CVE-2025-71091 (GCVE-0-2025-71091)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:34 – Updated: 2026-01-13 15:34
VLAI?
Title
team: fix check for port enabled in team_queue_override_port_prio_changed()
Summary
In the Linux kernel, the following vulnerability has been resolved: team: fix check for port enabled in team_queue_override_port_prio_changed() There has been a syzkaller bug reported recently with the following trace: list_del corruption, ffff888058bea080->prev is LIST_POISON2 (dead000000000122) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:59! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 21246 Comm: syz.0.2928 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__list_del_entry_valid_or_report+0x13e/0x200 lib/list_debug.c:59 Code: 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 <0f> 0b 48 89 ef e8 88 02 55 fd 48 89 ea 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffffc9000d49f370 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff888058bea080 RCX: ffffc9002817d000 RDX: 0000000000000000 RSI: ffffffff819becc6 RDI: 0000000000000005 RBP: dead000000000122 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff888039e9c230 R13: ffff888058bea088 R14: ffff888058bea080 R15: ffff888055461480 FS: 00007fbbcfe6f6c0(0000) GS:ffff8880d6d0a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c3afcb0 CR3: 00000000382c7000 CR4: 0000000000352ef0 Call Trace: <TASK> __list_del_entry_valid include/linux/list.h:132 [inline] __list_del_entry include/linux/list.h:223 [inline] list_del_rcu include/linux/rculist.h:178 [inline] __team_queue_override_port_del drivers/net/team/team_core.c:826 [inline] __team_queue_override_port_del drivers/net/team/team_core.c:821 [inline] team_queue_override_port_prio_changed drivers/net/team/team_core.c:883 [inline] team_priority_option_set+0x171/0x2f0 drivers/net/team/team_core.c:1534 team_option_set drivers/net/team/team_core.c:376 [inline] team_nl_options_set_doit+0x8ae/0xe60 drivers/net/team/team_core.c:2653 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xa98/0xc70 net/socket.c:2630 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2684 __sys_sendmsg+0x16d/0x220 net/socket.c:2716 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f The problem is in this flow: 1) Port is enabled, queue_id != 0, in qom_list 2) Port gets disabled -> team_port_disable() -> team_queue_override_port_del() -> del (removed from list) 3) Port is disabled, queue_id != 0, not in any list 4) Priority changes -> team_queue_override_port_prio_changed() -> checks: port disabled && queue_id != 0 -> calls del - hits the BUG as it is removed already To fix this, change the check in team_queue_override_port_prio_changed() so it returns early if port is not enabled.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6c31ff366c1116823e77019bae3e92e9d77a49f4 , < 53a727a8bfd78c739e130a781192d0f6f8e03d39 (git)
Affected: 6c31ff366c1116823e77019bae3e92e9d77a49f4 , < 6bfb62b6010a16112dcae52f490e5e0e6abe12a3 (git)
Affected: 6c31ff366c1116823e77019bae3e92e9d77a49f4 , < 107d245f84cb4f55f597d31eda34b42a2b7d6952 (git)
Affected: 6c31ff366c1116823e77019bae3e92e9d77a49f4 , < b71187648ef2349254673d0523fdf96d1fe3d758 (git)
Affected: 6c31ff366c1116823e77019bae3e92e9d77a49f4 , < 932ac51d9953eaf77a1252f79b656d4ca86163c6 (git)
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    Linux Linux Affected: 3.11
Unaffected: 0 , < 3.11 (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.4 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc4 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/team/team_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6c31ff366c1116823e77019bae3e92e9d77a49f4",
              "versionType": "git"
            },
            {
              "lessThan": "6bfb62b6010a16112dcae52f490e5e0e6abe12a3",
              "status": "affected",
              "version": "6c31ff366c1116823e77019bae3e92e9d77a49f4",
              "versionType": "git"
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            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/team/team_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.11"
            },
            {
              "lessThan": "3.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.4",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.19-rc4",
                  "versionStartIncluding": "3.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T15:34:52.431Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/53a727a8bfd78c739e130a781192d0f6f8e03d39"
        },
        {
          "url": "https://git.kernel.org/stable/c/6bfb62b6010a16112dcae52f490e5e0e6abe12a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/107d245f84cb4f55f597d31eda34b42a2b7d6952"
        },
        {
          "url": "https://git.kernel.org/stable/c/b71187648ef2349254673d0523fdf96d1fe3d758"
        },
        {
          "url": "https://git.kernel.org/stable/c/932ac51d9953eaf77a1252f79b656d4ca86163c6"
        }
      ],
      "title": "team: fix check for port enabled in team_queue_override_port_prio_changed()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71091",
    "datePublished": "2026-01-13T15:34:52.431Z",
    "dateReserved": "2026-01-13T15:30:19.649Z",
    "dateUpdated": "2026-01-13T15:34:52.431Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-71091\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-01-13T16:16:08.810\",\"lastModified\":\"2026-01-13T16:16:08.810\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/107d245f84cb4f55f597d31eda34b42a2b7d6952\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/53a727a8bfd78c739e130a781192d0f6f8e03d39\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6bfb62b6010a16112dcae52f490e5e0e6abe12a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/932ac51d9953eaf77a1252f79b656d4ca86163c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b71187648ef2349254673d0523fdf96d1fe3d758\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.