CVE-2026-74648

staging: rtl8723bs: validate monitor transmit frame lengths

State: Published
Severity: 7.8 High
Published: Aug 22, 2026
Updated: Oct 16, 2026
Reserved: Aug 15, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

staging: rtl8723bs: validate monitor transmit frame lengths

rtw_cfg80211_monitor_if_xmit_entry() removes the radiotap header and then reads the 802.11 frame control field without checking that a base 802.11 header remains.

The data path also pulls the calculated 802.11, QoS and SNAP header span before confirming that the skb contains it. A truncated frame can therefore cause out-of-bounds reads or leave insufficient data for the Ethernet address writes.

Reject frames that do not contain the base 802.11 header and data frames that do not contain their complete calculated header span.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	554c0a3abf216c991c5ebddcdb2c08689ecd290b to before f03398d835f5249c49546f0eb0d0df6792b95d5fAffected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before a3ac6d849de5f7abe14761d741bbb843ac793454Affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 7edd3adb0c80d70b4237640275c559610f438476Affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before c5e5d78743992e235b76d2ebe5a403d60315aa8aAffected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 7b0f62d2986a28e5e4188366bc2f4e2868b14790Affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1Affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before bd88f6289b7e483216a9c1df15a0460ef9b02cb6Affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 6829665d050983907b560173e49dcc6c11cb2730Affected
LinuxLinux	4.12Affected before 4.12Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.152 through 6.6.Not affected 6.12.104 through 6.12.Not affected 6.18.45 through 6.18.Not affected 7.1.9 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

554c0a3abf216c991c5ebddcdb2c08689ecd290b to before f03398d835f5249c49546f0eb0d0df6792b95d5fAffected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before a3ac6d849de5f7abe14761d741bbb843ac793454Affected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 7edd3adb0c80d70b4237640275c559610f438476Affected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before c5e5d78743992e235b76d2ebe5a403d60315aa8aAffected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 7b0f62d2986a28e5e4188366bc2f4e2868b14790Affected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1Affected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before bd88f6289b7e483216a9c1df15a0460ef9b02cb6Affected
554c0a3abf216c991c5ebddcdb2c08689ecd290b to before 6829665d050983907b560173e49dcc6c11cb2730Affected

LinuxLinux

4.12Affected
before 4.12Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.152 through 6.6.*Not affected
6.12.104 through 6.12.*Not affected
6.18.45 through 6.18.*Not affected
7.1.9 through 7.1.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.