Description
An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a local attacker with a special privilege to crash the system or leak internal information.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Affects Linux kernel v5.8 or later | — |
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 | 5.17.3-1 | — |
| Debian 13 | linux | 5.17.3-1 | — |
| Debian 12 | linux | 5.17.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | linux-azure-fde-5.19 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.11 +2 | 5.11.0-1025.27~20.04.1 | USN-5219-1 |
| Ubuntu 20.04 LTS | linux-aws-5.13 | 5.13.0-1011.12~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.13 | 5.13.0-1012.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.11 | 5.11.0-1026.29~20.04.1 | USN-5219-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.13 | 5.13.0-1012.15~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.11 | 5.11.0-46.51~20.04.1 | USN-5219-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.13 | 5.13.0-25.26~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oem-5.10 | 5.10.0-1055.58 | USN-5219-1 |
| Ubuntu 20.04 LTS | linux-oem-5.13 | 5.13.0-1026.32 | USN-5218-1 |
| Ubuntu 20.04 LTS | linux-oem-5.14 | 5.14.0-1018.19 | USN-5217-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.13 | 5.13.0-1015.19~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv +9 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.11 | 5.11.0-1026.28~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-553.rt7.342.el8_10 | RHSA-2024:2950 |
| RHEL 8 | perf +26 | 4.18.0-553.el8_10 | RHSA-2024:3138 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Hypervisor 4 | perf +2 | 4.18.0-372.91.1.el8_6 | RHSA-2024:0724 |
| RHEL 8.8 EUS | perf +26 | 4.18.0-477.81.1.el8_8 | RHSA-2024:10262 |
| RHEL 8.6 EUS | perf +26 | 4.18.0-372.91.1.el8_6 | RHSA-2024:0724 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-rt +11 | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.el8_10 | ALSA-2024:3138 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-553.el8_10 | RXSA-2024:3138, RLSA-2024:3138 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.rt7.342.el8_10 | RLSA-2024:2950 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +4 | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| SLES 15 SP5 | kernel-syms +1 | 5.14.21-150500.55.80.1 | SUSE-SU-2024:3483-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.7.1 | SUSE-SU-2022:2615-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.11.1.150400.24.3.6 | SUSE-SU-2022:2520-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_19 | 1-150500.11.3.2 | SUSE-SU-2024:3483-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_1 | 1-150400.9.5.3 | SUSE-SU-2022:2520-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +3 | 5.14.21-150500.55.80.1 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.5 | kernel-64kb +6 | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
| openSUSE Leap 15.4 | dtb-aarch64 +10 | 5.14.21-150400.24.11.1 | SUSE-SU-2022:2520-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.7.1 | SUSE-SU-2022:2615-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.11.1.150400.24.3.6 | SUSE-SU-2022:2520-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.5 | kernel-default | 5.14.21-150500.55.80.2 | SUSE-SU-2024:3483-1 |
| openSUSE Leap Micro 5.5 | kernel-default-base | 5.14.21-150500.55.80.2.150500.6.35.6 | SUSE-SU-2024:3483-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-553.el8_10 | ELSA-2024-3138 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
tr3ee/CVE-2021-4204 ★ 62 · Feb 24, 2022
CVE-2021-4204: Linux Kernel eBPF Local Privilege Escalation
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 17
- ALSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:2950 Moderate: kernel-rt security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:2950 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:3138 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:10262 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:0724 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-5218-1 linux-oem-5.13 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- RXSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · May 29, 2026
- USN-5217-1 linux-oem-5.14 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-5219-1 linux, linux-aws, linux-aws-5.11, linux-azure, linux-azure-5.11, linux-gcp, linux-gcp-5.11, linux-hwe-5.11, linux-kvm, linux-oem-5.10, linux-oracle, linux-oracle-5.11, linux-raspi vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- RLSA-2024:2950 Moderate: kernel-rt security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- SUSE-SU-2024:3483-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2520-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2615-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-0790 Linux Kernel: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Mar 30, 2025
- ELSA-2024-3138 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 23, 2024