Description
In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
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 | 4.17.3-1 | — |
| Debian 13 | linux | 4.17.3-1 | — |
| Debian 12 | linux | 4.17.3-1 | — |
| Debian 8 | linux | 3.16.64-1 | DLA-1731-1 |
| Debian 8 | linux-4.9 | 4.9.144-3.1~deb8u1 | DLA-1715-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-gcp-6.11 +4 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-43.46 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1031.33 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.15.0-1036.38 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1026.27 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1028.28 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1030.35 | USN-3847-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1030.32 | USN-3847-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-141.167 | USN-3848-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1074.84 | USN-3848-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1031.33~16.04.1 | USN-3847-2 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1036.38~16.04.1 | USN-3847-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1026.27~16.04.1 | USN-3847-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-43.46~16.04.1 | USN-3847-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1039.45 | USN-3848-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1102.110 | USN-3848-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1106.111 | USN-3848-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-164.214 | USN-3849-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1037.40 | USN-3848-2 |
| Ubuntu 14.04 LTS | linux-azure | 4.15.0-1036.38~14.04.2 | USN-3847-3 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-141.167~14.04.1 | USN-3848-2 |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1008.10 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-azure | 4.4.162-4.19.2 | SUSE-SU-2019:0095-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.162-94.69.2 | SUSE-SU-2018:3689-1 |
| SLES 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES 12 SP3 | lttng-modules | 2.7.1-8.6.1 | SUSE-SU-2018:3689-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.101.1 | SUSE-SU-2019:0439-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_27 | 1-3.3.1 | SUSE-SU-2019:0439-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
| SLES 12 | kernel-ec2 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-azure | 4.4.162-4.19.2 | SUSE-SU-2019:0095-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.162-94.69.2 | SUSE-SU-2018:3689-1 |
| SLES for SAP 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES for SAP 12 SP3 | lttng-modules | 2.7.1-8.6.1 | SUSE-SU-2018:3689-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.101.1 | SUSE-SU-2019:0439-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_27 | 1-3.3.1 | SUSE-SU-2019:0439-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.110.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_33 | 1-2.3.1 | SUSE-SU-2019:1289-1 |
| SLES for SAP 12 SP1 | lttng-modules | 2.7.0-4.4.1 | SUSE-SU-2019:1289-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.162-3.29.1 | SUSE-SU-2018:3773-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_21 | 1-4.5.2 | SUSE-SU-2018:3688-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.101.1 | SUSE-SU-2019:0439-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_27 | 1-3.3.1 | SUSE-SU-2019:0439-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.101.1 | SUSE-SU-2019:0439-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_27 | 1-3.3.1 | SUSE-SU-2019:0439-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.23.1.el7uek | ELSA-2018-4299 |
Advisories 17
- 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
- USN-3849-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3847-1 linux, linux-aws, linux-azure, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3848-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1731-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1715-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3847-2 linux-hwe, linux-aws-hwe, linux-azure, linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3847-3 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3848-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2019:1289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3688-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3689-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0439-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2018:3773-1 Security update for the Linux RT Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:0095-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2018-4299 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 6, 2018
References
- USN-3848-2 vendor-advisory
- USN-3847-1 vendor-advisory
- USN-3847-2 vendor-advisory
- USN-3849-1 vendor-advisory
- USN-3849-2 vendor-advisory
- USN-3848-1 vendor-advisory
- USN-3847-3 vendor-advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1105025
- 105753 vdb-entry
- https://bugzilla.kernel.org/show_bug.cgi?id=199119
- [debian-lts-announce] 20190315 [SECURITY] [DLA 1715-1] linux-4.9 security update mailing-list
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473c
- https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473c
- [debian-lts-announce] 20190327 [SECURITY] [DLA 1731-1] linux security update mailing-list
- [debian-lts-announce] 20190401 [SECURITY] [DLA 1731-2] linux regression update mailing-list