VulnerabilityPublished 8 Jun 2026Updated 6 Nov 2026

CVE-2026-46291: Linux kernel · crypto: caam – guard HMAC key hex dumps in hash_digest_key

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e8e72fdf47bd5ef7abe642b034c6178a61a8580a : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:34 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in e8e72fdf47bd5ef7abe642b034c6178a61a8580a, cd849c07b8d706425e60a4dfcef54b7b67c967ce, c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < e8e72fdf47bd5ef7abe642b034c6178a61a8580a	Fixed in e8e72fdf47bd5ef7abe642b034c6178a61a8580a
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < cd849c07b8d706425e60a4dfcef54b7b67c967ce	Fixed in cd849c07b8d706425e60a4dfcef54b7b67c967ce
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48	Fixed in c7e52fe3f7901ccb9cd29b3f7c683d809ba87e48
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < b8f12d9b00c1950779e5679b9c13908584682bb6	Fixed in b8f12d9b00c1950779e5679b9c13908584682bb6
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < a9207798fe619cbc85c8744a9b9e2af1db2b6e1a	Fixed in a9207798fe619cbc85c8744a9b9e2af1db2b6e1a
LinuxLinux	Affected ≥ 045e36780f11523e26d1e4a8c78bdc57f4003bd0, < 177730a273b18e195263ed953853273e901b5064	Fixed in 177730a273b18e195263ed953853273e901b5064

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.

References

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