{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-71091 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-71091 is a high-severity use after free vulnerability in Linux kernel, published on 13 Jan 2026. 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-2025-71091 and fix it if it is affected.\n\nWhat it is: CVE-2025-71091 is a high-severity use after free vulnerability in Linux kernel, published on 13 Jan 2026. 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-2025-71091 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-2025-71091/ (Markdown: https://insights.sbomify.com/CVE-2025-71091/index.md)","id":"CVE-2025-71091","markdown":"https://insights.sbomify.com/CVE-2025-71091/index.md","name":"CVE-2025-71091","record":{"aliases":["BELL-CVE-2025-71091","DEBIAN-CVE-2025-71091","GHSA-34rx-7455-xg2h","ROOT-OS-DEBIAN-11-CVE-2025-71091","ROOT-OS-DEBIAN-12-CVE-2025-71091","ROOT-OS-DEBIAN-13-CVE-2025-71091","ROOT-OS-UBUNTU-2204-CVE-2025-71091","ROOT-OS-UBUNTU-2404-CVE-2025-71091","UBUNTU-CVE-2025-71091"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel team driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel team driver allows local attackers to cause a system crash via list corruption.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nteam: fix check for port enabled in team_queue_override_port_prio_changed()\n\nThere has been a syzkaller bug reported recently with the following\ntrace:\n\nlist_del corruption, ffff888058bea080-\u003eprev is LIST_POISON2 (dead000000000122)\n------------[ cut here ]------------\nkernel BUG at lib/list_debug.c:59!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nCPU: 3 UID: 0 PID: 21246 Comm: syz.0.2928 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\nRIP: 0010:__list_del_entry_valid_or_report+0x13e/0x200 lib/list_debug.c:59\nCode: 48 c7 c7 e0 71 f0 8b e8 30 08 ef fc 90 0f 0b 48 89 ef e8 a5 02 55 fd 48 89 ea 48 89 de 48 c7 c7 40 72 f0 8b e8 13 08 ef fc 90 \u003c0f\u003e 0b 48 89 ef e8 88 02 55 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff\nRSP: 0018:ffffc9000d49f370 EFLAGS: 00010286\nRAX: 000000000000004e RBX: ffff888058bea080 RCX: ffffc9002817d000\nRDX: 0000000000000000 RSI: ffffffff819becc6 RDI: 0000000000000005\nRBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000\nR10: 0000000080000000 R11: 0000000000000001 R12: ffff888039e9c230\nR13: ffff888058bea088 R14: ffff888058bea080 R15: ffff888055461480\nFS:  00007fbbcfe6f6c0(0000) GS:ffff8880d6d0a000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000110c3afcb0 CR3: 00000000382c7000 CR4: 0000000000352ef0\nCall Trace:\n \u003cTASK\u003e\n __list_del_entry_valid include/linux/list.h:132 [inline]\n __list_del_entry include/linux/list.h:223 [inline]\n list_del_rcu include/linux/rculist.h:178 [inline]\n __team_queue_override_port_del drivers/net/team/team_core.c:826 [inline]\n __team_queue_override_port_del drivers/net/team/team_core.c:821 [inline]\n team_queue_override_port_prio_changed drivers/net/team/team_core.c:883 [inline]\n team_priority_option_set+0x171/0x2f0 drivers/net/team/team_core.c:1534\n team_option_set drivers/net/team/team_core.c:376 [inline]\n team_nl_options_set_doit+0x8ae/0xe60 drivers/net/team/team_core.c:2653\n genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115\n genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]\n genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210\n netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219\n netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]\n netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346\n netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896\n sock_sendmsg_nosec net/socket.c:727 [inline]\n __sock_sendmsg net/socket.c:742 [inline]\n ____sys_sendmsg+0xa98/0xc70 net/socket.c:2630\n ___sys_sendmsg+0x134/0x1d0 net/socket.c:2684\n __sys_sendmsg+0x16d/0x220 net/socket.c:2716\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe problem is in this flow:\n1) Port is enabled, queue_id != 0, in qom_list\n2) Port gets disabled\n        -\u003e team_port_disable()\n        -\u003e team_queue_override_port_del()\n        -\u003e del (removed from list)\n3) Port is disabled, queue_id != 0, not in any list\n4) Priority changes\n        -\u003e team_queue_override_port_prio_changed()\n        -\u003e checks: port disabled \u0026\u0026 queue_id != 0\n        -\u003e calls del - hits the BUG as it is removed already\n\nTo fix this, change the check in team_queue_override_port_prio_changed()\nso it returns early if port is not enabled.","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":"team: fix check for port enabled in team_queue_override_port_prio_changed()","id":"CVE-2025-71091","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":7,"next":{"headline":"RDMA/bnxt_re: Fix OOB write in bnxt_re_copy_err_stats()","id":"CVE-2025-71092"},"packages":[],"prev":{"headline":"nfsd: fix nfsd_file reference leak in nfsd4_add_rdaccess_to_wrdeleg()","id":"CVE-2025-71090"},"products":["Linux"],"published":"2026-01-13","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":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel team driver allows local attackers to cause a system crash via list corruption.","url":"https://insights.sbomify.com/CVE-2025-71091/"}