CVEvulnerability
CVE-2019-20812
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-06-03
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-400
Description
An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067.
Affected configurations
• linux linux kernel (< 5.4.7)
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html lists.opensuse.org
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.7 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe Patch, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.html www.oracle.com
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html lists.opensuse.org
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html lists.opensuse.org
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.7 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe Patch, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuApr2021.html www.oracle.com