CVE-2026-46291 Details
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: caam - guard HMAC key hex dumps in hash_digest_key Use print_hex_dump_devel() for dumping sensitive HMAC key bytes in hash_digest_key() to avoid leaking secrets at runtime when CONFIG_DYNAMIC_DEBUG is enabled.
A vulnerability in the Linux kernel's CAAM crypto driver has been addressed. The issue involved improper handling of HMAC key hex dumps, which could lead to unintentional leakage of sensitive key information at runtime, especially when dynamic debugging was enabled. The vulnerability affected the hash_digest_key function, where the HMAC key bytes were dumped in a way that could expose secrets. This issue has been resolved by modifying the key dumping method to a more secure approach.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version can be found in the Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/177730a273b18e195263ed953853273e901b5064 | kernel.org | Patch |
| https://git.kernel.org/stable/c/2adbfca7452eeac45117b8e803288a2767f7075f | kernel.org | Patch |
| https://git.kernel.org/stable/c/5cffe3c136891aa4d579bf5c079a68f7cb371b0c | kernel.org | Patch |
| https://git.kernel.org/stable/c/a9207798fe619cbc85c8744a9b9e2af1db2b6e1a | kernel.org | Patch |
| https://git.kernel.org/stable/c/b8f12d9b00c1950779e5679b9c13908584682bb6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48 | kernel.org | Patch |
| https://git.kernel.org/stable/c/cd849c07b8d706425e60a4dfcef54b7b67c967ce | kernel.org | Patch |
| https://git.kernel.org/stable/c/e8e72fdf47bd5ef7abe642b034c6178a61a8580a | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 3.6, < 5.10.259 >= 5.11, < 5.15.210 >= 5.16, < 6.1.176 >= 6.2, < 6.6.140 >= 6.7, < 6.12.88 >= 6.13, < 6.18.30 >= 6.19, < 7.0.7 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 19, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 8, 2026 | New CVE Received | kernel.org |