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().

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/2344f17c0a89c181ab1a9fef57fd8c3bddfd6e30 cve-icon cve-icon
https://git.kernel.org/stable/c/367296925c7625c3969d2a78d7a3e1dee161beb5 cve-icon cve-icon
https://git.kernel.org/stable/c/4fd3a11804c8877ff11fec59c5c53f1635331e3e cve-icon cve-icon
https://git.kernel.org/stable/c/8c40f2dbae603ef0bd21e87c63f54ec59fd88256 cve-icon cve-icon
https://git.kernel.org/stable/c/8d824e69d9f3fa3121b2dda25053bae71e2460d2 cve-icon cve-icon
https://git.kernel.org/stable/c/90103ccb6e60aa4efe48993d23d6a528472f2233 cve-icon cve-icon
https://git.kernel.org/stable/c/bfc9d8f27f89717431a6aecce42ae230b437433f cve-icon cve-icon
https://git.kernel.org/stable/c/c886c10a6eddb99923b315f42bf63f448883ef9a cve-icon cve-icon
https://git.kernel.org/stable/c/e9e692917c6e10a7066c7a6d092dcdc3d4e329f3 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102209-CVE-2022-50581-cb39@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50581 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50581 cve-icon
History

Thu, 23 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Wed, 22 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
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().
Title hfs: fix OOB Read in __hfs_brec_find
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-22T13:23:33.421Z

Reserved: 2025-10-22T13:20:23.762Z

Link: CVE-2022-50581

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-22T14:15:43.147

Modified: 2025-10-22T21:12:48.953

Link: CVE-2022-50581

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-22T00:00:00Z

Links: CVE-2022-50581 - Bugzilla

cve-icon OpenCVE Enrichment

No data.