ghsa-6f72-79f8-3qcp
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to avoid dirent corruption
As Al reported in link[1]:
f2fs_rename() ... if (old_dir != new_dir && !whiteout) f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir); else f2fs_put_page(old_dir_page, 0);
You want correct inumber in the ".." link. And cross-directory rename does move the source to new parent, even if you'd been asked to leave a whiteout in the old place.
[1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/
With below testcase, it may cause dirent corruption, due to it missed to call f2fs_set_link() to update ".." link to new directory. - mkdir -p dir/foo - renameat2 -w dir/foo bar
[ASSERT] (__chk_dots_dentries:1421) --> Bad inode number[0x4] for '..', parent parent ino is [0x3] [FSCK] other corrupted bugs [Fail]
{
"affected": [],
"aliases": [
"CVE-2023-52444"
],
"database_specific": {
"cwe_ids": [
"CWE-119"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-02-22T17:15:08Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to avoid dirent corruption\n\nAs Al reported in link[1]:\n\nf2fs_rename()\n...\n\tif (old_dir != new_dir \u0026\u0026 !whiteout)\n\t\tf2fs_set_link(old_inode, old_dir_entry,\n\t\t\t\t\told_dir_page, new_dir);\n\telse\n\t\tf2fs_put_page(old_dir_page, 0);\n\nYou want correct inumber in the \"..\" link. And cross-directory\nrename does move the source to new parent, even if you\u0027d been asked\nto leave a whiteout in the old place.\n\n[1] https://lore.kernel.org/all/20231017055040.GN800259@ZenIV/\n\nWith below testcase, it may cause dirent corruption, due to it missed\nto call f2fs_set_link() to update \"..\" link to new directory.\n- mkdir -p dir/foo\n- renameat2 -w dir/foo bar\n\n[ASSERT] (__chk_dots_dentries:1421) --\u003e Bad inode number[0x4] for \u0027..\u0027, parent parent ino is [0x3]\n[FSCK] other corrupted bugs [Fail]",
"id": "GHSA-6f72-79f8-3qcp",
"modified": "2024-06-27T12:30:43Z",
"published": "2024-02-22T18:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52444"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/02160112e6d45c2610b049df6eb693d7a2e57b46"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2fb4867f4405aea8c0519d7d188207f232a57862"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/53edb549565f55ccd0bdf43be3d66ce4c2d48b28"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5624a3c1b1ebc8991318e1cce2aa719542991024"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6f866885e147d33efc497f1095f35b2ee5ec7310"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d3c0b49aaa12a61d560528f5d605029ab57f0728"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f0145860c20be6bae6785c7a2249577674702ac7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f100ba617d8be6c98a68f3744ef7617082975b77"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00016.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.