Description
kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service.
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 | 4.14.7-1 | — |
| Debian 13 | linux | 4.14.7-1 | — |
| Debian 12 | linux | 4.14.7-1 | — |
| Debian 9 | linux | 4.9.65-3+deb9u1 | DSA-4073-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 16.04 LTS | linux | 4.4.0-119.143 | USN-3619-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1054.63 | USN-3619-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.13.0-1005.7 | USN-3523-2 |
| Ubuntu 16.04 LTS | linux-gcp | 4.13.0-1006.9 | USN-3523-2 |
| Ubuntu 16.04 LTS | linux-hwe | 4.13.0-32.35~16.04.1 | USN-3523-2 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1020.25 | USN-3619-1 |
| Ubuntu 16.04 LTS | linux-oem | 4.13.0-1015.16 | USN-3523-2 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1086.94 | USN-3619-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1088.93 | USN-3619-1 |
| Ubuntu 14.04 LTS | linux-aws | 4.4.0-1016.16 | USN-3619-2 |
| Ubuntu 14.04 LTS | linux-lts-xenial | 4.4.0-119.143~14.04.1 | USN-3619-2 |
Show 1 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 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-default +1 | 4.4.114-94.11.3 | SUSE-SU-2021:3935-1, SUSE-SU-2018:0383-1 |
| SLES 12 SP3 | kernel-docs | 4.4.114-94.11.4 | SUSE-SU-2018:0383-1 |
| SLES 12 SP3 | kernel-syms +1 | 4.4.114-94.11.2 | SUSE-SU-2021:3935-1, SUSE-SU-2018:0383-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_41 | 1-4.3.1 | SUSE-SU-2021:3935-1 |
| SLES 12 SP2 | kernel-docs | 4.4.114-92.64.2 | SUSE-SU-2018:0416-1 |
| SLES 12 SP2 | kernel-syms +3 | 4.4.114-92.64.1 | SUSE-SU-2018:0416-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP3 | kernel-default | 4.4.114-94.11.3 | SUSE-SU-2021:3935-1, SUSE-SU-2018:0383-1 |
| SLES for SAP 12 SP3 | kernel-syms +1 | 4.4.114-94.11.2 | SUSE-SU-2021:3935-1, SUSE-SU-2018:0383-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_41 | 1-4.3.1 | SUSE-SU-2021:3935-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.114-92.64.1 | SUSE-SU-2018:0416-1 |
| SLE Real Time 12 SP3 | kernel-rt +3 | 4.4.120-3.8.1 | SUSE-SU-2018:0986-1 |
| SLE Real Time 12 SP2 | kernel-rt +3 | 4.4.114-27.1 | SUSE-SU-2018:0482-1 |
| SLE Live Patching 12 SP3 | kgraft-patch-SLE12-SP3_Update_8 | 1-4.3.5 | SUSE-SU-2018:0383-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_18 | 1-3.3.2 | SUSE-SU-2018:0416-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.150.1 | SUSE-SU-2021:3935-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_41 | 1-4.3.1 | SUSE-SU-2021:3935-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.150.1 | SUSE-SU-2021:3935-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_41 | 1-4.3.1 | SUSE-SU-2021:3935-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.150.1 | SUSE-SU-2021:3935-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_41 | 1-4.3.1 | SUSE-SU-2021:3935-1 |
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 11
- USN-3523-2 linux-hwe, linux-azure, linux-gcp, linux-oem vulnerabilities Ubuntu Security Notices (USN) · May 29, 2026
- USN-3619-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4073-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3619-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 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-2021:3935-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0986-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0482-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2018:0383-1 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-2018:0416-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://github.com/torvalds/linux/commit/c131187db2d3fa2f8bf32fdf4e9a4ef805168467
- USN-3619-2 vendor-advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467
- https://www.spinics.net/lists/stable/msg206984.html
- 102325 vdb-entry
- DSA-4073 vendor-advisory
- USN-3523-2 vendor-advisory
- https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security
- USN-3619-1 vendor-advisory
- 1040057 vdb-entry