CVE-2021-3744
No known exploitation. EPSS puts it in the 43rd percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
A memory leak flaw was found in the Linux kernel in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ccp/ccp-ops.c, which allows attackers to cause a denial of service (memory consumption). This vulnerability is similar with the older CVE-2019-18808.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.5% chance of exploitation activity in the next 30 days, which ranks it in the 43rd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 1574 days, from the signal feeds we watch.
- OpenVAS check added
- Patch availablerecord updated
- Publishedweakness classified
Affected products
- build of quarkusOperating Systems / linux-distro
- codeready linux builderOperating Systems / linux-distro
- codeready linux builder eusOperating Systems / linux-distro
- codeready linux builder for power little endianOperating Systems / linux-distro
- codeready linux builder for power little endian eusOperating Systems / linux-distro
- developer toolsOperating Systems / linux-distro
- Red Hat Enterprise LinuxOperating Systems / linux-distro
- enterprise linux for ibm z systems eusOperating Systems / linux-distro
And 13 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Scored 5.5 by NVD.
How it is reached
- Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required LowRequires basic user-level privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity NoneNo integrity impact
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
- openwall.com/lists/oss-security/2021/09/14/1
- bugzilla.redhat.com/show_bug.cgi?id=2000627
- github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
And 43 more references. See all after sign-in
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