Description
Xen allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory by not enabling memory and I/O decoding control bits. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-0777.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 4.19.37-1 | — |
| Debian 13 | linux | 4.19.37-1 | — |
| Debian 12 | linux | 4.19.37-1 | — |
| Debian 9 | linux | 4.9.168-1+deb9u5 | DSA-4497-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux-vmware | No fix yet | — |
| Ubuntu 25.10 | linux +8 | No fix yet | — |
| Ubuntu 24.04 LTS | linux-intel +25 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | linux | 4.15.0-60.67 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1047.49 | — |
| Ubuntu 18.04 LTS | linux-gcp +15 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1043.43 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1022.25 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-157.185 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1090.101 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1047.49~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1056.61 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1041.43 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-60.67~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1052.59 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1022.25~16.04.1 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.14 +1 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1015.20 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
Advisories 1
- DSA-4497-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- http://xenbits.xen.org/xsa/advisory-120.html
- 20190813 [SECURITY] [DSA 4497-1] linux security update mailing-list
- DSA-4497 vendor-advisory