CVE-2026-98222KEYS: encrypted: fix integer overflow of datablob_len
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c builds before 1e720f63dbafc093a8f5d519f05b67724993edd4; from 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c before a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0; from 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c before cca38f2102a4cd35eda8d48950df4817b4b24757; from 7e70cb4978507cf31d76b90e4cfb4c28cad87f0c before 8697c431e297eb0d0ab13dda6bc172b48a34f05c | CNA record |
References
- https://git.kernel.org/stable/c/1e720f63dbafc093a8f5d519f05b67724993edd4
- https://git.kernel.org/stable/c/a1a98eca102b1cbbc37ff9eaa197ae4e6a3ea4b0
- https://git.kernel.org/stable/c/cca38f2102a4cd35eda8d48950df4817b4b24757
- https://git.kernel.org/stable/c/8697c431e297eb0d0ab13dda6bc172b48a34f05c
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.