# CVE-2022-50403: linux: In the Linux kernel, the following vulnerability has been resolved:  ext4: fix undefined behavior in bit shift for ex...

CVE-2022-50403 is fixed in 47 products on 1 platform, first by RHSA-2023:2458, released May 9, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50403
- Priority: High
- CVSS: 8.0 (Important)
- EPSS: n/a
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 9, 2023

## Description

In the Linux kernel, the following vulnerability has been resolved:  ext4: fix undefined behavior in bit shift for ext4_check_flag_values  Shifting signed 32-bit value by 31 bits is undefined, so changing significant bit to unsigned. The UBSAN warning calltrace like below:  UBSAN: shift-out-of-bounds in fs/ext4/ext4.h:591:2 left shift of 1 by 31 places cannot be represented in type 'int' Call Trace:  <TASK>  dump_stack_lvl+0x7d/0xa5  dump_stack+0x15/0x1b  ubsan_epilogue+0xe/0x4e  __ubsan_handle_shift_out_of_bounds+0x1e7/0x20c  ext4_init_fs+0x5a/0x277  do_one_initcall+0x76/0x430  kernel_init_freeable+0x3b3/0x422  kernel_init+0x24/0x1e0  ret_from_fork+0x1f/0x30  </TASK>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | bpftool RHEL 9 | 0:7.0.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel rocky 8 | 0:4.18.0-553.123.1.el8_10.cloud.0.1 | [RXSA-2024:3138](https://patchblox.com/security/data/fix/linux/rxsa-2024-3138.md) | May 29, 2026 |
| Linux | kernel-64k RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-devel-matched RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-modules RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-modules-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-debug-modules-extra RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-devel-matched RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-modules RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-modules-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-64k-modules-extra RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-abi-stablelists RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-abi-stablelists RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-core RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-debug RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-core RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-debug-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-devel RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-debug-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-devel-matched RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-modules RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-debug-modules RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-modules-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-modules-extra RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-debug-modules-extra RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-debug-uki-virt RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-devel RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-devel-matched RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-doc RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-doc RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-modules RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-modules RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-modules-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-modules-extra RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-modules-extra RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-tools RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-tools RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-tools-libs RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-tools-libs RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-tools-libs-devel RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-tools-libs-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-uki-virt RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-zfcpdump RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-core RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-zfcpdump-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-devel RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-zfcpdump-devel RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-devel-matched RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-modules RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-zfcpdump-modules RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-modules-core RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | kernel-zfcpdump-modules-extra RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | kernel-zfcpdump-modules-extra RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | linux Debian 11.6 (bullseye) | 5.10.178-1 | [CVE-2022-50403](https://patchblox.com/security/data/fix/linux/cve-2022-50403.md) | Sep 18, 2025 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [CVE-2022-50403](https://patchblox.com/security/data/fix/linux/cve-2022-50403.md) | Sep 18, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [CVE-2022-50403](https://patchblox.com/security/data/fix/linux/cve-2022-50403.md) | Sep 18, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [CVE-2022-50403](https://patchblox.com/security/data/fix/linux/cve-2022-50403.md) | Sep 18, 2025 |
| Linux | perf RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | perf RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | python3-perf RHEL 8 | 0:4.18.0-553.el8_10 | [RHSA-2024:3138](https://patchblox.com/security/data/fix/linux/rhsa-2024-3138.md) | May 22, 2024 |
| Linux | python3-perf RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |
| Linux | rtla RHEL 9 | 0:5.14.0-284.11.1.el9_2 | [RHSA-2023:2458](https://patchblox.com/security/data/fix/linux/rhsa-2023-2458.md) | May 9, 2023 |

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