# CVE-2026-64441: staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr() CVE-2026-64441 is fixed in 31 products on 1 platform, first by DEBIAN-CVE-2026-64441, released August 1, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-64441 - Priority: High - CVSS: 8.8 (Moderate) - EPSS: 0.0026 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jul 25, 2026 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64441 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | bpftool ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-azure sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-default sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.90.1.150700.17.51.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-livepatch-SLE15-SP7_Update_24 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-source sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | kernel-uek ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-container ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-container ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-core ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-core ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-devel ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-devel ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-doc ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-doc ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-modules ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-modules ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-core ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-core ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-devel ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-devel ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-modules ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-modules ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-modules-extra ol 8 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-uek64k-modules-extra ol 9 | 0:5.15.0-324.217.5.2.el9uek | [ELSA-2026-500249](https://patchblox.com/security/data/fix/linux/elsa-2026-500249.md) | Sep 4, 2026 | | Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.90.1 | [SUSE-SU-2026:5091-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5091-1.md) | Nov 7, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.180-1 | [DEBIAN-CVE-2026-64441](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64441.md) | Aug 1, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.100-1 | [DEBIAN-CVE-2026-64441](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64441.md) | Aug 1, 2026 | | Linux | linux Debian 14 | 7.1.4-1 | [DEBIAN-CVE-2026-64441](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64441.md) | Aug 1, 2026 | | Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.100-1~deb12u1 | [DEBIAN-CVE-2026-64441](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64441.md) | Aug 1, 2026 | --- Data as of 2026-11-08T00:53:09Z UTC. 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