CVE-2026-74648staging: rtl8723bs: validate monitor transmit frame lengths
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before f03398d835f5249c49546f0eb0d0df6792b95d5f; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before a3ac6d849de5f7abe14761d741bbb843ac793454; 554c0a3abf216c991c5ebddcdb2c08689ecd290b builds before 7edd3adb0c80d70b4237640275c559610f438476; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before c5e5d78743992e235b76d2ebe5a403d60315aa8a; 554c0a3abf216c991c5ebddcdb2c08689ecd290b builds before 7b0f62d2986a28e5e4188366bc2f4e2868b14790; 554c0a3abf216c991c5ebddcdb2c08689ecd290b builds before 8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before bd88f6289b7e483216a9c1df15a0460ef9b02cb6; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 6829665d050983907b560173e49dcc6c11cb2730 | CNA record |
References
- https://git.kernel.org/stable/c/f03398d835f5249c49546f0eb0d0df6792b95d5f
- https://git.kernel.org/stable/c/a3ac6d849de5f7abe14761d741bbb843ac793454
- https://git.kernel.org/stable/c/7edd3adb0c80d70b4237640275c559610f438476
- https://git.kernel.org/stable/c/c5e5d78743992e235b76d2ebe5a403d60315aa8a
- https://git.kernel.org/stable/c/7b0f62d2986a28e5e4188366bc2f4e2868b14790
- https://git.kernel.org/stable/c/8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1
- https://git.kernel.org/stable/c/bd88f6289b7e483216a9c1df15a0460ef9b02cb6
- https://git.kernel.org/stable/c/6829665d050983907b560173e49dcc6c11cb2730
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.