Vulnerability Details : CVE-2021-3736
A flaw was found in the Linux kernel. A memory leak problem was found in mbochs_ioctl in samples/vfio-mdev/mbochs.c in Virtual Function I/O (VFIO) Mediated devices. This flaw could allow a local attacker to leak internal kernel information.
Vulnerability category: Information leak
Products affected by CVE-2021-3736
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3736
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3736
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2021-3736
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: secalert@redhat.com (Secondary)
-
The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-3736
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https://github.com/torvalds/linux/commit/de5494af4815a4c9328536c72741229b7de88e7f
vfio/mbochs: Fix missing error unwind of mbochs_used_mbytes · torvalds/linux@de5494a · GitHubPatch;Third Party Advisory
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https://access.redhat.com/security/cve/CVE-2021-3736
CVE-2021-3736- Red Hat Customer PortalThird Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1995570
1995570 – (CVE-2021-3736) CVE-2021-3736 kernel: uninitialized kernel stack may lead to information disclosureIssue Tracking;Third Party Advisory
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