Security readout for executives and security teams
Plain-English summary
This is a Linux kernel bug in a Hisilicon PHY driver. A boundary check can allow memory access past a fixed ports array. On affected systems, a local low-privileged user could potentially cause serious confidentiality impact or system availability loss. Exposure is likely limited to systems using the relevant driver and hardware.
Executive priority
Treat as high priority for Linux fleets with Hisilicon-based platforms or custom kernels. For general server fleets without this hardware or driver, validate exposure first, then patch through normal kernel maintenance. No active exploitation evidence is provided.
Technical view
In hisi_inno_phy_probe(), the code checked whether an index was greater than INNO_PHY_PORT_NUM instead of greater than or equal to it. That permits INNO_PHY_PORT_NUM as an array index for priv->ports[], creating an out-of-bounds condition. Kernel stable commits correct the bounds check.
Likely exposure
The CVSS vector is local, low complexity, low privileges, and no user interaction. Internet-facing exposure is not indicated. Risk is concentrated on affected Linux kernels where the Hisilicon Inno PHY driver is present, built, and reachable on relevant hardware.
Exploitation context
The provided sources do not show CISA KEV listing or other evidence of active exploitation. The impact is still meaningful because successful misuse occurs in kernel context, but exploitation details and real-world abuse are not established in the bundle.
Researcher notes
The source description says out-of-bounds write, while the supplied CWE is CWE-125, which usually denotes out-of-bounds read. Analysts should preserve that discrepancy and rely on the kernel commit context when classifying internal findings.
Mitigation direction
- Update affected Linux kernels using vendor or distribution-supported packages.
- Track the listed upstream stable commits in kernel maintenance planning.
- Prioritize systems using Hisilicon PHY hardware or the affected driver.
- Check distribution advisories before relying on upstream version assumptions.
- Limit local untrusted access on exposed affected systems until patched.
Validation and detection
- Inventory Linux kernel versions against the affected version list.
- Confirm whether the Hisilicon Inno PHY driver is built or loaded.
- Map affected assets to hardware platforms using this PHY driver.
- Verify installed kernel packages include the relevant stable fix.
- Document distro advisory status where upstream and vendor versions differ.
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-125: 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-2023-53238 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
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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:H/I:N/A:H1.85.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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/2843a2e703f5cb85c9eeca11b7ee90861635a010CVE reference, Linux
- https://git.kernel.org/stable/c/195e806b2afb0bad6470c9094f7e45e0cf109ee0CVE reference, Linux
- https://git.kernel.org/stable/c/ad249aa3c38f329f91fba8b4b3cd087e79fb0ce8CVE reference, Linux
- https://git.kernel.org/stable/c/6d8a71e4c3a2fa4960cc50996e76a42b62fab677CVE reference, Linux
- https://git.kernel.org/stable/c/01cb355bb92e8fcf8306e11a4774d610c5864e39CVE reference, Linux
- https://git.kernel.org/stable/c/ce69eac840db0b559994dc4290fce3d7c0d7bccdCVE reference, Linux
- https://git.kernel.org/stable/c/13c088cf3657d70893d75cf116be937f1509cc0fCVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.