Description
Linux kernel ext4 filesystem is vulnerable to an out-of-bound access in the ext4_ext_drop_refs() function when operating on a crafted ext4 filesystem image.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| [UNKNOWN] | kernel | — | — |
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 | 3.16.59-1 | DLA-1529-1 |
| 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 | 4.15.0-44.47 | USN-3871-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1032.34 | USN-3871-3 |
| Ubuntu 18.04 LTS | linux-azure | 4.15.0-1037.39 | USN-3871-5 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1027.28 | USN-3871-3 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1029.29 | USN-3871-3 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1033.38 | USN-3871-3 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1031.33 | USN-3871-3 |
| 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-aws-hwe | 4.15.0-1032.34~16.04.1 | USN-3871-4 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1037.39~16.04.1 | USN-3871-5 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1027.28~16.04.1 | USN-3871-4 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-45.48~16.04.1 | USN-3871-4 |
| 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-azure | 4.15.0-1037.39~14.04.2 | USN-3871-5 |
| 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | perf +14 | 4.14.0-115.el7a | RHSA-2018:2948 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | kernel-azure +2 | 4.12.14-5.13.1 | SUSE-SU-2018:2450-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-25.13.1 | SUSE-SU-2018:2380-1 |
| SLES 15 | lttng-modules | 2.10.0-5.4.2 | SUSE-SU-2018:2380-1 |
| SLES 12 SP3 | kernel-azure +3 | 4.4.155-4.16.1 | SUSE-SU-2018:2858-1 |
| SLES 12 SP3 | kernel-docs +4 | 4.4.155-94.50.1 | SUSE-SU-2018:2776-1 |
| 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 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-azure +2 | 4.4.155-4.16.1 | SUSE-SU-2018:2858-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.155-94.50.1 | SUSE-SU-2018:2776-1 |
| 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 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.147-3.20.1 | SUSE-SU-2018:2596-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-25.13.1 | SUSE-SU-2018:2381-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_17 | 1-4.3.1 | SUSE-SU-2018:2775-1 |
| 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 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 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | dtrace-modules-3.8.13-118.32.1.el6uek | 0.4.5-3.el6 | ELSA-2019-4600 |
| Oracle Linux 7 | dtrace-modules-3.8.13-118.32.1.el7uek | 0.4.5-3.el7 | ELSA-2019-4600 |
| Oracle Linux 7 | kernel-uek +5 | 3.8.13-118.32.1.el7uek | ELSA-2019-4600, ELSA-2019-4575 |
Advisories 24
- WID-SEC-2026-3896 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 13, 2026
- RHSA-2018:2948 Red Hat Security Advisory: kernel-alt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jul 1, 2026
- USN-3754-1 linux vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3871-1 linux vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-3753-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1529-1 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-3871-3 linux-aws, linux-gcp, linux-kvm, linux-oem, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3871-4 linux-hwe, linux-aws-hwe, linux-gcp vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3871-5 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3753-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:2775-1 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-2018:2381-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2450-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2380-1 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-2018:2858-1 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-2018:2776-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:2596-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2019-4600 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 8, 2019
- ELSA-2019-4575 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 12, 2019
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10877
- USN-3753-2 vendor-advisory
- USN-3754-1 vendor-advisory
- USN-3871-5 vendor-advisory
- USN-3871-4 vendor-advisory
- [debian-lts-announce] 20180718 [SECURITY] [DLA 1423-1] linux-4.9 new package mailing-list
- RHSA-2018:2948 vendor-advisory
- USN-3871-1 vendor-advisory
- 106503 vdb-entry
- USN-3753-1 vendor-advisory
- USN-3871-3 vendor-advisory
- 104878 vdb-entry