Description
In the Linux kernel, the following vulnerability has been resolved:
sched: Fix yet more sched_fork() races
Where commit 4ef0c5c6b5ba ("kernel/sched: Fix sched_fork() access an
invalid sched_task_group") fixed a fork race vs cgroup, it opened up a
race vs syscalls by not placing the task on the runqueue before it
gets exposed through the pidhash.
Commit 13765de8148f ("sched/fair: Fix fault in reweight_entity") is
trying to fix a single instance of this, instead fix the whole class
of issues, effectively reverting this commit.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.15.3 – < 5.15.27, 5.10.80 – < 5.11, 5.14.19 – < 5.15, 5.16 | 5.15.27 |
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 | 5.16.14-1 | — |
| Debian 13 | linux | 5.16.14-1 | — |
| Debian 12 | linux | 5.16.14-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1008.11~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.83.1 | SUSE-SU-2024:3569-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.69.1 | SUSE-SU-2024:3587-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.83.1.150500.6.37.1 | SUSE-SU-2024:3569-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.83.1 | SUSE-SU-2024:3569-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.83.1.150500.6.37.1 | SUSE-SU-2024:3569-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.73.1 | SUSE-SU-2024:3592-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.97.1 | SUSE-SU-2024:3563-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.97.1 | SUSE-SU-2024:3563-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.83.1 | SUSE-SU-2024:3569-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_20 +1 | 1-150500.11.3.1 | SUSE-SU-2024:3592-1, SUSE-SU-2024:3569-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_32 | 1-150400.9.3.1 | SUSE-SU-2024:3547-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.73.1 | SUSE-SU-2024:3592-1 |
| SUSE Manager Server 4.3 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SUSE Manager Server 4.3 | kernel-syms +3 | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
| SUSE Manager Proxy 4.3 | kernel-default-base | 5.14.21-150400.24.136.1.150400.24.66.1 | SUSE-SU-2024:3547-1 |
| SUSE Manager Proxy 4.3 | kernel-syms +2 | 5.14.21-150400.24.136.1 | SUSE-SU-2024:3547-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.69.1 | SUSE-SU-2024:3587-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.73.1 | SUSE-SU-2024:3592-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.83.1 | SUSE-SU-2024:3569-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.83.1.150500.6.37.1 | SUSE-SU-2024:3569-1 |
| openSUSE Leap Micro 5.5 | kernel-rt | 5.14.21-150500.13.73.1 | SUSE-SU-2024:3592-1 |
Advisories 6
- SUSE-SU-2024:3592-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3587-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3547-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3569-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3563-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2024-1958 Linux Kernel: Schwachstelle ermöglicht DoS BSI CERT-Bund (WID) · Oct 10, 2024