CVE-2026-64445

CVE CVE-2026-64445EUVD EUVD-2026-48789Published 2026-07-25T08:51:16.000ZLast changed 2026-08-05T12:42:09.000ZCVSS 8.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix WEP length underflow and OOB read in OnAuth() OnAuth() has two bugs in the shared-key authentication path. When the Privacy bit is set, rtw_wep_decrypt() is called without verifying that the frame is long enough to contain a valid WEP IV and ICV. Inside rtw_wep_decrypt(), length is computed as: length = len - WLAN_HDR_A3_LEN - iv_len and then passed as (length - 4) to crc32_le(). If len is less than WLAN_HDR_A3_LEN + iv_len + icv_len (32 bytes), length - 4 is negative and, after the implicit cast to size_t, causes crc32_le() to read far beyond the frame buffer. Add a minimum length check before accessing the IV field and calling the decryption path. When processing a seq=3 response, rtw_get_ie() stores the Challenge Text IE length in ie_len, but the subsequent memcmp() always reads 128 bytes regardless of ie_len. IEEE 802.11 mandates a challenge text of exactly 128 bytes; reject any IE whose length field differs, matching the check already applied to OnAuthClient().

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux 554c0a3abf216c991c5ebddcdb2c08689ecd290b <a1fc19d61f661d47204f095b593de507884849f7; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <64ec4192d9c10e96922245d4a6747304cc76b19d; 4.12; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <3e44a7665f3abd320a80d9c64ee4a93317041b8b; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <1f6c9d255bdda41216b6e34c96aa2b1abee0bb84; patch: 6.12.96; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <c9000c93078e5c0a5a651b077c0ec92a4bc7d580; patch: 5.15.212; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <665e1ecb68b4e8419604e70a33f02d1c8b0222c6; patch: 7.1.4; patch: 0; patch: 7.2-rc3; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <d90b9f39f375c9826ef145605dfe97765d0ecb91; 554c0a3abf216c991c5ebddcdb2c08689ecd290b <87cccc2a767f17dcab71e3b9fe5ae29b5516c5ce; patch: 6.6.145; patch: 5.10.261; patch: 6.1.178; patch: 6.18.39

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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