Security readout for executives and security teams
Plain-English summary
A flaw in the Linux AMD XDNA accelerator driver can miscalculate a user-buffer allocation, potentially corrupting kernel memory. A local user with low privileges may be able to compromise confidentiality, integrity, or availability. The supplied CVSS score is 7.8, rated high.
Executive priority
Treat this as a high-priority local privilege boundary risk on systems using AMD XDNA acceleration, especially shared compute hosts. Inventory exposure promptly and deploy supported kernel updates. Internet-facing status alone does not determine risk because exploitation requires local access.
Technical view
An integer overflow in the accel/amdxdna ubuf size calculation can produce an undersized allocation and subsequent memory corruption. The kernel fix uses check_add_overflow() before allocation. The CVSS vector indicates local access, low complexity, low privileges, no user interaction, and high potential impact.
Likely exposure
Exposure is most likely on affected Linux kernels where the accel/amdxdna driver and relevant AMD XDNA hardware or interfaces are available to local users. The supplied affected-version data is ambiguous, so kernel versions alone should not be treated as definitive without distributor or vendor confirmation.
Exploitation context
The CVSS vector describes a local, low-privilege attack surface rather than remote exploitation. CISA KEV status is false in the supplied bundle, and no cited source establishes active exploitation or public weaponization. Practical exploitability is not demonstrated by the available evidence.
Researcher notes
The central condition is arithmetic overflow before ubuf allocation, followed by possible kernel memory corruption. The supplied records identify check_add_overflow() as the correction and provide three stable commits. Exact vulnerable-to-fixed version boundaries and exploitation reliability are not established in the bundle.
Mitigation direction
- Apply a vendor-supported kernel containing the referenced overflow-check fix.
- Check Linux distributor guidance for package-specific fixed versions and backports.
- Prioritize multi-user systems exposing AMD XDNA accelerator interfaces.
- Restrict untrusted local access until remediation is confirmed.
Validation and detection
- Record the running kernel and installed kernel package versions.
- Determine whether accel/amdxdna is present and usable on each system.
- Map distributor packages against the referenced stable-kernel fixes.
- After updating, verify the remediated kernel is running.
- Monitor vendor advisories for clarified affected and fixed version ranges.
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
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CVE-2026-23280 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.
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:H/A:H1.85.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/1500b31db94374a6669e73ce94d6f71cf8e85e06CVE reference, Linux
- https://git.kernel.org/stable/c/972bf4a23478fcb247b4f507d47a584bc8aea5bdCVE reference, Linux
- https://git.kernel.org/stable/c/03808abb1d868aed7478a11a82e5bb4b3f1ca6d6CVE 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.