neighbour.h:546 [inline]\nip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228\nip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316\nNF_HOOK_COND include/linux/netfilter.h:291 [inline]\nip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430\ndst_output include/net/dst.h:444 [inline]\nip_local_out+0x64/0x80 net/ipv4/ip_output.c:126\niptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82\nip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813\n__gre_xmit net/ipv4/ip_gre.c:469 [inline]\nipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661\n__netdev_start_xmit include/linux/netdevice.h:4881 [inline]\nnetdev_start_xmit include/linux/netdevice.h:4895 [inline]\nxmit_one net/core/dev.c:3580 [inline]\ndev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596\n__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246\ndev_queue_xmit include/linux/netdevice.h:3051 [inline]\nneigh_direct_output+0x17/0x20 net/core/neighbour.c:1623\nneigh_output include/net/neighbour.h:546 [inline]\nip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228\nip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316\nNF_HOOK_COND include/linux/netfilter.h:291 [inline]\nip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430\ndst_output include/net/dst.h:444 [inline]\nip_local_out+0x64/0x80 net/ipv4/ip_output.c:126\niptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82\nip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813\n__gre_xmit net/ipv4/ip_gre.c:469 [inline]\nipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661\n__netdev_start_xmit include/linux/netdevice.h:4881 [inline]\nnetdev_start_xmit include/linux/netdevice.h:4895 [inline]\nxmit_one net/core/dev.c:3580 [inline]\ndev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596\n__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246\ndev_queue_xmit include/linux/netdevice.h:3051 [inline]\nneigh_direct_output+0x17/0x20 net/core/neighbour.c:1623\nneigh_output include/net/neighbour.h:546 [inline]\nip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228\nip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316\nNF_HOOK_COND include/linux/netfilter.h:291 [inline]\nip_output+0xe5/0x1b0 net/ipv4/ip_output.c:430\ndst_output include/net/dst.h:444 [inline]\nip_local_out+0x64/0x80 net/ipv4/ip_output.c:126\niptunnel_xmit+0x34a/0x4b0 net/ipv4/ip_tunnel_core.c:82\nip_tunnel_xmit+0x1451/0x1730 net/ipv4/ip_tunnel.c:813\n__gre_xmit net/ipv4/ip_gre.c:469 [inline]\nipgre_xmit+0x516/0x570 net/ipv4/ip_gre.c:661\n__netdev_start_xmit include/linux/netdevice.h:4881 [inline]\nnetdev_start_xmit include/linux/netdevice.h:4895 [inline]\nxmit_one net/core/dev.c:3580 [inline]\ndev_hard_start_xmit+0x127/0x400 net/core/dev.c:3596\n__dev_queue_xmit+0x1007/0x1eb0 net/core/dev.c:4246\ndev_queue_xmit include/linux/netdevice.h:3051 [inline]\nneigh_direct_output+0x17/0x20 net/core/neighbour.c:1623\nneigh_output include/net/neighbour.h:546 [inline]\nip_finish_output2+0x740/0x840 net/ipv4/ip_output.c:228\nip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:316\nNF_HOOK_COND include/linux/netfilter.h:291 [inline]\nip_output+0xe5/0x1b0 net/i\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":"net: tunnels: annotate lockless accesses to dev-\u003eneeded_headroom","id":"CVE-2023-53109","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"race_condition","year":"2023"},"n_packages":0,"n_references":8,"next":{"headline":"net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()","id":"CVE-2023-53110"},"packages":[],"prev":{"headline":"net/iucv: Fix size of interrupt data","id":"CVE-2023-53108"},"products":["Linux"],"published":"2025-05-02","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 data race in Linux kernel IP tunnel transmission can lead to system instability or crashes due to unsynchronized access to device headroom fields.","url":"https://insights.sbomify.com/CVE-2023-53109/"}