Description
In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.
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 | 3.16.57-1 | DLA-1422-1 |
| Debian 8 | linux-4.9 | 4.9.110-1~deb8u1 | DLA-1423-1 |
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 | 4.15.0-33.36 | USN-3752-1 |
| Ubuntu 18.04 LTS | linux-aws +1 | 4.15.0-1020.20 | USN-3752-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.15.0-1022.23 | USN-3752-3 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1018.19 | USN-3752-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1017.20 | USN-3752-3 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1021.23 | USN-3752-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-134.160 | USN-3753-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1066.76 | USN-3753-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1022.22~16.04.1 | USN-3752-3 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1018.19~16.04.2 | USN-3752-3 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-33.36~16.04.1 | USN-3752-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1032.38 | USN-3753-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1095.103 | USN-3753-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1099.104 | USN-3753-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | linux | 3.13.0-157.207 | USN-3754-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1028.31 | USN-3753-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-134.160~14.04.1 | USN-3753-2 |
| 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 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-docs +6 | 4.12.14-25.3.1 | SUSE-SU-2018:2092-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.138-94.39.1 | SUSE-SU-2018:1772-1 |
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.68.1 | SUSE-SU-2018:2332-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.43.1 | SUSE-SU-2018:2366-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.138-94.39.1 | SUSE-SU-2018:1772-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.68.1 | SUSE-SU-2018:2332-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.138-3.14.1 | SUSE-SU-2018:1816-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.33.1 | SUSE-SU-2018:2637-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.3.1 | SUSE-SU-2018:2092-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_1 | 1-1.3.1 | SUSE-SU-2018:2092-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_14 | 1-4.5.1 | SUSE-SU-2018:1772-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.43.1 | SUSE-SU-2018:2366-1 |
Advisories 14
- USN-3754-1 linux vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3752-1 linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3752-3 linux-azure, linux-oem, linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3752-2 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3753-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1422-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1423-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3753-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:2092-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2366-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2332-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1772-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1816-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2018:2637-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- USN-3752-2 vendor-advisory
- [debian-lts-announce] 20180714 [SECURITY] [DLA 1422-1] linux security update mailing-list
- 104452 vdb-entry
- USN-3752-3 vendor-advisory
- [debian-lts-announce] 20180715 [SECURITY] [DLA 1422-2] linux security update mailing-list
- USN-3753-2 vendor-advisory
- USN-3754-1 vendor-advisory
- [debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package mailing-list
- https://marc.info/?l=linux-kernel&m=152814391530549&w=2
- https://lkml.org/lkml/2018/6/2/2
- USN-3752-1 vendor-advisory
- USN-3753-1 vendor-advisory