{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b0b0f52042acb324cd39fbefb2b1ae83af8f8ae1"
            },
            {
              "fixed": "83df3e2594cd78aa40b1246a19879abb4891945b"
            },
            {
              "fixed": "21f304c2aae46625e050c28d979f4b9d83faa85e"
            },
            {
              "fixed": "62b68b774f06bf52e329f254f0199bc43d350ccf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.15.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72393.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: don't cache shinfo across skb realloc\n\nfbnic_tx_lso() calls skb_cow_head() which may reallocate the skb\nincluding the shared info. We can't use the pointer calculated\nbefore the call.\n\n    BUG: KASAN: slab-use-after-free in fbnic_tx_lso.isra.0+0x668/0x8e0\n    Read of size 4 at addr ff110000262edd98 by task swapper/5/0\n    Call Trace:\n     fbnic_tx_lso.isra.0+0x668/0x8e0\n     fbnic_xmit_frame+0x622/0xba0\n     dev_hard_start_xmit+0xf4/0x620\n\n    Allocated by task 8653:\n     __alloc_skb+0x11e/0x5f0\n     alloc_skb_with_frags+0xcc/0x6c0\n     sock_alloc_send_pskb+0x327/0x3f0\n     __ip_append_data+0x188b/0x47a0\n     ip_make_skb+0x24a/0x300\n     udp_sendmsg+0x14d2/0x21e0\n\n    Freed by task 0:\n     kfree+0x123/0x5a0\n     pskb_expand_head+0x36c/0xfa0\n     fbnic_tx_lso.isra.0+0x500/0x8e0\n     fbnic_xmit_frame+0x622/0xba0\n     dev_hard_start_xmit+0xf4/0x620\n     sch_direct_xmit+0x25b/0x1100\n\n    The buggy address belongs to the object at ff110000262edc40\n     which belongs to the cache skbuff_small_head of size 640\n    The buggy address is located 344 bytes inside of\n     freed 640-byte region [ff110000262edc40, ff110000262ede",
  "id": "CVE-2026-72393",
  "modified": "2026-08-16T03:30:53.424106688Z",
  "published": "2026-08-15T05:56:21.081Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/21f304c2aae46625e050c28d979f4b9d83faa85e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/62b68b774f06bf52e329f254f0199bc43d350ccf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/83df3e2594cd78aa40b1246a19879abb4891945b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72393.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72393"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "eth: fbnic: don't cache shinfo across skb realloc"
}