CVE-2026-23149 (GCVE-0-2026-23149)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:01 – Updated: 2026-05-11 22:01
VLAI
Title
drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl() Since GEM bo handles are u32 in the uapi and the internal implementation uses idr_alloc() which uses int ranges, passing a new handle larger than INT_MAX trivially triggers a kernel warning: idr_alloc(): ... if (WARN_ON_ONCE(start < 0)) return -EINVAL; ... Fix it by rejecting new handles above INT_MAX and at the same time make the end limit calculation more obvious by moving into int domain.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < ae8831ee0fb2f5f41f39722e7b3749d65bb78d08 (git)
Affected: 53096728b8910c6916ecc6c46a5abc5c678b58d9 , < 12f15d52d38ac53f7c70ea3d4b3d76afed04e064 (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.9 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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  • 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.
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  • 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.



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