# CVE-2022-50581: linux: In the Linux kernel, the following vulnerability has been resolved:  hfs: fix OOB Read in __hfs_brec_find  Syzbot rep...

CVE-2022-50581 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50581, released October 22, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50581
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 22, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  hfs: fix OOB Read in __hfs_brec_find  Syzbot reported a OOB read bug:  ================================================================== BUG: KASAN: slab-out-of-bounds in hfs_strcmp+0x117/0x190 fs/hfs/string.c:84 Read of size 1 at addr ffff88807eb62c4e by task kworker/u4:1/11 CPU: 1 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.0-rc6-syzkaller-00308-g644e9524388a #0 Workqueue: writeback wb_workfn (flush-7:0) Call Trace:  <TASK>  __dump_stack lib/dump_stack.c:88 [inline]  dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106  print_address_description+0x74/0x340 mm/kasan/report.c:284  print_report+0x107/0x1f0 mm/kasan/report.c:395  kasan_report+0xcd/0x100 mm/kasan/report.c:495  hfs_strcmp+0x117/0x190 fs/hfs/string.c:84  __hfs_brec_find+0x213/0x5c0 fs/hfs/bfind.c:75  hfs_brec_find+0x276/0x520 fs/hfs/bfind.c:138  hfs_write_inode+0x34c/0xb40 fs/hfs/inode.c:462  write_inode fs/fs-writeback.c:1440 [inline]  If the input inode of hfs_write_inode() is incorrect: struct inode   struct hfs_inode_info     struct hfs_cat_key       struct hfs_name         u8 len # len is greater than HFS_NAMELEN(31) which is the maximum length of an HFS filename  OOB read occurred: hfs_write_inode()   hfs_brec_find()     __hfs_brec_find()       hfs_cat_keycmp()         hfs_strcmp() # OOB read occurred due to len is too large  Fix this by adding a Check on len in hfs_write_inode() before calling hfs_brec_find().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.4-1 | [DEBIAN-CVE-2022-50581](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50581.md) | Oct 22, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.4-1 | [DEBIAN-CVE-2022-50581](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50581.md) | Oct 22, 2025 |
| Linux | linux Debian 14 | 6.1.4-1 | [DEBIAN-CVE-2022-50581](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50581.md) | Oct 22, 2025 |

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