Description
The xfs_dinode_verify function in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.16.3 allows local users to cause a denial of service (xfs_ilock_attr_map_shared invalid pointer dereference) via a crafted xfs image.
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 | 4.16.5-1 | — |
| Debian 13 | linux | 4.16.5-1 | — |
| Debian 12 | linux | 4.16.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-azure-fde | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-121.123 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1086.91 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1011.11~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1099.110 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1020.20~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1086.98 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1072.76 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1077.79 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1099.109 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1057.62 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1073.78 | USN-4578-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1089.98 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-193.224 | USN-4579-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1117.131 | USN-4579-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1085.90~16.04.1 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1098.109~16.04.1 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1086.98~16.04.1 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-120.122~16.04.1 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1082.91 | USN-4579-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1056.61~16.04.1 | USN-4578-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1141.151 | USN-4579-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1145.155 | USN-4579-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1081.85 | USN-4579-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1098.109~14.04.1 | USN-4578-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-193.224~14.04.1 | USN-4579-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | kernel-alt +1 | 4.14.0-115.el7a | RHSA-2018:2948 |
| RHEL 7 | kernel-rt +10 | 3.10.0-957.rt56.910.el7 | RHSA-2018:3096 |
| RHEL 7 | perf +18 | 3.10.0-957.el7 | RHSA-2018:3083, RHSA-2018:2948 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 5.14.6-1.4 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:10728-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +8 | 4.14.35-1818.5.4.el7uek | ELSA-2019-4509, ELSA-2018-4304 |
| Oracle Linux 7 | perf +12 | 3.10.0-957.el7 | ELSA-2019-4509, ELSA-2018-4304, ELSA-2018-3083 |
Advisories 10
- USN-4578-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-4579-1 linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2018:3083 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:3096 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 8, 2026
- RHSA-2018:2948 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10728-1 kernel-devel-5.14.6-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2019-4509 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jan 15, 2019
- ELSA-2018-4304 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 11, 2018
- ELSA-2018-3083 Important: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 5, 2018
References
- RHSA-2018:3083 vendor-advisory
- https://www.spinics.net/lists/linux-xfs/msg17215.html
- RHSA-2018:2948 vendor-advisory
- 103960 vdb-entry
- https://bugzilla.kernel.org/show_bug.cgi?id=199377
- RHSA-2018:3096 vendor-advisory
- USN-4578-1 vendor-advisory
- USN-4579-1 vendor-advisory