# CVE-2022-50497: linux: In the Linux kernel, the following vulnerability has been resolved:  binfmt_misc: fix shift-out-of-bounds in check_sp...

CVE-2022-50497 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50497, released October 4, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50497
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  binfmt_misc: fix shift-out-of-bounds in check_special_flags  UBSAN reported a shift-out-of-bounds warning:   left shift of 1 by 31 places cannot be represented in type 'int'  Call Trace:   <TASK>   __dump_stack lib/dump_stack.c:88 [inline]   dump_stack_lvl+0x8d/0xcf lib/dump_stack.c:106   ubsan_epilogue+0xa/0x44 lib/ubsan.c:151   __ubsan_handle_shift_out_of_bounds+0x1e7/0x208 lib/ubsan.c:322   check_special_flags fs/binfmt_misc.c:241 [inline]   create_entry fs/binfmt_misc.c:456 [inline]   bm_register_write+0x9d3/0xa20 fs/binfmt_misc.c:654   vfs_write+0x11e/0x580 fs/read_write.c:582   ksys_write+0xcf/0x120 fs/read_write.c:637   do_syscall_x64 arch/x86/entry/common.c:50 [inline]   do_syscall_64+0x34/0x80 arch/x86/entry/common.c:80   entry_SYSCALL_64_after_hwframe+0x63/0xcd  RIP: 0033:0x4194e1  Since the type of Node's flags is unsigned long, we should define these macros with same type too.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50497](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50497.md) | Oct 4, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50497](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50497.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50497](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50497.md) | Oct 4, 2025 |

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