In the Linux kernel, the following vulnerability has been resolved: nilfs2: handle inconsistent state in nilfs_btnode_create_block() Syzbot reported that a buffer state inconsistency was detected in nilfs_btnode_create_block(), triggering a kernel bug. It is not appropriate to treat this inconsistency as a bug; it can occur if the argument block address (the buffer index of the newly created block) is a virtual block number and has been reallocated due to corruption of the bitmap used to manage its allocation state. So, modify nilfs_btnode_create_block() and its callers to treat it as a possible filesystem error, rather than triggering a kernel bug.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

No data.

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/012be828a118bf496e666ef1fc47fc0e7358ada2 cve-icon cve-icon
https://git.kernel.org/stable/c/02b87e6334a38c65eef49848d3f1ac422f0b2a44 cve-icon cve-icon
https://git.kernel.org/stable/c/19cce46238ffe3546e44b9c74057103ff8b24c62 cve-icon cve-icon
https://git.kernel.org/stable/c/366c3f688dd0288cbe38af1d3a886b5c62372e4a cve-icon cve-icon
https://git.kernel.org/stable/c/4811f7af6090e8f5a398fbdd766f903ef6c0d787 cve-icon cve-icon
https://git.kernel.org/stable/c/5f0a6800b8aec1b453c7fe4c44fcaac5ffe9d52e cve-icon cve-icon
https://git.kernel.org/stable/c/be56dfc9be0604291267c07b0e27a69a6bda4899 cve-icon cve-icon
https://git.kernel.org/stable/c/e34191cce3ee63dfa5fb241904aaf2a042d5b6d8 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2024081747-CVE-2024-42295-4f43@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-42295 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-42295 cve-icon
History

Thu, 12 Sep 2024 10:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-388
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 5.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H'}

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 19 Aug 2024 19:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Mon, 19 Aug 2024 04:45:00 +0000

Type Values Removed Values Added
References

Sat, 17 Aug 2024 09:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: nilfs2: handle inconsistent state in nilfs_btnode_create_block() Syzbot reported that a buffer state inconsistency was detected in nilfs_btnode_create_block(), triggering a kernel bug. It is not appropriate to treat this inconsistency as a bug; it can occur if the argument block address (the buffer index of the newly created block) is a virtual block number and has been reallocated due to corruption of the bitmap used to manage its allocation state. So, modify nilfs_btnode_create_block() and its callers to treat it as a possible filesystem error, rather than triggering a kernel bug.
Title nilfs2: handle inconsistent state in nilfs_btnode_create_block()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-08-17T09:09:03.618Z

Updated: 2024-12-19T09:15:50.272Z

Reserved: 2024-07-30T07:40:12.269Z

Link: CVE-2024-42295

cve-icon Vulnrichment

Updated: 2024-09-11T12:42:23.644Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-08-17T09:15:10.017

Modified: 2024-08-19T12:59:59.177

Link: CVE-2024-42295

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-08-17T00:00:00Z

Links: CVE-2024-42295 - Bugzilla