{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.176-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.94-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ixgbevf: fix use-after-free in VEPA multicast source pruning  ixgbevf_clean_rx_irq() prunes frames whose source MAC matches the VF's own address (VEPA multicast workaround) by freeing the skb and continuing to the next descriptor:      dev_kfree_skb_irq(skb);     continue;  The skb pointer is declared outside the while loop and persists across iterations.  Because the continue skips the \"skb = NULL\" reset at the bottom of the loop, the next iteration enters the \"else if (skb)\" path and calls ixgbevf_add_rx_frag() on the freed skb, dereferencing skb_shinfo(skb)-\u003enr_frags - a use-after-free in NAPI softirq context.  The sibling driver iavf already handles this correctly by nulling the pointer before continuing.  Apply the same pattern here.  I do not have ixgbevf hardware; the bug was found by static analysis (scan_drop_continue_loops.py + semgrep drop_continue_in_loop, multi-tool corroboration with the highest score in the scan).  The UAF was confirmed under KASAN by loading a test module that reproduces the exact code pattern (alloc skb, kfree_skb, then read skb_shinfo(skb)-\u003enr_frags):    BUG: KASAN: slab-use-after-free in ixgbevf_uaf_test_init+0x100/0x1000   Read of size 8 at addr 000000006163ae78 by task insmod/30   freed 208-byte region [000000006163adc0, 000000006163ae90)  QEMU emulates igb (82576) but not ixgbe (82599), and the igbvf VF driver does not include the VEPA source pruning path, so a full end-to-end reproduction with emulated hardware was not possible.",
  "id": "DEBIAN-CVE-2026-64113",
  "modified": "2026-09-14T16:47:33.051594491Z",
  "published": "2026-07-19T16:17:52.680Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64113"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-64113"
  ]
}