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CVE-2025-68183 is a Linux kernel vulnerability in the Integrity Measurement Architecture (IMA) appraisal logic, in security/integrity/ima/ima_appraise.c, where the IMA_DIGSIG flag could be incorrectly cleared when non-IMA extended attributes are set or removed. In configurations where both IMA and EVM operate in fix mode, a file that already has a valid IMA signature stored in the IMA xattr can subsequently lose the signature state if another security attribute is modified afterward. Reported triggers include setting a SELinux security attribute, removing an EVM attribute, or setting or removing ACL-related attributes. Once the flag is cleared, the kernel generates an IMA hash when the file is closed, replacing the expected digital-signature-based appraisal state with a hash-based value. The flaw can interfere with generation and preservation of correct reference IMA signatures during file creation or package installation workflows.
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A Linux kernel vulnerability in IMA involving improper handling of the IMA_DIGSIG flag when setting or removing non-IMA extended attributes.
A Linux kernel IMA-related vulnerability involving improper handling of the IMA_DIGSIG flag when setting or removing non-IMA extended attributes.
A Linux kernel vulnerability in IMA involving improper handling of the IMA_DIGSIG flag when setting or removing non-IMA extended attributes.
Linux kernel IMA vulnerability involving improper handling of the IMA_DIGSIG flag when setting or removing non-IMA xattrs.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.