Description
In the Linux kernel before 4.20.5, attackers can trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by a "service ipmievd restart" loop.
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 | 4.19.20-1 | — |
| Debian 13 | linux | 4.19.20-1 | — |
| Debian 12 | linux | 4.19.20-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | linux-azure | 4.18.0-1014.14~18.04.1 | USN-3930-2 |
| Ubuntu 18.04 LTS | linux-gcp-edge | 4.18.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe | 4.18.0-17.18~18.04.1 | USN-3930-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-80.1.2.el8_0 | RHSA-2019:1167 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.4.1 | SUSE-SU-2019:1550-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.27.1 | SUSE-SU-2019:1240-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.17.1 | SUSE-SU-2019:1244-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.12.1 | SUSE-SU-2019:1242-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.16.1 | SUSE-SU-2019:1241-1 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.12.1 | SUSE-SU-2019:1242-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.16.1 | SUSE-SU-2019:1241-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.4.1 | SUSE-SU-2019:1550-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_1 | 1-3.3.1 | SUSE-SU-2019:1550-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.17.1 | SUSE-SU-2019:1244-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_10 | 1-1.3.1 | SUSE-SU-2019:1244-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_4 | 1-6.3.1 | SUSE-SU-2019:1241-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.8.1 | SUSE-SU-2019:2430-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.0 | kernel-docs +8 | 4.12.14-lp150.12.61.1 | openSUSE-SU-2019:1404-1 |
Advisories 9
- USN-3930-2 linux-hwe, linux-azure vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2019:1167 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- SUSE-SU-2019:1242-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1550-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1240-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2430-1 Security update for kernel-source-rt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:1244-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1404-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 107145 vdb-entry
- https://github.com/torvalds/linux/commit/77f8269606bf95fcb232ee86f6da80886f1dfae8
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.5
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=77f8269606bf95fcb232ee86f6da80886f1dfae8
- https://security.netapp.com/advisory/ntap-20190327-0002/
- USN-3930-1 vendor-advisory
- USN-3930-2 vendor-advisory
- openSUSE-SU-2019:1404 vendor-advisory