{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-52897",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-08-21T06:07:11.014Z",
        "datePublished": "2024-08-21T06:10:37.316Z",
        "dateUpdated": "2024-09-12T17:33:12.687Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2024-08-21T06:10:37.316Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: qgroup: do not warn on record without old_roots populated\n\n[BUG]\nThere are some reports from the mailing list that since v6.1 kernel, the\nWARN_ON() inside btrfs_qgroup_account_extent() gets triggered during\nrescan:\n\n  WARNING: CPU: 3 PID: 6424 at fs/btrfs/qgroup.c:2756 btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs]\n  CPU: 3 PID: 6424 Comm: snapperd Tainted: P           OE      6.1.2-1-default #1 openSUSE Tumbleweed 05c7a1b1b61d5627475528f71f50444637b5aad7\n  RIP: 0010:btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs]\n  Call Trace:\n   <TASK>\n  btrfs_commit_transaction+0x30c/0xb40 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6]\n   ? start_transaction+0xc3/0x5b0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6]\n  btrfs_qgroup_rescan+0x42/0xc0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6]\n   btrfs_ioctl+0x1ab9/0x25c0 [btrfs c39c9c546c241c593f03bd6d5f39ea1b676250f6]\n   ? __rseq_handle_notify_resume+0xa9/0x4a0\n   ? mntput_no_expire+0x4a/0x240\n   ? __seccomp_filter+0x319/0x4d0\n   __x64_sys_ioctl+0x90/0xd0\n   do_syscall_64+0x5b/0x80\n   ? syscall_exit_to_user_mode+0x17/0x40\n   ? do_syscall_64+0x67/0x80\n  entry_SYSCALL_64_after_hwframe+0x63/0xcd\n  RIP: 0033:0x7fd9b790d9bf\n   </TASK>\n\n[CAUSE]\nSince commit e15e9f43c7ca (\"btrfs: introduce\nBTRFS_QGROUP_RUNTIME_FLAG_NO_ACCOUNTING to skip qgroup accounting\"), if\nour qgroup is already in inconsistent state, we will no longer do the\ntime-consuming backref walk.\n\nThis can leave some qgroup records without a valid old_roots ulist.\nNormally this is fine, as btrfs_qgroup_account_extents() would also skip\nthose records if we have NO_ACCOUNTING flag set.\n\nBut there is a small window, if we have NO_ACCOUNTING flag set, and\ninserted some qgroup_record without a old_roots ulist, but then the user\ntriggered a qgroup rescan.\n\nDuring btrfs_qgroup_rescan(), we firstly clear NO_ACCOUNTING flag, then\ncommit current transaction.\n\nAnd since we have a qgroup_record with old_roots = NULL, we trigger the\nWARN_ON() during btrfs_qgroup_account_extents().\n\n[FIX]\nUnfortunately due to the introduction of NO_ACCOUNTING flag, the\nassumption that every qgroup_record would have its old_roots populated\nis no longer correct.\n\nFix the false alerts and drop the WARN_ON()."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/qgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "e15e9f43c7ca",
                            "lessThan": "bb2c2e62539f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e15e9f43c7ca",
                            "lessThan": "75181406b4ea",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/btrfs/qgroup.c"
                    ],
                    "versions": [
                        {
                            "version": "6.1",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.1",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.1.8",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "custom"
                        },
                        {
                            "version": "6.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/bb2c2e62539f2b63c5e0beb51501d328260c7595"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75181406b4eafacc531ff2ee5fb032bd93317e2b"
                }
            ],
            "title": "btrfs: qgroup: do not warn on record without old_roots populated",
            "x_generator": {
                "engine": "bippy-c9c4e1df01b2"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "id": "CVE-2023-52897",
                                "role": "CISA Coordinator",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "version": "2.0.3",
                                "timestamp": "2024-09-10T16:03:40.621800Z"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-09-12T17:33:12.687Z"
                }
            }
        ]
    }
}