Vulnerability-Lookup

CVE-2026-68257 (GCVE-0-2026-68257)

Vulnerability from cvelistv5 – Published: 2026-08-10 12:01 – Updated: 2026-08-18 06:55

Title

drm/amdkfd: fix 32-bit overflow in CWSR total size calculation

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix 32-bit overflow in CWSR total size calculation total_cwsr_size was computed in 32-bit before being used as a BO/SVM allocation size. With large ctx_save_restore_area_size and debug_memory_size multiplied by the XCC count, the product can wrap, yielding an undersized CWSR save area that firmware later overruns. Promote total_cwsr_size to u64 and use check_add_overflow()/ check_mul_overflow() in both kfd_queue_acquire_buffers() and kfd_queue_release_buffers(). (cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/b88ffe6593607364a…
https://git.kernel.org/stable/c/abce3276c57e36c95…
https://git.kernel.org/stable/c/865532d54eb57b660…
https://git.kernel.org/stable/c/2b0386d4293920e69…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 325aa07165394b8e866ffe9ec1d4c99d9195b2f2 , < b88ffe6593607364a8c06a48c6f29e55437cdf8e (git) Affected: d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 , < abce3276c57e36c955627307469b9f009057a467 (git) Affected: d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 , < 865532d54eb57b660b1cb1b0e1755776ce21b849 (git) Affected: d15deafab5d722afb9e2f83c5edcdef9d9d98bd1 , < 2b0386d4293920e690c0e017708f999b93cc729b (git) Affected: 63600103d2ac5c09fdeec5b931b396e4e0efd5d8 (git) Affected: 6.12.59 , < 6.12.101 (semver) Affected: 6.17.9 , < 6.18 (semver)	guessed
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)	guessed

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}

WID-SEC-W-2026-2730

Vulnerability from csaf_certbund - Published: 2026-08-10 22:00 - Updated: 2026-09-10 22:00

Summary

Linux Kernel: Mehrere Schwachstellen

Severity

Hoch

Scope

345 vulnerabilities in this advisory, including CVE-2026-68257.

CVE-2026-68257

Known affected: 8 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-68257 (GCVE-0-2026-68257)

WID-SEC-W-2026-2730

Tags

Sightings

Nomenclature

Related by attack behaviour