drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata()

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Summary

CVECVE-2026-46211
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:36 UTC
Updated2026-05-28 13:44:01 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: drm/msm/gem: fix error handling in msm_ioctl_gem_info_get_metadata() msm_ioctl_gem_info_get_metadata() always returns 0 regardless of errors. When copy_to_user() fails or the user buffer is too small, the error code stored in ret is ignored because the function unconditionally returns 0. This causes userspace to believe the ioctl succeeded when it did not. Additionally, kmemdup() can return NULL on allocation failure, but the return value is not checked. This leads to a NULL pointer dereference in the subsequent copy_to_user() call. Add the missing NULL check for kmemdup() and return ret instead of 0. Note that the SET counterpart (msm_ioctl_gem_info_set_metadata) correctly returns ret. Patchwork: https://patchwork.freedesktop.org/patch/714478/

Risk And Classification

EPSS: 0.000180000 probability, percentile 0.048460000 (date 2026-06-01)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9902cb999e4e913d98e8afe4b36c08e4a793e1ce 697e1a9559f6962f999cc4c748c2ffffcc0a7a7a git Not specified
CNA Linux Linux affected 9902cb999e4e913d98e8afe4b36c08e4a793e1ce c57c861956b89f2e2528e6384d51e2dedd915809 git Not specified
CNA Linux Linux affected 9902cb999e4e913d98e8afe4b36c08e4a793e1ce b079e85c91f446f29e808d8291189e897f1884ff git Not specified
CNA Linux Linux affected 9902cb999e4e913d98e8afe4b36c08e4a793e1ce 47cbfe2608314b833ad61a65827d8fb363bc2d2d git Not specified
CNA Linux Linux affected 6.8 Not specified
CNA Linux Linux unaffected 6.8 semver Not specified
CNA Linux Linux unaffected 6.12.90 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.32 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.9 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/47cbfe2608314b833ad61a65827d8fb363bc2d2d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b079e85c91f446f29e808d8291189e897f1884ff 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c57c861956b89f2e2528e6384d51e2dedd915809 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/697e1a9559f6962f999cc4c748c2ffffcc0a7a7a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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