Buffer overflow in Linux Linux_kernel
CVE-2021-42739
The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (35.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- Oracle Communications_cloud_native_core_binding_support_function — versions 22.1.3
- Oracle Communications_cloud_native_core_network_exposure_function — versions 22.1.1
- Oracle Communications_cloud_native_core_policy — versions 22.2.0
- Starwindsoftware Starwind_san_\&_nas — versions v8r12
- Starwindsoftware Starwind_virtual_san — versions v8r13
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 33, 34, 35
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org (Third Party Advisory, Mitigation, Issue Tracking)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-42739?
- CVE-2021-42739 is a medium-severity vulnerability in Linux Linux_kernel, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2021-10-20.
- How severe is CVE-2021-42739?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2021-42739 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.