CVE-2026-28529: cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of t

Q: How do I fix CVE-2026-28529?

cryptodev-linux: upgrade to newer than 1.14. Exact commands for each OS are on this page.

Q: Is CVE-2026-28529 being exploited?

CVE-2026-28529 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-28529 affect?

CVE-2026-28529 affects cryptodev-linux. Severity is high (CVSS 7.8). cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypt

Q: How urgent is CVE-2026-28529?

Priority 39/100. High severity; Public exploit reference; On your watchlist

Routine

HIGH 7.8WATCHLISTUPGRADE

CVE-2026-28529 is a high-severity flaw (CVSS 7.8) affecting cryptodev-linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypto interface can repeatedly decrement reference counts of controlled pages to achieve local privilege escalation.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 93%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-03-25
Last modified	2026-08-17

Publisher (CNA): VulnCheck · Vendor: cryptodev-linux

Last updated 2026-08-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-25 14:16 UTCPublished CVE record published
2026-08-17 18:02 UTCUpdated Record last modified

cryptodev-linux cryptodev-linux UPGRADE

Affected: <= 1.14

Fixed in: newer than 1.14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cryptodev-linux || rpm -q cryptodev-linux || cryptodev-linux --version

2. UPGRADE to newer than 1.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cryptodev-linux

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cryptodev-linux

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-28529?

cryptodev-linux: upgrade to newer than 1.14. Exact commands for each OS are on this page.

Is CVE-2026-28529 being exploited?

CVE-2026-28529 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-28529 affect?

CVE-2026-28529 affects cryptodev-linux. Severity is high (CVSS 7.8). cryptodev-linux version 1.14 and prior contain a page reference handling flaw in the get_userbuf function of the /dev/crypto device driver that allows local users to trigger use-after-free conditions. Attackers with access to the /dev/crypt

How urgent is CVE-2026-28529?

Priority 39/100. High severity; Public exploit reference; On your watchlist

References

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