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Red Hat: CVE-2019-20812: CVE-2019-20812 kernel: af_packet: TPACKET_V3: invalid timer timeout on error (Multiple Advisories)

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Red Hat: CVE-2019-20812: CVE-2019-20812 kernel: af_packet: TPACKET_V3: invalid timer timeout on error (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
06/03/2020
Created
11/16/2021
Added
11/15/2021
Modified
03/13/2024

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.

Solution(s)

  • redhat-upgrade-kernel

References

  • CVE-2019-20812
  • RHSA-2020:4431

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