Memory leak in Linux kernel - CVE-2019-19043
Published: November 27, 2019
Vulnerability identifier: #VU23018
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19043
CWE-ID: CWE-401
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the "i40e_setup_macvlans()" function in "drivers/net/ethernet/intel/i40e/i40e_main.c" file. A remote attacker on the local network can cause a denial of service condition (memory consumption) by triggering "i40e_setup_channel()" failures.
Affected software
Linux kernel
Fedora
kernel
Fedora
kernel
How to mitigate CVE-2019-19043
Install update from vendor's website.
Linux kernel - update to 5.3.12
kernel - addressed in versions 5.3.12-200.fc30, 5.3.12-300.fc31
kernel - addressed in versions 5.3.12-200.fc30, 5.3.12-300.fc31
External References
- https://github.com/torvalds/linux/commit/27d461333459d282ffa4a2bdb6b215a59d493a8f
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/