Description
Incorrect buffer length handling in the ncp_read_kernel function in fs/ncpfs/ncplib_kernel.c in the Linux kernel through 4.15.11, and in drivers/staging/ncpfs/ncplib_kernel.c in the Linux kernel 4.16-rc through 4.16-rc6, could be exploited by malicious NCPFS servers to crash the kernel or execute code.
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 | 4.15.17-1 | — |
| Debian 13 | linux | 4.15.17-1 | — |
| Debian 12 | linux | 4.15.17-1 | — |
| Debian 9 | linux | 4.9.88-1 | DSA-4188-1 |
| Debian 8 | linux | 3.16.56-1 | DSA-4187-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | linux | 3.2.101-1 | DLA-1369-1 |
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 16.04 LTS | linux | 4.4.0-127.153 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1060.69 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1018.21 | USN-3653-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1017.21 | USN-3653-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-43.48~16.04.1 | USN-3653-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1026.31 | USN-3654-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1028.31 | USN-3653-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1090.98 | USN-3656-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1093.98 | USN-3656-1 |
| Ubuntu 14.04 LTS | linux | 3.13.0-149.199 | USN-3655-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1022.22 | USN-3654-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-127.153~14.04.1 | USN-3654-2 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 12 SP3 | kernel-docs +3 | 4.4.126-94.22.1 | SUSE-SU-2018:1048-1 |
| SLES 12 SP3 | kernel-source | 4.4.126-94.22.2 | SUSE-SU-2018:1048-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.73.1 | SUSE-SU-2018:1173-2, SUSE-SU-2018:1173-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 | 1-3.3.1 | SUSE-SU-2018:1173-2, SUSE-SU-2018:1173-1 |
| SLES 12 SP1 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SLES 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SLES 12 | kernel-ec2 +4 | 3.12.61-52.128.1 | SUSE-SU-2018:1221-1, SUSE-SU-2018:1220-1 |
| SLES 12 | kgraft-patch-SLE12_Update_34 | 1-1.3.1 | SUSE-SU-2018:1221-1 |
| SLES 11 SP4 | kernel-ec2 +9 | 3.0.101-108.38.1 | SUSE-SU-2018:1080-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 11 SP3 | kernel-ec2 +7 | 3.0.101-0.47.106.22.1 | SUSE-SU-2018:1172-1 |
| SLES for SAP 12 SP3 | kernel-source | 4.4.126-94.22.2 | SUSE-SU-2018:1048-1 |
| SLES for SAP 12 SP3 | kernel-syms +1 | 4.4.126-94.22.1 | SUSE-SU-2018:1048-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.73.1 | SUSE-SU-2018:1173-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_21 | 1-3.3.1 | SUSE-SU-2018:1173-1 |
| SLES for SAP 12 SP1 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SLES for SAP 12 SP1 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SLES for SAP 11 SP4 | kernel-ec2 +8 | 3.0.101-108.38.1 | SUSE-SU-2018:1080-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.128-3.11.1 | SUSE-SU-2018:1217-1 |
| SLE Real Time 11 SP4 | kernel-rt +3 | 3.0.101.rt130-69.24.1 | SUSE-SU-2018:1309-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_11 | 1-4.5.1 | SUSE-SU-2018:1048-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.73.1 | SUSE-SU-2018:1173-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_21 | 1-3.3.1 | SUSE-SU-2018:1173-1 |
| SUSE OpenStack Cloud 6 | kernel-xen +3 | 3.12.74-60.64.88.1 | SUSE-SU-2018:1220-1 |
| SUSE OpenStack Cloud 6 | kgraft-patch-SLE12-SP1_Update_27 | 1-2.3.1 | SUSE-SU-2018:1220-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kernel-ec2 +6 | 3.0.101-0.47.106.22.1 | SUSE-SU-2018:1172-1 |
| SUSE Enterprise Storage 4 | kernel-syms +2 | 4.4.121-92.73.1 | SUSE-SU-2018:1173-1 |
| SUSE Enterprise Storage 4 | kgraft-patch-SLE12-SP2_Update_21 | 1-3.3.1 | SUSE-SU-2018:1173-1 |
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 |
Advisories 20
- USN-3654-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3653-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3655-1 linux vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-3654-1 linux, linux-aws, linux-kvm, vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DSA-4188-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-4187-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1369-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3656-1 linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2018:1221-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1173-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1080-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1217-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1309-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1220-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1173-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:1172-1 Security update for the Linux Kernel 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
- SUSE-SU-2018:1048-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0532 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 11, 2025
References
- DSA-4187 vendor-advisory
- USN-3654-1 vendor-advisory
- 103476 vdb-entry
- DSA-4188 vendor-advisory
- https://www.mail-archive.com/netdev%40vger.kernel.org/msg223373.html
- USN-3653-2 vendor-advisory
- USN-3655-1 vendor-advisory
- USN-3654-2 vendor-advisory
- [debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update mailing-list
- USN-3655-2 vendor-advisory
- USN-3656-1 vendor-advisory
- USN-3653-1 vendor-advisory
- USN-3657-1 vendor-advisory
- [oss-security] 20221227 Re: Details on this supposed Linux Kernel ksmbd RCE mailing-list