{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.170-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.85-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  net/sched: ets: fix divide by zero in the offload path  Offloading ETS requires computing each class' WRR weight: this is done by averaging over the sums of quanta as 'q_sum' and 'q_psum'. Using unsigned int, the same integer size as the individual DRR quanta, can overflow and even cause division by zero, like it happened in the following splat:   Oops: divide error: 0000 [#1] SMP PTI  CPU: 13 UID: 0 PID: 487 Comm: tc Tainted: G            E       6.19.0-virtme #45 PREEMPT(full)  Tainted: [E]=UNSIGNED_MODULE  Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011  RIP: 0010:ets_offload_change+0x11f/0x290 [sch_ets]  Code: e4 45 31 ff eb 03 41 89 c7 41 89 cb 89 ce 83 f9 0f 0f 87 b7 00 00 00 45 8b 08 31 c0 45 01 cc 45 85 c9 74 09 41 6b c4 64 31 d2 \u003c41\u003e f7 f2 89 c2 44 29 fa 45 89 df 41 83 fb 0f 0f 87 c7 00 00 00 44  RSP: 0018:ffffd0a180d77588 EFLAGS: 00010246  RAX: 00000000ffffff38 RBX: ffff8d3d482ca000 RCX: 0000000000000000  RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffd0a180d77660  RBP: ffffd0a180d77690 R08: ffff8d3d482ca2d8 R09: 00000000fffffffe  R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffffe  R13: ffff8d3d472f2000 R14: 0000000000000003 R15: 0000000000000000  FS:  00007f440b6c2740(0000) GS:ffff8d3dc9803000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 000000003cdd2000 CR3: 0000000007b58002 CR4: 0000000000172ef0  Call Trace:   \u003cTASK\u003e   ets_qdisc_change+0x870/0xf40 [sch_ets]   qdisc_create+0x12b/0x540   tc_modify_qdisc+0x6d7/0xbd0   rtnetlink_rcv_msg+0x168/0x6b0   netlink_rcv_skb+0x5c/0x110   netlink_unicast+0x1d6/0x2b0   netlink_sendmsg+0x22e/0x470   ____sys_sendmsg+0x38a/0x3c0   ___sys_sendmsg+0x99/0xe0   __sys_sendmsg+0x8a/0xf0   do_syscall_64+0x111/0xf80   entry_SYSCALL_64_after_hwframe+0x77/0x7f  RIP: 0033:0x7f440b81c77e  Code: 4d 89 d8 e8 d4 bc 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 \u003cc9\u003e c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa  RSP: 002b:00007fff951e4c10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e  RAX: ffffffffffffffda RBX: 0000000000481820 RCX: 00007f440b81c77e  RDX: 0000000000000000 RSI: 00007fff951e4cd0 RDI: 0000000000000003  RBP: 00007fff951e4c20 R08: 0000000000000000 R09: 0000000000000000  R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff951f4fa8  R13: 00000000699ddede R14: 00007f440bb01000 R15: 0000000000486980   \u003c/TASK\u003e  Modules linked in: sch_ets(E) netdevsim(E)  ---[ end trace 0000000000000000 ]---  RIP: 0010:ets_offload_change+0x11f/0x290 [sch_ets]  Code: e4 45 31 ff eb 03 41 89 c7 41 89 cb 89 ce 83 f9 0f 0f 87 b7 00 00 00 45 8b 08 31 c0 45 01 cc 45 85 c9 74 09 41 6b c4 64 31 d2 \u003c41\u003e f7 f2 89 c2 44 29 fa 45 89 df 41 83 fb 0f 0f 87 c7 00 00 00 44  RSP: 0018:ffffd0a180d77588 EFLAGS: 00010246  RAX: 00000000ffffff38 RBX: ffff8d3d482ca000 RCX: 0000000000000000  RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffd0a180d77660  RBP: ffffd0a180d77690 R08: ffff8d3d482ca2d8 R09: 00000000fffffffe  R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffffe  R13: ffff8d3d472f2000 R14: 0000000000000003 R15: 0000000000000000  FS:  00007f440b6c2740(0000) GS:ffff8d3dc9803000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 000000003cdd2000 CR3: 0000000007b58002 CR4: 0000000000172ef0  Kernel panic - not syncing: Fatal exception  Kernel Offset: 0x30000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)  ---[ end Kernel panic - not syncing: Fatal exception ]---  Fix this using 64-bit integers for 'q_sum' and 'q_psum'.",
  "id": "DEBIAN-CVE-2026-23379",
  "modified": "2026-09-14T16:47:42.748784347Z",
  "published": "2026-03-25T11:16:37.827Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-23379"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-23379"
  ]
}