CVE-2025-22001: accel/qaic: Fix integer overflow in qaic_validate_req()
In the Linux kernel, the following vulnerability has been resolved:
accel/qaic: Fix integer overflow in qaic_validate_req()
These are u64 variables that come from the user via
qaic_attach_slice_bo_ioctl(). Use check_add_overflow() to ensure that
the math doesn't have an integer wrapping bug.
Security readout for executives and security teams
Plain-English summary
A flaw in the Linux qaic accelerator driver can let a logged-in, low-privilege user submit values that wrap during arithmetic validation. The supplied CVSS assessment indicates possible complete loss of confidentiality, integrity, and availability. Exposure depends on whether the vulnerable driver and affected request path are available.
Executive priority
Treat as a high-priority local privilege-boundary risk on shared systems using qaic acceleration. Inventory exposed hosts promptly and apply vendor-corrected kernels. Lower priority for systems without the driver or without untrusted local access, after confirming those conditions.
Technical view
User-controlled 64-bit values passed through qaic_attach_slice_bo_ioctl() could overflow when qaic_validate_req() performs addition. Wrapped results may bypass intended bounds validation. The kernel fix applies check_add_overflow() before accepting the calculation. The CVSS 3.1 vector is local, low complexity, low privileges, no user interaction, with high impact across confidentiality, integrity, and availability.
Likely exposure
Most relevant to Linux systems exposing the affected accel/qaic driver to untrusted local users or workloads. The supplied version data names 6.4, 6.6.85, 6.12.21, 6.13.9, and 6.14, but its duplicated commit entries make exact affected ranges unclear. Confirm against distribution or kernel-vendor advisories.
Exploitation context
The supplied CVSS vector describes local exploitation requiring low privileges and no user interaction. The source bundle marks this CVE as absent from KEV and provides no evidence of active exploitation or a public exploit. Remote exploitation is not supported by the supplied evidence.
Researcher notes
The defect is CWE-190 integer overflow in request validation, corrected with checked addition. Impact is scored broadly, but the supplied sources do not document demonstrated exploitation outcomes. Version metadata is incomplete or ambiguous, including repeated commit identifiers and no CPEs; use commit presence and vendor package advisories for reliable exposure decisions.
Mitigation direction
Install a vendor kernel containing the applicable referenced stable fix.
Prioritize multi-user hosts where untrusted users or workloads can access the qaic driver.
If immediate updating is impossible, restrict untrusted access to affected qaic device interfaces.
Consult distribution guidance for exact affected and corrected package versions.
Validation and detection
Record the running kernel and distribution package versions on systems using qaic.
Confirm whether the accel/qaic driver is present, enabled, and accessible to untrusted users.
Verify the installed kernel includes the applicable referenced stable commit or vendor backport.
Recheck device permissions and workload isolation after remediation.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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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cwe · low confidence lookup
CWE-190: Exact CWE lookup
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CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-190 · source CWE mapping
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.