Security readout for executives and security teams
Plain-English summary
CVE-2023-53423 is a Linux kernel memory leak in objtool error handling. The sourced impact is availability only, with local low-privilege access required and no confidentiality or integrity impact stated. Treat it as a maintenance-priority kernel issue, not an emergency based on the provided evidence.
Executive priority
Schedule remediation through standard kernel update cycles. Escalate only for systems where local users can repeatedly trigger availability failures or where vendor guidance indicates broader operational impact.
Technical view
create_static_call_sections() allocated key_name with strdup() and failed to free it on some error paths, causing CWE-401 memory leak behavior. The CVSS 3.1 vector is local, low complexity, low privileges, no user interaction, unchanged scope, and high availability impact.
Likely exposure
Exposure is limited to Linux versions identified in the source bundle, including 5.10-era through 6.3 entries. Because the source does not map distro packages, validate against your vendor kernel advisories and package metadata before declaring systems affected.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation or public weaponization. The attack requirements are local access with low privileges, and the documented impact is resource leakage leading to availability risk.
Researcher notes
The evidence is narrow: a memory leak fix in Linux objtool error paths, mapped to CWE-401 and CVSS 5.5. The source bundle does not provide distro package names, runtime trigger details, proof of exploitation, or compensating controls.
Mitigation direction
- Update affected Linux kernels to vendor releases containing the referenced stable fixes.
- Check your Linux distribution advisory for exact fixed package versions.
- Prioritize build hosts and systems running affected kernel branches.
- Track this through normal kernel patch management unless vendor guidance elevates urgency.
Validation and detection
- Inventory Linux kernel versions across servers, endpoints, and build environments.
- Compare installed kernel packages with vendor advisories for CVE-2023-53423.
- Confirm whether referenced stable commits are present in maintained source trees.
- Document systems still on affected branches for patch scheduling.
Public sources used
- CVE Program
- CVE List V5
- Linux stable commit a1368eaea058e451d20ea99ca27e72d9df0d16dd
- Linux stable commit 3a75866a5ceff5d4fdd5471e06c4c4d03e0298b3
- Linux stable commit a8f63d747bf7c983882a5ea7456a5f84ad3acad5
- Linux stable commit d131718d9c45d559951f57c4b88209ca407433c4
- Linux stable commit 3da73f102309fe29150e5c35acd20dd82063ff67
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-2023-53423 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/a1368eaea058e451d20ea99ca27e72d9df0d16ddCVE reference, Linux
- https://git.kernel.org/stable/c/3a75866a5ceff5d4fdd5471e06c4c4d03e0298b3CVE reference, Linux
- https://git.kernel.org/stable/c/a8f63d747bf7c983882a5ea7456a5f84ad3acad5CVE reference, Linux
- https://git.kernel.org/stable/c/d131718d9c45d559951f57c4b88209ca407433c4CVE reference, Linux
- https://git.kernel.org/stable/c/3da73f102309fe29150e5c35acd20dd82063ff67CVE 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.