CVE-2026-64441staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()
- 8.8HighCVSS base score
- 0.26%Exploitation in 30 daysEPSS · top 82% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr() Three IE/attribute parsing functions have missing bounds checks. rtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer without verifying that the header bytes (tag + length) are within the remaining buffer before reading them. Additionally, rtw_get_sec_ie() compares the 4-byte WPA OUI at cnt+2 without checking that at least 6 bytes remain, and rtw_get_wapi_ie() compares a 4-byte WAPI OUI at cnt+6 without checking that at least 10 bytes remain. rtw_get_wps_attr() reads wps_ie[0] and wps_ie+2 unconditionally at entry, before verifying that wps_ielen is large enough to contain the 6-byte WPS IE header (element_id + length + 4-byte OUI). Inside the attribute loop, get_unaligned_be16() is called on attr_ptr and attr_ptr+2 without checking that 4 bytes remain in the buffer. Add a cnt+2 bounds check before each loop body in rtw_get_sec_ie() and rtw_get_wapi_ie(), guard each multi-byte comparison with a minimum IE length requirement, add a wps_ielen < 6 early return in rtw_get_wps_attr(), and add a 4-byte bounds check in its inner loop.
Timeline
ID reserved
By Linux
- 6 days later
· 6 days later
Published
- 3 months later
· 3 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < efa27d487abcdec79669a60a6d94d5d6eceb7c1d
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 2ea1ce30ead61589214240e8d33d96310fd613e5
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < b27ecba3196f6c14e3809595ebd69c0c2392512a
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 4b51ee8a40fe47864197d73cc02b191de7a6b072
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 729c4e72563bda0f1725db1db9ea08df06f41d9b
- affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b – < 1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344
- affected 4.12
- unaffected < 4.12
- unaffected 5.15.212 – ≤ 5.15.*
- unaffected 6.1.178 – ≤ 6.1.*
- unaffected 6.6.145 – ≤ 6.6.*
- unaffected 6.12.97 – ≤ 6.12.*
- unaffected 6.18.40 – ≤ 6.18.*
- unaffected 7.1.4 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References7
- https://git.kernel.org/stable/c/efa27d487abcdec79669a60a6d94d5d6eceb7c1d (opens in a new tab)
- https://git.kernel.org/stable/c/2ea1ce30ead61589214240e8d33d96310fd613e5 (opens in a new tab)
- https://git.kernel.org/stable/c/b27ecba3196f6c14e3809595ebd69c0c2392512a (opens in a new tab)
- https://git.kernel.org/stable/c/6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c (opens in a new tab)
- https://git.kernel.org/stable/c/4b51ee8a40fe47864197d73cc02b191de7a6b072 (opens in a new tab)
- https://git.kernel.org/stable/c/729c4e72563bda0f1725db1db9ea08df06f41d9b (opens in a new tab)
- https://git.kernel.org/stable/c/1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-48785 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-64441)Record last updated .