Medium

CVE-2025-38195 — LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset() ERROR INFO: CPU 25 Unable to handle kernel paging request at virtual address 0x0 ... Call Trace: [<900000000023c30c>] huge_pte_offset+0x3c/0x58 [<900000000057fd4c>] hugetlb_follow_page_mask+0x74/0x438 [<900000000051fee8>] __get_user_pages+0xe0/0x4c8 [<9000000000522414>] faultin_page_range+0x84/0x380 [<9000000000564e8c>] madvise_vma_behavior+0x534/0xa48 [<900000000056689c>] do_madvise+0x1bc/0x3e8 [<9000000000566df4>] sys_madvise+0x24/0x38 [<90000000015b9e88>] do_syscall+0x78/0x98 [<9000000000221f18>] handle_syscall+0xb8/0x158 In some cases, pmd may be NULL and rely on NULL as the return value for processing, so it is necessary to determine this situation here.

Published Jul 4, 2025 · Updated Oct 30, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: Linux

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.2% (30-day exploitation probability)+1
Technical severity (medium)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.18%

ahead of 7% of scored CVEs · Oct 30, 2026

Affects

Linux

Linux and 1 more

CVSS base

5.5

Medium · 1 source(s)

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)
Documented patch — git.kernel.org (NIST National Vulnerability Database)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux, Linux Linux Kernel).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux	≥ 34256805720993e37adf6127371a1265aea8376a and < 55a9a7d21309bbea1dd629cf28396521a2803bb3version 6.15≥ 6.14.5 and < 6.15≥ 6.12.26 and < 6.12.35≥ 6.6.89 and < 6.6.95≥ 6.1.136 and < 6.1.191version b49f085cd671addbda4802d6b9382513f7dd0f30≥ bd51834d1cf65a2c801295d230c220aeebf87a73 and < ee084fa96123ede8b0563a1b5a9b23adc43cd50d and 3 more ≥ bd51834d1cf65a2c801295d230c220aeebf87a73 and < b5c7397b7fd125203c60b59860c168ee92291272≥ 51424fd171cee6a33f01f7c66b8eb23ac42289d4 and < 985f086f281b7bbb6644851e63af1a17ffff9277≥ 2ca9380b12711afe95b3589bd82b59623b3c96b3 and < b427d98d55217b53c88643579fbbd8a4c351a105	Vulnerable	CVE Program (cve.org) e CISA ADP
Linux	Linux Kernel	≥ 6.1.136 and < 6.2version 6.15-rc7version 6.15-rc6version 6.15-rc5version 6.15-rc4version 6.15≥ 6.15.1 and < 6.15.4≥ 6.14.5 and < 6.15 and 2 more ≥ 6.12.26 and < 6.12.35≥ 6.6.89 and < 6.6.95	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
5.5	CVSS 3.1	Medium	1.8	3.6	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (score shown at the top: nvd@nist.gov)

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.

endpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 30, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 30, 2026
Fix documented
Oct 30, 2026 · NIST National Vulnerability Database
CVSS changed · 5.5
Oct 30, 2026 · NIST National Vulnerability Database
Source status changed · → Modified
Oct 30, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 30, 2026 · NIST National Vulnerability Database
2025
CVE published
Jul 4, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 30, 2026 – Oct 30, 2026

References

5 on the record

git.kernel.org/stable/c/b5c7397b7fd125203c60b59860c168ee92291272
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/985f086f281b7bbb6644851e63af1a17ffff9277
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/b427d98d55217b53c88643579fbbd8a4c351a105
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/ee084fa96123ede8b0563a1b5a9b23adc43cd50d
Patch, NIST National Vulnerability Database
git.kernel.org/stable/c/55a9a7d21309bbea1dd629cf28396521a2803bb3
NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

High CVE-2026-99216 Drivers: hv: Don't reset VMBus connection state on error/exit paths 3d
Unknown CVE-2026-99215 power: supply: core: prevent unregistering a power supply while a callback runs 3d
Unknown CVE-2026-99207 scsi: target: Disable interrupts while holding delayed_cmd_lock 3d
Unknown CVE-2026-99208 drm/xe/oa: Zero OA buffer at allocation 3d
Unknown CVE-2026-99209 drm/xe: skip eviction of a BO with no resource 3d
Unknown CVE-2026-99210 accel/rocket: clear rdev on device init failure 3d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No CISA SSVC assessment.
No CWE classification.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2025-38195 is "LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()", rated Medium. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.5 describes technical severity. EPSS 0.18% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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