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CVE-2026-98222

Unknown

Last modified

CVE-2026-98222 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths.

Description

In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths. If the result exceeds U16_MAX, the assignment truncates the allocation size. KASAN reports a 32760-byte slab-out-of-bounds write when __ekey_init() copies the master key description into the undersized buffer. The total payload length stored in key->datalen is also a u16. Use check_add_overflow() to reject values that do not fit either destination, and use kzalloc_flex() for the flexible-array allocation.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c, < 1e720f63dbafc093a8f5d519f05b67724993edd4; >= 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c, < a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0; >= 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c, < cca38f2102a4cd35eda8d48950df4817b4b24757; >= 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c, < 8697c431e297eb0d0ab13dda6bc172b48a34f05c
LinuxLinux2.6.38

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98222?
In the Linux kernel, the following vulnerability has been resolved: KEYS: encrypted: fix integer overflow of datablob_len encrypted_key_alloc() stores datablob_len in a u16. It is computed from multiple string and payload lengths. If the result exceeds U16_MAX, the assignment truncates the allocation size. KASAN reports a 32760-byte slab-out-of-bounds write when __ekey_init() copies the master key description into the undersized buffer. The total payload length stored in key->datalen is also a u16. Use check_add_overflow() to reject values that do not fit either destination, and use kzalloc_flex() for the flexible-array allocation.
How severe is CVE-2026-98222?
Severity scoring for CVE-2026-98222 is pending analysis.
How do I fix CVE-2026-98222?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST