CVE-2021-28951
Fixed in a distro release EPSS <1%
An issue was discovered in fs/io_uring.c in the Linux kernel through 5.11.8. It allows attackers to cause a denial of service (deadlock) because exit may be waiting to park a SQPOLL thread, but concurrently that SQPOLL thread is waiting for a signal to start, aka CID-3ebba796fa25.
Products: linux_kernel, fedoraproject fedora, netapp a250_firmware, netapp aff_500f_firmware, netapp fas_500f_firmware, netapp cloud_backup, netapp solidfire_baseboard_management_controller_firmware
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Arch Linux | linux | 5.11.9.arch1-1 |
| Arch Linux | linux-hardened | 5.11.9.hardened1-1 |
| Arch Linux | linux-lts | 5.10.26-1 |
| Arch Linux | linux-zen | 5.11.9.zen1-1 |
| Debian 12 | linux | 5.10.26-1 |
| Debian 13 | linux | 5.10.26-1 |
| Debian 14 | linux | 5.10.26-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-aws-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure | no fix |
| Ubuntu 18.04 LTS | linux-azure-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-azure-edge | no fix |
| Ubuntu 18.04 LTS | linux-gcp | no fix |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | no fix |
| Ubuntu 18.04 LTS | linux-gcp-edge | no fix |
| Ubuntu 18.04 LTS | linux-gke-4.15 | no fix |
| Ubuntu 18.04 LTS | linux-hwe | no fix |
| Ubuntu 18.04 LTS | linux-hwe-edge | no fix |
| Ubuntu 18.04 LTS | linux-oem | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | no fix |
| Ubuntu 18.04 LTS | linux-oracle-5.3 | no fix |
| Ubuntu 20.04 LTS | linux-aws-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-azure-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-gcp-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1025.26 |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1026.27 |
| Ubuntu 20.04 LTS | linux-oracle-5.8 | no fix |
| Ubuntu 20.04 LTS | linux-raspi2 | no fix |
| Ubuntu 20.04 LTS | linux-riscv | no fix |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | no fix |