)]}'
{
  "commit": "6baf9cd9b87dc7ebfbc0bf533cef571e4fbcf31e",
  "tree": "6a81bcf595c71c7103c35965814036eb56491b95",
  "parents": [
    "7ead0fd4c30a3ac938a51edf82fd36b526ffa21b"
  ],
  "author": {
    "name": "Sabrina Dubroca",
    "email": "sd@queasysnail.net",
    "time": "Wed May 20 22:44:42 2026 +0200"
  },
  "committer": {
    "name": "Kevin Liu",
    "email": "zhihuil@google.com",
    "time": "Mon Jun 15 11:06:19 2026 -0700"
  },
  "message": "net: gro: don\u0027t merge zcopy skbs\n\n[ Upstream commit 4db79a322db8c97f7b73b8a347395ef4d685eb40 ]\n\nskb_gro_receive() can currently copy frags between the source and GRO\nskb, without checking the zerocopy status, and in particular the\nSKBFL_MANAGED_FRAG_REFS flag.\n\nWhen SKBFL_MANAGED_FRAG_REFS is set, the skb doesn\u0027t hold a reference\non the pages in shinfo-\u003efrags. Appending those frags to another skb\u0027s\nfrags without fixing up the page refcount can lead to UAF.\n\nWhen either the last skb in the GRO chain (the one we would append\nfrags to) or the source skb is zerocopy, don\u0027t merge the skbs.\n\nBUG\u003db/522218060\nTEST\u003dpresubmit\nRELEASE_NOTE\u003dFixed CVE-2026-46323 in the Linux kernel.\n\ncos-patch:security-high\nFixes: 753f1ca4e1e5 (\"net: introduce managed frags infrastructure\")\nReported-by: Huzaifa Sidhpurwala \u003chuzaifas@redhat.com\u003e\nChange-Id: I2ca35a83b532dadd9c839f34ce8226cfb9334680\nSigned-off-by: Sabrina Dubroca \u003csd@queasysnail.net\u003e\nReviewed-by: Willem de Bruijn \u003cwillemb@google.com\u003e\nLink: https://patch.msgid.link/c3b7f906bbfcbdfd7b4fa9d6c18a438870df85be.1779307748.git.sd@queasysnail.net\nSigned-off-by: Jakub Kicinski \u003ckuba@kernel.org\u003e\nSigned-off-by: Sasha Levin \u003csashal@kernel.org\u003e\nReviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/160204\nTested-by: Cusky Presubmit Bot \u003cpresubmit@cos-infra-prod.iam.gserviceaccount.com\u003e\nReviewed-by: Daniel Velasquez \u003crdvelasquez@google.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "d3c0d9cf7f36c288d311dfeb6e56ada81bee08d1",
      "old_mode": 33188,
      "old_path": "net/core/gro.c",
      "new_id": "97ab6eb0b51a806fb08127a5df44120c2852faa2",
      "new_mode": 33188,
      "new_path": "net/core/gro.c"
    }
  ]
}