CVE-2019-18805
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Linux Kernel
PublishedNov 7, 2019
First seenNov 7, 2019
How to fix
Update
- linux linux_kernel4.4.180, 4.9.172, 4.14.115, 4.19.38, 5.0.11 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.4 ≤ v < 4.4.180, 4.9 ≤ v < 4.9.172, 4.14 ≤ v < 4.14.115, 4.19 ≤ v < 4.19.38, 5.0 ≤ v < 5.0.11, 5.1 | 4.4.180, 4.9.172, 4.14.115, 4.19.38, 5.0.11 |
| opensuse leap | 15.0, 15.1 | — |
| redhat enterprise_linux | 7.0 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp data_availability_services | No range specified | — |
| netapp e-series_santricity_os_controller | 11.0.0 ≤ v ≤ 11.60.3 | — |
| netapp hci_management_node | No range specified | — |
| netapp solidfire | No range specified | — |
| netapp steelstore_cloud_integrated_storage | No range specified | — |
| netapp hci_compute_node | No range specified | — |
| netapp hci_storage_node | No range specified | — |
| broadcom fabric_operating_system | No range specified | — |
| netapp aff_a700s_firmware | No range specified | — |
| netapp fas8300_firmware | No range specified | — |
| netapp fas8700_firmware | No range specified | — |
| netapp aff_a400_firmware | No range specified | — |
| netapp h610s_firmware | No range specified | — |
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