FKIE_CVE-2026-23453

Vulnerability from fkie_nvd - Published: 2026-04-03 16:16 - Updated: 2026-05-26 14:50
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode Page recycling was removed from the XDP_DROP path in emac_run_xdp() to avoid conflicts with AF_XDP zero-copy mode, which uses xsk_buff_free() instead. However, this causes a memory leak when running XDP programs that drop packets in non-zero-copy mode (standard page pool mode). The pages are never returned to the page pool, leading to OOM conditions. Fix this by handling cleanup in the caller, emac_rx_packet(). When emac_run_xdp() returns ICSSG_XDP_CONSUMED for XDP_DROP, the caller now recycles the page back to the page pool. The zero-copy path, emac_rx_packet_zc() already handles cleanup correctly with xsk_buff_free().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/719d3e71691db7c4f1658ba5a6d1472928121594Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d16d57dedcb69c1a1257e0638f8698ce1f0ccbe5Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
linux linux_kernel 7.0
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ti: icssg-prueth: Fix memory leak in XDP_DROP for non-zero-copy mode\n\nPage recycling was removed from the XDP_DROP path in emac_run_xdp() to\navoid conflicts with AF_XDP zero-copy mode, which uses xsk_buff_free()\ninstead.\n\nHowever, this causes a memory leak when running XDP programs that drop\npackets in non-zero-copy mode (standard page pool mode). The pages are\nnever returned to the page pool, leading to OOM conditions.\n\nFix this by handling cleanup in the caller, emac_rx_packet().\nWhen emac_run_xdp() returns ICSSG_XDP_CONSUMED for XDP_DROP, the\ncaller now recycles the page back to the page pool. The zero-copy\npath, emac_rx_packet_zc() already handles cleanup correctly with\nxsk_buff_free()."
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  "id": "CVE-2026-23453",
  "lastModified": "2026-05-26T14:50:24.220",
  "metrics": {
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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