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NVD / CVE Program· CNA Linux

CVE-2025-38713: hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc()

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 13604b1d7e7b125fb428cddbec6b8d92baad25d5, 1ca69007e52a73bd8b84b988b61b319816ca8b01, 291bb5d931c6f3cd7227b913302a17be21cf53b0.

Low priority for now. Upgrade to Linux Linux 13604b1d7e7b125fb428cddbec6b8d92baad25d5, 1ca69007e52a73bd8b84b988b61b319816ca8b01, 291bb5d931c6f3cd7227b913302a17be21cf53b0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc() The hfsplus_readdir() method is capable to crash by calling hfsplus_uni2asc(): [ 667.121659][ T9805] ================================================================== [ 667.122651][ T9805] BUG: KASAN: slab-out-of-bounds in hfsplus_uni2asc+0x902/0xa10 [ 667.123627][ T9805] Read of size 2 at addr ffff88802592f40c by task repro/9805 [ 667.124578][ T9805] [ 667.124876][ T9805] CPU: 3 UID: 0 PID: 9805 Comm: repro Not tainted 6.16.0-rc3 #1 PREEMPT(full) [ 667.124886][ T9805] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 667.124890][ T9805] Call Trace: [ 667.124893][ T9805] <TASK> [ 667.124896][ T9805] dump_stack_lvl+0x10e/0x1f0 [ 667.124911][ T9805] print_report+0xd0/0x660 [ 667.124920][ T9805] ? __virt_addr_valid+0x81/0x610 [ 667.124928][ T9805] ? __phys_addr+0xe8/0x180 [ 667.124934][ T9805] ? hfsplus_uni2asc+0x902/0xa10 [ 667.124942][ T9805] kasan_report+0xc6/0x100 [ 667.124950][ T9805] ? hfsplus_uni2asc+0x902/0xa10 [ 667.124959][ T9805] hfsplus_uni2asc+0x902/0xa10 [ 667.124966][ T9805] ? hfsplus_bnode_read+0x14b/0x360 [ 667.124974][ T9805] hfsplus_readdir+0x845/0xfc0 [ 667.124984][ T9805] ? __pfx_hfsplus_readdir+0x10/0x10 [ 667.124994][ T9805] ? stack_trace_save+0x8e/0xc0 [ 667.125008][ T9805] ? iterate_dir+0x18b/0xb20 [ 667.125015][ T9805] ? trace_lock_acquire+0x85/0xd0 [ 667.125022][ T9805] ? lock_acquire+0x30/0x80 [ 667.125029][ T9805] ? iterate_dir+0x18b/0xb20 [ 667.125037][ T9805] ? down_read_killable+0x1ed/0x4c0 [ 667.125044][ T9805] ? putname+0x154/0x1a0 [ 667.125051][ T9805] ? __pfx_down_read_killable+0x10/0x10 [ 667.125058][ T9805] ? apparmor_file_permission+0x239/0x3e0 [ 667.125069][ T9805] iterate_dir+0x296/0xb20 [ 667.125076][ T9805] __x64_sys_getdents64+0x13c/0x2c0 [ 667.125084][ T9805] ? __pfx___x64_sys_getdents64+0x10/0x10 [ 667.125091][ T9805] ? __x64_sys_openat+0x141/0x200 [ 667.125126][ T9805] ? __pfx_filldir64+0x10/0x10 [ 667.125134][ T9805] ? do_user_addr_fault+0x7fe/0x12f0 [ 667.125143][ T9805] do_syscall_64+0xc9/0x480 [ 667.125151][ T9805] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 667.125158][ T9805] RIP: 0033:0x7fa8753b2fc9 [ 667.125164][ T9805] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 48 [ 667.125172][ T9805] RSP: 002b:00007ffe96f8e0f8 EFLAGS: 00000217 ORIG_RAX: 00000000000000d9 [ 667.125181][ T9805] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa8753b2fc9 [ 667.125185][ T9805] RDX: 0000000000000400 RSI: 00002000000063c0 RDI: 0000000000000004 [ 667.125190][ T9805] RBP: 00007ffe96f8e110 R08: 00007ffe96f8e110 R09: 00007ffe96f8e110 [ 667.125195][ T9805] R10: 0000000000000000 R11: 0000000000000217 R12: 0000556b1e3b4260 [ 667.125199][ T9805] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 667.125207][ T9805] </TASK> [ 667.125210][ T9805] [ 667.145632][ T9805] Allocated by task 9805: [ 667.145991][ T9805] kasan_save_stack+0x20/0x40 [ 667.146352][ T9805] kasan_save_track+0x14/0x30 [ 667.146717][ T9805] __kasan_kmalloc+0xaa/0xb0 [ 667.147065][ T9805] __kmalloc_noprof+0x205/0x550 [ 667.147448][ T9805] hfsplus_find_init+0x95/0x1f0 [ 667.147813][ T9805] hfsplus_readdir+0x220/0xfc0 [ 667.148174][ T9805] iterate_dir+0x296/0xb20 [ 667.148549][ T9805] __x64_sys_getdents64+0x13c/0x2c0 [ 667.148937][ T9805] do_syscall_64+0xc9/0x480 [ 667.149291][ T9805] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 667.149809][ T9805] [ 667.150030][ T9805] The buggy address belongs to the object at ffff88802592f000 [ 667.150030][ T9805] which belongs to the cache kmalloc-2k of size 2048 [ 667.151282][ T9805] The buggy address is located 0 bytes to the right of [ 667.151282][ T9805] allocated 1036-byte region [ffff88802592f000, ffff88802592f40c) [ 667.1 ---truncated---

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Sep 4, 2025
Updated
Oct 19, 2026
EPSS
0.1% · 6th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
7.1
CNA · Linux
7.1
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Follow CVE-2025-38713

When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • debian debian linux11.0
  • linux linux kernel5.5 and later · before 5.10.241
  • linux linux kernel5.11 and later · before 5.15.190
  • linux linux kernel5.16 and later · before 6.1.149
  • linux linux kernel6.2 and later · before 6.6.103
  • linux linux kernel2.6.12.1 and later · before 5.4.297
  • linux linux kernel6.13 and later · before 6.15.11
  • linux linux kernel6.16 and later · before 6.16.2
  • linux linux kernel6.7 and later · before 6.12.43
  • linux linux kernel2.6.12

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 73f7da507d787b489761a0fa280716f84fa32b2faffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 76a4c6636a69d69409aa253b049b1be717a539c5affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before ccf0ad56a779e6704c0b27f555dec847f50c7557affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 13604b1d7e7b125fb428cddbec6b8d92baad25d5affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 291bb5d931c6f3cd7227b913302a17be21cf53b0affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before f7534cbfac0a9ffa4fa17cacc6e8b6446dae24eeaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 6f93694bcbc2c2ab3e01cd8fba2f296faf34e6b9affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 1ca69007e52a73bd8b84b988b61b319816ca8b01affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 94458781aee6045bd3d0ad4b80b02886b9e2219baffected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.153-16.1.153-1
Debian:13linuxbefore 6.12.43-16.12.43-1
Debian:14linuxbefore 6.16.3-16.16.3-1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-defaultbefore 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-docsbefore 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-ec2before 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-sourcebefore 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-symsbefore 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-tracebefore 3.0.101-108.192.13.0.101-108.192.1
SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREkernel-xenbefore 3.0.101-108.192.13.0.101-108.192.1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2025-38711Sep 4, 2025 · smb/server: avoid deadlock when linking with ReplaceIfExists
    22Monitor
  • ← EarlierCVE-2025-38712Sep 4, 2025 · hfsplus: don't use BUG_ON() in hfsplus_create_attributes_file()
    22Monitor
  • Later →CVE-2025-38714Sep 4, 2025 · hfsplus: fix slab-out-of-bounds in hfsplus_bnode_read()
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux13604b1d7e7b125fb428cddbec6b8d92baad25d5Vendor (CNA)
Linux Linux1ca69007e52a73bd8b84b988b61b319816ca8b01Vendor (CNA)
Linux Linux291bb5d931c6f3cd7227b913302a17be21cf53b0Vendor (CNA)
Linux Linux6f93694bcbc2c2ab3e01cd8fba2f296faf34e6b9Vendor (CNA)
Linux Linux73f7da507d787b489761a0fa280716f84fa32b2fVendor (CNA)
Linux Linux76a4c6636a69d69409aa253b049b1be717a539c5Vendor (CNA)
Linux Linux94458781aee6045bd3d0ad4b80b02886b9e2219bVendor (CNA)
Linux Linuxccf0ad56a779e6704c0b27f555dec847f50c7557Vendor (CNA)
Linux Linuxf7534cbfac0a9ffa4fa17cacc6e8b6446dae24eeVendor (CNA)
debian:linux6.1.153-1 · Debian:12Package registry (OSV)
suse:kernel-default3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-docs3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-ec23.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-source3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-syms3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-trace3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)
suse:kernel-xen3.0.101-108.192.1 · SUSE:Linux Enterprise Server 11 SP4 LTSS EXTREME COREPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (11 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records