CVE-2024-41078
Btrfs Quota Root Leak
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix quota root leak after quota disable failure If during the quota disable we fail when cleaning the quota tree or when deleting the root from the root tree, we jump to the 'out' label without ever dropping the reference on the quota root, resulting in a leak of the root since fs_info->quota_root is no longer pointing to the root (we have set it to NULL just before those steps). Fix this by always doing a btrfs_put_root() call under the 'out' label. This is a problem that exists since qgroups were first added in 2012 by commit bed92eae26cc ("Btrfs: qgroup implementation and prototypes"), but back then we missed a kfree on the quota root and free_extent_buffer() calls on its root and commit root nodes, since back then roots were not yet reference counted.
INFO
Published Date :
July 29, 2024, 3:15 p.m.
Last Modified :
Nov. 21, 2024, 9:32 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2024-41078.
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The following list is the news that have been mention
CVE-2024-41078 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-41078 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/5ef3961682e5310f2221bae99bcf9f5d0f4b0d51 Added Reference https://git.kernel.org/stable/c/7dd6a5b96157a21245566b21fd58276a214357ff Added Reference https://git.kernel.org/stable/c/8a69529f22590b67bb018de9acbcf94abc8603cf Added Reference https://git.kernel.org/stable/c/94818bdb00ef34a996a06aa63d11f591074cb757 Added Reference https://git.kernel.org/stable/c/a7e4c6a3031c74078dba7fa36239d0f4fe476c53 Added Reference https://git.kernel.org/stable/c/f88aeff5a173e8ba3133314eb4b964236ef3589d -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 29, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: btrfs: qgroup: fix quota root leak after quota disable failure If during the quota disable we fail when cleaning the quota tree or when deleting the root from the root tree, we jump to the 'out' label without ever dropping the reference on the quota root, resulting in a leak of the root since fs_info->quota_root is no longer pointing to the root (we have set it to NULL just before those steps). Fix this by always doing a btrfs_put_root() call under the 'out' label. This is a problem that exists since qgroups were first added in 2012 by commit bed92eae26cc ("Btrfs: qgroup implementation and prototypes"), but back then we missed a kfree on the quota root and free_extent_buffer() calls on its root and commit root nodes, since back then roots were not yet reference counted. Added Reference kernel.org https://git.kernel.org/stable/c/94818bdb00ef34a996a06aa63d11f591074cb757 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8a69529f22590b67bb018de9acbcf94abc8603cf [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5ef3961682e5310f2221bae99bcf9f5d0f4b0d51 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f88aeff5a173e8ba3133314eb4b964236ef3589d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7dd6a5b96157a21245566b21fd58276a214357ff [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a7e4c6a3031c74078dba7fa36239d0f4fe476c53 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-41078 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-41078
weaknesses.