staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser (Linux Linux)

CVE-2025-68256
HIGH 8.8

At a glance

Source
NVD
EPSS
EPSS 0.27 % · percentile 20 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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.

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1HIGH 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 9829c6e1b2e4180fd18315252ad6faeab6128076 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b977eb31802817f4a37da95bf16bfdaa1eeb5fc2 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 30c558447e90935f0de61be181bbcedf75952e00 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a54e2b2db1b7de2e008b4f62eec35aaefcc663c5 ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < df191dd9f4c7249d98ada55634fa8ac19089b8cb ; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b < c0d93d69e1472ba75b78898979b90a98ba2a2501
Linux · Linuxaffected 4.12 ; unaffected 0 < 4.12 ; unaffected 5.15.203 ≤ 5.15.* ; unaffected 6.1.160 ≤ 6.1.* ; unaffected 6.6.120 ≤ 6.6.* ; unaffected 6.12.62 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD