ghsa-484w-f535-whcj
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
btrfs: remove BUG() after failure to insert delayed dir index item
Instead of calling BUG() when we fail to insert a delayed dir index item into the delayed node's tree, we can just release all the resources we have allocated/acquired before and return the error to the caller. This is fine because all existing call chains undo anything they have done before calling btrfs_insert_delayed_dir_index() or BUG_ON (when creating pending snapshots in the transaction commit path).
So remove the BUG() call and do proper error handling.
This relates to a syzbot report linked below, but does not fix it because it only prevents hitting a BUG(), it does not fix the issue where somehow we attempt to use twice the same index number for different index items.
{
"affected": [],
"aliases": [
"CVE-2023-52569"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-02T22:15:49Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: remove BUG() after failure to insert delayed dir index item\n\nInstead of calling BUG() when we fail to insert a delayed dir index item\ninto the delayed node\u0027s tree, we can just release all the resources we\nhave allocated/acquired before and return the error to the caller. This is\nfine because all existing call chains undo anything they have done before\ncalling btrfs_insert_delayed_dir_index() or BUG_ON (when creating pending\nsnapshots in the transaction commit path).\n\nSo remove the BUG() call and do proper error handling.\n\nThis relates to a syzbot report linked below, but does not fix it because\nit only prevents hitting a BUG(), it does not fix the issue where somehow\nwe attempt to use twice the same index number for different index items.",
"id": "GHSA-484w-f535-whcj",
"modified": "2024-03-03T00:30:32Z",
"published": "2024-03-03T00:30:32Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52569"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2c58c3931ede7cd08cbecf1f1a4acaf0a04a41a9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/39c4a9522db0072570d602e9b365119e17fb9f4f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d10fd53393cc5de4b9cf1a4b8f9984f0a037aa51"
}
],
"schema_version": "1.4.0",
"severity": []
}