High

CVE-2025-68255 — staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow. Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow. This prevents kernel stack corruption triggered by malformed association requests.

Published Dec 16, 2025 · Updated Oct 14, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · 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 0.4% (30-day exploitation probability)+4
Technical severity (high)+6

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

0.37%

ahead of 29% of scored CVEs · Oct 14, 2026

Affects

Linux

CVSS base

8.8

High · 3 source(s)

Remediation

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

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

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).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
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	≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 49b7806851f93fd342838c93f4f765e0cc5029b0≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 4445adedae770037078803d1ce41f9e88a1944b6≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 34620eb602aa432f090b2b784ee5c5070fb16cf9≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 61871c83259a511980ec2664964cecc69005398b≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 25411f5fcf5743131158f337c99c2bbf3f8477f5≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < e841d8ea722315b781c4fc5bf4f7670fbca88875≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 6ef0e1c10455927867cac8f0ed6b49f328f8cf95 and 1 more version 4.12	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

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

Attack vector

Adjacent

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

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
8.8	CVSS 3.1	High	2.8	5.9	416baaa9-dc9f-4396-8d5f-8c081fb06d67 via NIST National Vulnerability Database
8.8	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
8.8	CVSS 3.1	High	—	—	Linux via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: 416baaa9-dc9f-4396-8d5f-8c081fb06d67)

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 0.37%

Detection

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

Not enough vector or weakness data: use the affected application’s logs as a starting point.

application logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · linux/linux
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
CVSS changed · 8.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 13, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 13, 2026 · NIST National Vulnerability Database
2025
CVE published
Dec 16, 2025 · Linux

Source activity

Repeated readings are counted rather than listed.

1× References added · Oct 14, 2026 – Oct 14, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

10 on the record

git.kernel.org/stable/c/34620eb602aa432f090b2b784ee5c5070fb16cf9
NIST National Vulnerability Database
git.kernel.org/stable/c/d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0
NIST National Vulnerability Database
github.com/advisories/GHSA-prq3-3cx6-vrj4
GitHub Security Advisories
git.kernel.org/stable/c/4445adedae770037078803d1ce41f9e88a1944b6
NIST National Vulnerability Database
git.kernel.org/stable/c/25411f5fcf5743131158f337c99c2bbf3f8477f5
NIST National Vulnerability Database
git.kernel.org/stable/c/6ef0e1c10455927867cac8f0ed6b49f328f8cf95
NIST National Vulnerability Database
git.kernel.org/stable/c/61871c83259a511980ec2664964cecc69005398b
NIST National Vulnerability Database
git.kernel.org/stable/c/49b7806851f93fd342838c93f4f765e0cc5029b0
NIST National Vulnerability Database
git.kernel.org/stable/c/e841d8ea722315b781c4fc5bf4f7670fbca88875
NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2025-68255
GitHub Security Advisories

Elsewhere on this site

Linux
every CVE for this vendor

Related CVEs (same products)

Critical CVE-2026-99999 ipv4: validate checksum_start before completing checksum 7h
Unknown CVE-2026-98432 ipv4: free inet_opt and ireq_opt after an RCU grace period 7h
Unknown CVE-2026-98425 wifi: mac80211: don't warn when an IBSS has no channel to scan 1d
Unknown CVE-2026-98424 wifi: cfg80211: undo netns switch if renaming the wiphy fails 1d
Unknown CVE-2026-98426 wifi: mwifiex: fix IRQ leak using wrong index in MSI-X error path 1d
Unknown CVE-2026-98427 net/sched: codel: bound the dropping loop per dequeue call 1d

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 fixed version, patch or mitigation documented.
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-2025-68255 is "staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing", rated High. It affects Linux (Linux); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. EPSS 0.37% 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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