Description
An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+ filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
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 | 4.18.8-1 | — |
| Debian 13 | linux | 4.18.8-1 | — |
| Debian 12 | linux | 4.18.8-1 | — |
| Debian 9 | linux | 4.9.110-3+deb9u5 | DSA-4308-1 |
| Debian 8 | linux | 3.16.59-1 | DLA-1529-1 |
| Debian 8 | linux-4.9 | 4.9.110-3+deb9u5~deb8u1 | DLA-1531-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux-vmware | No fix yet | — |
| 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-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-58.64 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1047.49 | USN-4118-1 |
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1011.11~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +1 | 4.15.0-1040.42 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1042.42 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1050.57 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1021.23 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1043.46 | USN-4094-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1060.66 | USN-4094-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-139.165 | USN-3821-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1072.82 | USN-3821-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1047.49~16.04.1 | USN-4118-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1055.60 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1040.42~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-58.64~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1037.43 | USN-3821-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1021.23~16.04.1 | USN-4094-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1100.108 | USN-3821-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1104.109 | USN-3821-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1034.37 | USN-3821-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-139.165~14.04.1 | USN-3821-2 |
| 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 | 4.4.0-1008.10 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1059.64~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-azure +2 | 4.12.14-5.16.1 | SUSE-SU-2018:3961-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-25.19.1 | SUSE-SU-2018:2980-1 |
| SLES 12 SP3 | kernel-azure | 4.4.162-4.19.2 | SUSE-SU-2019:0095-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.156-94.57.1 | SUSE-SU-2018:3003-1 |
| SLES 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.104.1 | SUSE-SU-2018:2908-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.146.1 | SUSE-SU-2018:3083-1, SUSE-SU-2018:2908-1 |
| SLES 12 | kgraft-patch-SLE12_Update_38 | 1-1.5.1 | SUSE-SU-2018:3083-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.71.1 | SUSE-SU-2018:2879-1 |
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.56.1 | SUSE-SU-2018:3618-1 |
| 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 | 4.4.156-94.57.1 | SUSE-SU-2018:3003-1 |
| SLES for SAP 12 SP3 | kernel-syms-azure +1 | 4.4.162-4.19.1 | SUSE-SU-2019:0095-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP2 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.104.1 | SUSE-SU-2018:2908-2 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_31 | 1-2.5.1 | SUSE-SU-2018:2908-2 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.71.1 | SUSE-SU-2018:2879-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.162-3.26.1 | SUSE-SU-2018:3659-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.36.1 | SUSE-SU-2018:3088-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.19.1 | SUSE-SU-2018:2981-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_5 | 1-1.3.1 | SUSE-SU-2018:2981-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_18 | 1-4.3.5 | SUSE-SU-2018:3004-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE OpenStack Cloud 7 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.56.1 | SUSE-SU-2018:3618-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.95.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_25 | 1-3.4.1 | SUSE-SU-2018:3084-1 |
| SUSE Enterprise Storage 4 | lttng-modules | 2.7.1-9.6.1 | SUSE-SU-2018:3084-1 |
Advisories 21
- USN-4094-1 linux, linux-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-4118-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-3821-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3821-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DSA-4308-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1529-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1531-1 linux-4.9 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2018:2981-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3004-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3618-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3003-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3083-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3084-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3659-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2980-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3088-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2908-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2879-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:3961-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2908-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0095-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- USN-3821-1 vendor-advisory
- 104917 vdb-entry
- https://www.spinics.net/lists/linux-fsdevel/msg130021.html
- [debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update mailing-list
- USN-3821-2 vendor-advisory
- https://bugzilla.kernel.org/show_bug.cgi?id=200297
- DSA-4308 vendor-advisory
- USN-4094-1 vendor-advisory
- USN-4118-1 vendor-advisory