Description
The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through 4.8.12 omits a certain check of the dst data structure, which allows remote attackers to cause a denial of service (panic) via a fragmented IPv6 packet.
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 | 4.8.15-1 | — |
| Debian 13 | linux | 4.8.15-1 | — |
| Debian 12 | linux | 4.8.15-1 | — |
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 18.04 LTS | linux-gcp +2 | No fix yet | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-185.215 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1110.121 | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1076.83 | — |
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 | 4.4.0-1042.47 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1074.78 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-185.215~14.04.1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | kernel-docs | 4.4.38-93.3 | SUSE-SU-2017:0181-1 |
| SLES 12 SP2 | kernel-syms +3 | 4.4.38-93.1 | SUSE-SU-2017:0181-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.38-93.1 | SUSE-SU-2017:0181-1 |
| SLE Live Patching 12 | kgraft-patch-SLE12-SP2_Update_4 | 1-2.1 | SUSE-SU-2017:0181-1 |
Advisories 1
- SUSE-SU-2017:0181-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
References
- 94824 vdb-entry
- https://github.com/torvalds/linux/commit/79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2
- [oss-security] 20161208 CVE request: Linux panic on fragemented IPv6 traffic (icmp6_send) mailing-list
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2