Security readout for executives and security teams
Plain-English summary
CVE-2024-50153 is a Linux kernel availability bug in the SCSI target core. Under a memory allocation failure path, the kernel can hit a null pointer dereference and crash. The published scoring requires local access with low privileges, so this is mainly a stability and denial-of-service concern, not a remote compromise issue.
Executive priority
Treat this as a moderate-priority availability issue. Patch through normal kernel maintenance, faster for shared Linux systems, storage infrastructure, and appliances where local users or tenants exist. There is no sourced evidence of active exploitation in the provided bundle.
Technical view
In target_alloc_device(), if device queue allocation fails, cleanup may call dev->transport->free_device() before dev->transport is initialized. That causes a null pointer dereference in target_core_mod. The fix frees the device through hba->backend->ops->free_device() instead. The CVSS vector is AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Likely exposure
Exposure is most relevant to Linux systems running affected kernel versions and using or loading the SCSI target core functionality. The source bundle lists affected Linux kernel ranges and several stable kernel fixes, plus Debian LTS and Siemens advisories. Product-specific exposure beyond those sources is not established here.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The CVSS vector indicates local, low-privilege conditions with high availability impact. Evidence supports a crash/denial-of-service risk, not confidentiality or integrity impact.
Researcher notes
The vulnerable path is an error cleanup path triggered when dev queue allocation fails during target_alloc_device(). Analysis should focus on affected kernel lineage, whether target_core_mod can be initialized, and whether vendor backports include the stable fix. Do not assume broader product exposure without vendor confirmation.
Mitigation direction
- Apply vendor kernel updates that include the referenced stable Linux fixes.
- Follow Debian LTS or Siemens guidance where those distributions or products apply.
- Prioritize multi-user systems where local low-privilege access is available.
- Check vendor guidance before changing SCSI target modules or storage settings.
Validation and detection
- Inventory Linux kernel versions across exposed servers and appliances.
- Check whether target_core_mod or SCSI target functionality is present or used.
- Confirm patched builds include a cited stable commit or vendor advisory fix.
- Review crash logs for null pointer dereferences in target_alloc_device.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2024-50153 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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.
SSVC decision data
CVSS vector scores
1 official scoreWe 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/8c1e6717f60d31f8af3937c23c4f1498529584e1CVE reference, Linux
- https://git.kernel.org/stable/c/39e02fa90323243187c91bb3e8f2f5f6a9aacfc7CVE reference, Linux
- https://git.kernel.org/stable/c/895ab729425ef9bf3b6d2f8d0853abe64896f314CVE reference, Linux
- https://git.kernel.org/stable/c/b80e9bc85bd9af378e7eac83e15dd129557bbdb6CVE reference, Linux
- https://git.kernel.org/stable/c/14a6a2adb440e4ae97bee73b2360946bd033daddCVE reference, Linux
- https://git.kernel.org/stable/c/fca6caeb4a61d240f031914413fcc69534f6dc03CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.htmlCVE reference, CVE
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlCVE reference, CVE
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.