Security readout for executives and security teams
Plain-English summary
CVE-2023-53436 is a Linux kernel memory leak in the snic SCSI driver error path. If adding a device fails, allocated naming memory may not be released. The business risk is primarily local availability impact, not data theft or remote compromise, based on the provided CVSS vector.
Executive priority
Treat as routine but timely kernel maintenance. Prioritize storage hosts and shared infrastructure where local availability loss would disrupt operations. No source provided evidence of remote exploitation, data exposure, or active attacks.
Technical view
The flaw is CWE-401 in the Linux kernel snic driver. When device_add() fails after dev_set_name(), the error path should call put_device() so cleanup frees the allocated name through kobject cleanup. CVSS 3.1 is 5.5 with local attack vector, low privileges, no confidentiality or integrity impact, and high availability impact.
Likely exposure
Exposure is most likely on Linux systems running affected kernel versions with the snic SCSI driver present or in use. The source bundle lists Linux as affected and provides multiple stable kernel commit references. Distribution packaging may change exact exposure, so validate through vendor kernel advisories.
Exploitation context
The provided sources do not show active exploitation, and KEV is false. The CVSS vector indicates local access with low privileges and no user interaction. Evidence supports a potential availability issue through memory leakage, but does not provide exploit status or practical trigger details.
Researcher notes
The fix is narrowly scoped to snic device-add failure cleanup. Assessment should focus on affected kernel lineage, distro backports, and whether the snic driver can be reached on deployed systems. Do not assume broader SCSI subsystem exposure without additional evidence.
Mitigation direction
- Apply Linux kernel updates containing the referenced stable fixes.
- Check your distribution advisory for exact fixed package versions.
- Prioritize hosts using the snic SCSI driver or related storage hardware.
- Use vendor guidance if kernel backport status is unclear.
Validation and detection
- Inventory kernel versions across Linux hosts.
- Identify systems where the snic SCSI driver is available or loaded.
- Compare installed kernels with distribution fixed versions or referenced stable commits.
- Confirm patched source handles device_add() failure with put_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-401: 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.
Open ATT&CK lookupCVE-2023-53436 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/789275f7c0544374d40bc8d9c81f96751a41df45CVE reference, Linux
- https://git.kernel.org/stable/c/f830968d464f55e11bc9260a132fc77daa266aa3CVE reference, Linux
- https://git.kernel.org/stable/c/cea09922f5f75652d55b481ee34011fc7f19868bCVE reference, Linux
- https://git.kernel.org/stable/c/58889d5ad74cbc1c9595db74e13522b58b69b0ecCVE reference, Linux
- https://git.kernel.org/stable/c/461f8ac666fa232afee5ed6420099913ec4e4ba2CVE reference, Linux
- https://git.kernel.org/stable/c/7723a5d5d187626c4c640842e522cf4e9e39492eCVE reference, Linux
- https://git.kernel.org/stable/c/ed0acb1ee2e9322b96611635a9ca9303d15ac76cCVE reference, Linux
- https://git.kernel.org/stable/c/41320b18a0e0dfb236dba4edb9be12dba1878156CVE reference, Linux
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.
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.