CVE-2026-63824
High
Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedJul 19, 2026
First seenJul 19, 2026
Weakness typeCWE-787Out-of-bounds write
How to fix
Update
- linux linux_kernel5.10.260, 5.15.211, 6.1.177, 6.6.144, 6.12.95, 6.18.38, 7.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.20 ≤ v < 5.10.260, 5.11 ≤ v < 5.15.211, 5.16 ≤ v < 6.1.177, 6.2 ≤ v < 6.6.144, 6.7 ≤ v < 6.12.95, 6.13 ≤ v < 6.18.38, 6.19 ≤ v < 7.1.3 | 5.10.260, 5.15.211, 6.1.177, 6.6.144, 6.12.95, 6.18.38, 7.1.3 |
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