# CVE-2023-54198: linux: In the Linux kernel, the following vulnerability has been resolved:  tty: fix out-of-bounds access in tty_driver_look...

CVE-2023-54198 is fixed in 77 products on 1 platform, first by ALAS2023-2023-138, released March 20, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-54198
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 20, 2023

## Description

In the Linux kernel, the following vulnerability has been resolved:  tty: fix out-of-bounds access in tty_driver_lookup_tty()  When specifying an invalid console= device like console=tty3270, tty_driver_lookup_tty() returns the tty struct without checking whether index is a valid number.  To reproduce:  qemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \ -kernel ../linux-build-x86/arch/x86/boot/bzImage \ -append "console=ttyS0 console=tty3270"  This crashes with:  [    0.770599] BUG: kernel NULL pointer dereference, address: 00000000000000ef [    0.771265] #PF: supervisor read access in kernel mode [    0.771773] #PF: error_code(0x0000) - not-present page [    0.772609] Oops: 0000 [#1] PREEMPT SMP PTI [    0.774878] RIP: 0010:tty_open+0x268/0x6f0 [    0.784013]  chrdev_open+0xbd/0x230 [    0.784444]  ? cdev_device_add+0x80/0x80 [    0.784920]  do_dentry_open+0x1e0/0x410 [    0.785389]  path_openat+0xca9/0x1050 [    0.785813]  do_filp_open+0xaa/0x150 [    0.786240]  file_open_name+0x133/0x1b0 [    0.786746]  filp_open+0x27/0x50 [    0.787244]  console_on_rootfs+0x14/0x4d [    0.787800]  kernel_init_freeable+0x1e4/0x20d [    0.788383]  ? rest_init+0xc0/0xc0 [    0.788881]  kernel_init+0x11/0x120 [    0.789356]  ret_from_fork+0x22/0x30

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 9 | 0:7.4.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | bpftool amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | bpftool-debuginfo amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-64k RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-devel-matched RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-debug-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-devel-matched RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-64k-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-abi-stablelists RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-devel-matched RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debug-uki-virt RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-debuginfo amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-debuginfo-common-aarch64 amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-debuginfo-common-x86_64 amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-devel amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-devel-matched RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-doc RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-headers amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-libbpf amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-libbpf-devel amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-libbpf-static amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-livepatch-6.1.19-30.43 amzn 2023 | 1.0-0.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-kvm RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-debug-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-kvm RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-rt-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-tools RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-tools amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-tools-debuginfo amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-tools-devel amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | kernel-tools-libs RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-tools-libs-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-uki-virt RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-uki-virt-addons RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-devel RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-devel-matched RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-modules RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-modules-core RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | kernel-zfcpdump-modules-extra RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | libperf RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2023-54198](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54198.md) | Dec 30, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2023-54198](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54198.md) | Dec 30, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2023-54198](https://patchblox.com/security/data/fix/linux/debian-cve-2023-54198.md) | Dec 30, 2025 |
| Linux | perf RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | perf amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | perf-debuginfo amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | python3-perf RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | python3-perf amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | python3-perf-debuginfo amzn 2023 | 6.1.19-30.43.amzn2023 | [ALAS2023-2023-138](https://patchblox.com/security/data/fix/linux/alas2023-2023-138.md) | Mar 20, 2023 |
| Linux | rtla RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |
| Linux | rv RHEL 9 | 0:5.14.0-503.11.1.el9_5 | [RHSA-2024:9315](https://patchblox.com/security/data/fix/linux/rhsa-2024-9315.md) | Nov 12, 2024 |

---

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