Xdgmime: heap-based buffer overflow in _xdg_mime_magic_parse_magic_line() in xdgmimemagic.c

Summary

A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.

Timeline

1. Jul 17, 2026, 7:44 PM UTCCVE published
2. Jul 22, 2026, 6:18 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: no · Technical impact: partial

3. Oct 29, 2026, 10:22 PM UTCRecord last updated

Affected versions

• xdgmime

  Version range not reported

• glib2

  Version range not reported

• glib2

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• glib2

  Version range not reported

• glib2

  Version range not reported

• glib2

  Version range not reported

• glib2

  Version range not reported

• glib2

  Version range not reported

• cert-manager/jetstack-cert-manager-acmesolver-rhel9

  Version range not reported

• cert-manager/jetstack-cert-manager-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-rhel9

  Version range not reported

• cert-manager/cert-manager-istio-csr-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-bundle

  Version range not reported

• cert-manager/jetstack-cert-manager-acmesolver-rhel9

  Version range not reported

• cert-manager/jetstack-cert-manager-rhel9

  Version range not reported

• cert-manager/cert-manager-istio-csr-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-bundle

  Version range not reported

• cert-manager/jetstack-cert-manager-rhel9

  Version range not reported

• cert-manager/cert-manager-istio-csr-rhel9

  Version range not reported

• cert-manager/cert-manager-operator-rhel9

  Version range not reported

• cert-manager/jetstack-cert-manager-acmesolver-rhel9

  Version range not reported

• cert-manager/cert-manager-trust-manager-rhel9

  Version range not reported

• rhaiis/model-opt-cuda-rhel9

  Version range not reported

• rhaiis/vllm-cuda-rhel9

  Version range not reported

• rhaiis/vllm-rocm-rhel9

  Version range not reported

• rhaii/vllm-rocm-rhel9

  Version range not reported

• rhaii/vllm-gaudi-rhel9

  Version range not reported

• rhaii/model-opt-cuda-rhel9

  Version range not reported

• rhaii/vllm-cuda-rhel9

  Version range not reported

• rhaii/vllm-spyre-rhel9

  Version range not reported

• rhaii/vllm-cpu-rhel9

  Version range not reported

• costmanagement/costmanagement-ui-rhel10

  Version range not reported

• rhelai3/disk-image-cuda-rhel9

  Version range not reported

• rhelai3/bootc-aws-cuda-rhel9

  Version range not reported

• rhelai3/bootc-azure-cuda-rhel9

  Version range not reported

• rhelai3/bootc-azure-rocm-rhel9

  Version range not reported

• rhelai3/bootc-cuda-rhel9

  Version range not reported

• rhelai3/bootc-gcp-cuda-rhel9

  Version range not reported

• rhelai3/bootc-rocm-rhel9

  Version range not reported

• rhai/base-image-rocm-rhel9

  Version range not reported

• rhai/base-image-tpu-rhel9

  Version range not reported

• rhai/base-image-cpu-rhel9

  Version range not reported

• rhai/base-image-spyre-rhel9

  Version range not reported

• rhai/base-image-cuda-rhel9

  Version range not reported

• rhai/base-image-tpu-rhel9

  Version range not reported

• rhai/base-image-rocm-rhel9

  Version range not reported

• rhai/base-image-cpu-rhel9

  Version range not reported

• rhai/base-image-spyre-rhel9

  Version range not reported

• rhai/base-image-cuda-rhel9

  Version range not reported

• rhai/base-image-cpu-rhel9

  Version range not reported

• rhai/base-image-tpu-rhel9

  Version range not reported

• rhai/base-image-rocm-6.4-rhel9

  Version range not reported

• rhai/base-image-cuda-13.0-rhel9

  Version range not reported

• rhai/base-image-rocm-7.0-rhel9

  Version range not reported

• rhai/base-image-cuda-12.9-rhel9

  Version range not reported

• rhai/base-image-spyre-rhel9

  Version range not reported

• rhai/base-image-neuron-rhel9

  Version range not reported

• rhai/base-image-neuron-rhel9

  Version range not reported

• rhai/base-image-tpu-rhel9

  Version range not reported

• rhai/base-image-gaudi-rhel9

  Version range not reported

• rhai/base-image-cpu-rhel9

  Version range not reported

• rhai/base-image-spyre-rhel9

  Version range not reported

• rhai/base-image-cuda-13.0-rhel9

  Version range not reported

• rhai/base-image-cuda-12.9-rhel9

  Version range not reported

• rhai/base-image-rocm-7.1-rhel9

  Version range not reported

• rhai/base-image-rocm-6.4-rhel9

  Version range not reported

• rhai/base-image-gaudi-rhel9

  Version range not reported

• rhai/base-image-cpu-rhel9

  Version range not reported

• rhai/base-image-neuron-rhel9

  Version range not reported

• rhai/base-image-rubin-rhel9

  Version range not reported

• rhai/base-image-cuda-13.0-rhel9

  Version range not reported

• rhai/base-image-tpu-rhel9

  Version range not reported

• rhai/base-image-rocm-7.14-rhel9

  Version range not reported

• rhai/base-image-spyre-rhel9

  Version range not reported

• rhai/base-image-cuda-12.9-rhel9

  Version range not reported

• rhui5/cds-kubernetes-rhel9

  Version range not reported

• rhui5/cds-rhel9

  Version range not reported

• rhui5/haproxy-rhel9

  Version range not reported

• rhui5/installer-rhel9

  Version range not reported

• rhui5/rhua-rhel9

  Version range not reported

• glib2

  Version range not reported

• webkitgtk4

  Version range not reported

• webkit2gtk3

  Version range not reported

• webkit2gtk3

  Version range not reported

References 25