CVE-2025-68256: staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser
Vulnerability summary
CVE-2025-68256 is a high (CVSS 8.8) vulnerability in linux. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 19.7% 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 48 · Related 47Timeline
- 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 out-of-bounds read in rtw_get_ie() parser The Information Element (IE) parser rtw_get_ie() trusted the length byte of each IE without validating that the IE body (len bytes after the 2-byte header) fits inside the remaining frame buffer. A malformed frame can advertise an IE length larger than the available data, causing the parser to increment its pointer beyond the buffer end. This results in out-of-bounds reads or, depending on the pattern, an infinite loop. Fix by validating that (offset + 2 + len) does not exceed the limit before accepting the IE or advancing to the next element. This prevents OOB reads and ensures the parser terminates safely on malformed frames.
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
0.27%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.27% 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.
Ubuntu156 products
- linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-110.110 | < 6.17.0-19.19
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 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, < 9829c6e1b2e4180fd18315252ad6faeab6128076 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < b977eb31802817f4a37da95bf16bfdaa1eeb5fc2 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 30c558447e90935f0de61be181bbcedf75952e00 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < a54e2b2db1b7de2e008b4f62eec35aaefcc663c5 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < df191dd9f4c7249d98ada55634fa8ac19089b8cb | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < c0d93d69e1472ba75b78898979b90a98ba2a2501 | ≥ 554c0a3abf216c991c5ebddcdb2c08689ecd290b, < 154828bf9559b9c8421fc2f0d7f7f76b3683aaed | 4.12
3 vendors · 158 products
