Description
An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer overflow.
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 | 5.14.6-1 | — |
| Debian 13 | linux | 5.14.6-1 | — |
| Debian 12 | linux | 5.14.6-1 | — |
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 | 5.4.0-84.94 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1056.59 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1058.60 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1019.22 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1052.56 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1052.55 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1023.24 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1046.48 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1054.58 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1043.47 | — |
| Ubuntu 20.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-156.163 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1111.118 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1056.59~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1123.136 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1058.60~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1027.32 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1108.122 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1052.56~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-84.94~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1099.101 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1080.88 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1054.58~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1043.47~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1095.101 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1112.121 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1033.38 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2053.55 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2035.39 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1069.78 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2018.20 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1111.118~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1123.136~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1108.122~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-156.163~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1080.88~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux +2 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1123.136~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-513.5.1.rt7.307.el8_9 | RHSA-2023:6901 |
| RHEL 8 | perf +26 | 4.18.0-513.5.1.el8_9 | RHSA-2023:7077 |
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 | 4.18.0-477.51.1.el8_8 | RHSA-2024:1404 |
| 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 | perf +24 | 4.18.0-513.5.1.el8_9 | ALSA-2023:7077 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.148.1.150200.9.71.1 | SUSE-SU-2023:1800-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.148.1 | SUSE-SU-2023:1800-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-150100.197.142.1 | SUSE-SU-2023:1848-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.130.1 | SUSE-SU-2023:1801-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.156.1 | SUSE-SU-2023:1803-1 |
| SLES 12 SP4 | drbd | 9.0.14+git.62f906cf-4.26.2 | SUSE-SU-2023:2232-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.125.1 | SUSE-SU-2023:2232-1 |
Show 24 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.205.1 | SUSE-SU-2023:2805-1 |
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.148.1.150200.9.71.1 | SUSE-SU-2023:1800-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.148.1 | SUSE-SU-2023:1800-1 |
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.142.1 | SUSE-SU-2023:1848-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.130.1 | SUSE-SU-2023:1801-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.156.1 | SUSE-SU-2023:1803-1 |
| SLE Real Time 15 SP3 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLE Real Time 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.121.1 | SUSE-SU-2023:1894-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.124.1 | SUSE-SU-2023:1892-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.124.1 | SUSE-SU-2023:1892-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_31 | 1-150300.7.3.1 | SUSE-SU-2023:1811-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.148.1 | SUSE-SU-2023:1800-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_35 | 1-150200.5.3.1 | SUSE-SU-2023:1800-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-150100.197.142.1 | SUSE-SU-2023:1848-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_39 | 1-150100.3.5.1 | SUSE-SU-2023:1848-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.156.1 | SUSE-SU-2023:1803-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_42 | 1-8.3.1 | SUSE-SU-2023:1803-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.125.1 | SUSE-SU-2023:2232-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_35 | 1-6.5.1 | SUSE-SU-2023:2232-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.148.1.150200.9.71.1 | SUSE-SU-2023:1800-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.148.1 | SUSE-SU-2023:1800-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.142.1 | SUSE-SU-2023:1848-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.124.1 | SUSE-SU-2023:1892-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.125.1 | SUSE-SU-2023:2232-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.125.1 | SUSE-SU-2023:2232-1 |
| SUSE Manager Server 4.2 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SUSE Manager Server 4.2 | kernel-source +3 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SUSE Manager Proxy 4.2 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SUSE Manager Proxy 4.2 | kernel-source +2 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.118.1.150300.18.68.1 | SUSE-SU-2023:1811-1 |
| SUSE Enterprise Storage 7 | kernel-default-base | 5.3.18-150200.24.148.1.150200.9.71.1 | SUSE-SU-2023:1800-1 |
| SUSE Enterprise Storage 7 | kernel-docs +5 | 5.3.18-150200.24.148.1 | SUSE-SU-2023:1800-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 | 5.3.18-150300.59.118.1 | SUSE-SU-2023:1811-1 |
| openSUSE Leap 15.4 | kernel-debug +4 | 4.12.14-150100.197.142.1 | SUSE-SU-2023:1848-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.241-184.433 | 1.0-0.amzn2 | ALAS2-2021-1696 |
| Amazon Linux 2 | perf +8 | 4.14.241-184.433.amzn2 | ALAS2-2021-1696 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-513.5.1.el8_9 | ELSA-2023-7077 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.74.2.el7uek | ELSA-2023-12323 |
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 2 repositories
-
Trinadh465/linux-4.1.15_CVE-2023-28772 ★ 0 · May 11, 2023
-
Satheesh575555/linux-4.1.15_CVE-2023-28772 ★ 0 · May 11, 2023
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 20
- ALSA-2023:7077 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2023:7077 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:1404 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2024:0724 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2023:6901 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- SUSE-SU-2023:1801-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2805-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1800-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1894-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1811-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1803-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1848-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2232-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0745 Linux Kernel: Schwachstelle ermöglicht nicht spezifizierten Angriff BSI CERT-Bund (WID) · Nov 6, 2025
- WID-SEC-2024-1086 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2025
- ALAS2-2021-1696 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 2, 2025
- SUSE-SU-2023:1892-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2023-7077 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 17, 2023
- ELSA-2023-12323 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · May 2, 2023
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
- https://github.com/torvalds/linux/commit/d3b16034a24a112bb83aeb669ac5b9b01f744bb7
- https://lore.kernel.org/lkml/20210625122453.5e2fe304%40oasis.local.home/
- https://lkml.kernel.org/r/20210626032156.47889-1-yun.zhou%40windriver.com
- https://security.netapp.com/advisory/ntap-20230427-0005/