CVE-2024-53101: fs: Fix uninitialized value issue in from_kuid and from_kgid
In the Linux kernel, the following vulnerability has been resolved:
fs: Fix uninitialized value issue in from_kuid and from_kgid
ocfs2_setattr() uses attr->ia_mode, attr->ia_uid and attr->ia_gid in
a trace point even though ATTR_MODE, ATTR_UID and ATTR_GID aren't set.
Initialize all fields of newattrs to avoid uninitialized variables, by
checking if ATTR_MODE, ATTR_UID, ATTR_GID are initialized, otherwise 0.
Security readout for executives and security teams
Plain-English summary
CVE-2024-53101 is a Linux kernel bug that can crash or disrupt affected systems. It requires local access with low privileges, so internet-facing remote takeover is not supported by the sources. Business urgency is moderate where shared Linux hosts, container platforms, or systems using OCFS2 are in scope.
Executive priority
Treat as a scheduled but real availability risk. It is not evidenced as actively exploited or remotely exploitable, but it affects the kernel and can cause service disruption where local users or shared workloads exist.
Technical view
The issue is an uninitialized value use in Linux fs handling: ocfs2_setattr() referenced ia_mode, ia_uid, and ia_gid in a trace point when corresponding attributes were not set. The kernel fix initializes newattrs fields defensively. CVSS 3.1 is 5.5 with local, low-privilege availability impact.
Likely exposure
Exposure is limited to affected Linux kernel versions and relevant OCFS2 setattr paths. Systems with local untrusted users, multi-tenant workloads, or container escape-adjacent local access deserve more attention. The bundle does not prove broad remote exposure.
Exploitation context
The provided sources do not show active exploitation, public exploit use, or CISA KEV listing. The CVSS vector indicates local access, low complexity, low privileges, no user interaction, and high availability impact only.
Researcher notes
Focus review on affected kernel ranges, ocfs2_setattr(), and the upstream stable commits. The source bundle supports an uninitialized-value flaw fixed by initializing newattrs fields, but does not include exploit details or distribution coverage beyond cited advisories.
Mitigation direction
Upgrade to vendor-patched Linux kernel packages addressing CVE-2024-53101.
Use fixed stable kernel releases referenced by upstream where applicable.
Prioritize shared hosts, container platforms, and systems using OCFS2.
Review Debian LTS, Siemens, and other vendor advisories for product-specific guidance.
Where patching is delayed, reduce local untrusted access to affected systems.
Validation and detection
Inventory Linux kernel versions across servers and appliances.
Compare running kernels with vendor-fixed versions for CVE-2024-53101.
Identify systems with OCFS2 enabled, loaded, or in use.
Confirm vendor advisories are applicable to deployed distributions or products.
After patching, verify hosts rebooted into the updated kernel.
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
cwe · low confidence lookup
CWE-908: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
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.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-908 · source CWE mapping
Use of Uninitialized Resource
Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.