CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2019-18805
Critical (9.8). EPSS 3.5% chance of exploitation in the next 30 days.
An issue was discovered in net/ipv4/sysctl_net_ipv4.c in the Linux kernel before 5.0.11. There is a net/ipv4/tcp_input.c signed integer overflow in tcp_ack_update_rtt() when userspace writes a very large integer to /proc/sys/net/ipv4/tcp_min_rtt_wlen, leading to a denial of service or possibly unspecified other impact, aka CID-19fad20d15a6.
Severity
- EPSS
- 3.5% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
- CWE
- CWE-190
- Published
- Modified
- Record from
- the NVD, synced
Affected
- broadcom:fabric_operating_system
- linux:linux_kernel
- netapp:active_iq_unified_manager
- netapp:aff_a400_firmware
- netapp:aff_a700s_firmware
- netapp:data_availability_services
- netapp:e-series_santricity_os_controller
- netapp:fas8300_firmware
- netapp:fas8700_firmware
- netapp:h610s_firmware
- netapp:hci_compute_node
- netapp:hci_management_node
- netapp:hci_storage_node
- netapp:solidfire
- netapp:steelstore_cloud_integrated_storage
- opensuse:leap
- redhat:enterprise_linux
References
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00035.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00039.html
- https://access.redhat.com/errata/RHSA-2020:0740
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.11
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19fad20d15a6494f47f85d869f00b11343ee5c78