vulnerability
Ubuntu: (CVE-2019-20812): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:N/I:N/A:C) | Jun 3, 2020 | Nov 19, 2024 | Sep 5, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Jun 3, 2020
Added
Nov 19, 2024
Modified
Sep 5, 2025
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.
Solutions
ubuntu-upgrade-linuxubuntu-upgrade-linux-awsubuntu-upgrade-linux-aws-fipsubuntu-upgrade-linux-aws-hweubuntu-upgrade-linux-azureubuntu-upgrade-linux-azure-5-3ubuntu-upgrade-linux-azure-fipsubuntu-upgrade-linux-fipsubuntu-upgrade-linux-gcpubuntu-upgrade-linux-gcp-5-3ubuntu-upgrade-linux-gke-4-15ubuntu-upgrade-linux-gke-5-0ubuntu-upgrade-linux-gke-5-3ubuntu-upgrade-linux-hweubuntu-upgrade-linux-kvmubuntu-upgrade-linux-lts-xenialubuntu-upgrade-linux-oemubuntu-upgrade-linux-oem-osp1ubuntu-upgrade-linux-oracleubuntu-upgrade-linux-raspi2ubuntu-upgrade-linux-raspi2-5-3ubuntu-upgrade-linux-snapdragon
References
- CVE-2019-20812
- https://attackerkb.com/topics/CVE-2019-20812
- CWE-400
- URL-https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.7
- URL-https://git.kernel.org/linus/b43d1f9f7067c6759b1051e8ecb84e82cef569fe
- URL-https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe
- URL-https://www.cve.org/CVERecord?id=CVE-2019-20812
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