CVE-2024-41015: ocfs2: add bounds checking to ocfs2_check_dir_entry()
In the Linux kernel, the following vulnerability has been resolved:
ocfs2: add bounds checking to ocfs2_check_dir_entry()
This adds sanity checks for ocfs2_dir_entry to make sure all members of
ocfs2_dir_entry don't stray beyond valid memory region.
Security readout for executives and security teams
Plain-English summary
A Linux kernel flaw in OCFS2 directory-entry validation could allow entry fields to extend beyond expected memory boundaries. Rated 7.8/high, it may threaten confidentiality, integrity, and availability after local, low-privileged access. Systems where OCFS2 is unreachable are likely less exposed, but distribution-specific status requires confirmation.
Executive priority
Treat this as a prompt patching priority for systems using OCFS2 or allowing untrusted local access. It is high severity but not evidenced as actively exploited in the supplied sources. Scope exposure first, then apply supported kernel updates and verify the patched kernel is actually running.
Technical view
ocfs2_check_dir_entry() lacked complete bounds checks ensuring all ocfs2_dir_entry members remained within a valid memory region. Linux stable commits add the missing sanity checks. The supplied CVSS 3.1 vector is local, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impacts.
Likely exposure
Exposure is most relevant to affected Linux kernels where OCFS2 code is reachable. The CVSS vector indicates a local—not network-direct—attack requiring low privileges. Distribution backports may change exposure independently of the displayed kernel version, and the supplied affected-version data is not sufficiently clear for definitive package-level conclusions.
Exploitation context
The bundle marks this CVE as absent from KEV and provides no evidence of active exploitation or a public exploit. That does not prove exploitation is impossible. The local-access requirement reduces remote exposure, while the stated potential impact remains substantial if the vulnerable OCFS2 path is reached.
Researcher notes
The root issue is insufficient structural bounds validation for ocfs2_dir_entry. The supplied affected-version list contains ambiguous entries, including a repeated commit identifier and mixed version values, so avoid deriving exact vulnerable ranges from it alone. Review stable commits and distribution backport records for authoritative build-level status.
Mitigation direction
Apply a vendor-supported kernel update incorporating the relevant stable fix for CVE-2024-41015.
Check distribution advisories because vendors may backport the fix without changing to an upstream fixed version.
Prioritize systems using OCFS2 and systems accessible to untrusted local users.
Where patching is delayed, restrict unnecessary local access and follow vendor-provided mitigations.
Validation and detection
Inventory running kernels and identify hosts using or configured for OCFS2.
Compare installed packages against distribution advisories and documented backports.
Confirm the running kernel, not only the installed package, includes the vendor fix.
Reassess OCFS2-relevant hosts after remediation and document any accepted exceptions.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
Conservative CVE-to-ATT&CK context
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CVE-2024-41015 mapping review
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We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.