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Medium severity5.5NVD Advisory· Published Feb 14, 2026· Updated Jun 17, 2026

CVE-2026-23149

CVE-2026-23149

Description

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.

Affected products

11
  • Linux/Kernel10 versions
    cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 9 more
    • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=6.18,<6.18.9
    • cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
    • cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
    • (no CPE)range: 6.18
    • (no CPE)
  • osv-coords
    pkg:linux/kernel
    Range: >= 6.18.0, < 6.18.9

Patches

Vulnerability mechanics

References

2

News mentions

0

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