CVE-2025-68255: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing
Vulnerability summary
CVE-2025-68255 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 30.8% of scored vulnerabilities.
Not severe (CVSS 8.8, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 46 · Related 44Timeline
- 16-12-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
31%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.37% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu155 products
- linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-19.19
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian1 product
- linux< 6.1.162-1 | < 6.12.63-1 | < 6.17.12-1
Linux1 product
- linux≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 49b7806851f93fd342838c93f4f765e0cc5029b0 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 4445adedae770037078803d1ce41f9e88a1944b6 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < d129dc2a5d59b4d9cd2cc0b6eeb04df8461199f0 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 34620eb602aa432f090b2b784ee5c5070fb16cf9 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 61871c83259a511980ec2664964cecc69005398b | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 25411f5fcf5743131158f337c99c2bbf3f8477f5 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < e841d8ea722315b781c4fc5bf4f7670fbca88875 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 6ef0e1c10455927867cac8f0ed6b49f328f8cf95 | 4.12
3 vendors · 157 products
