CVE-2026-74648
staging: rtl8723bs: validate monitor transmit frame lengths
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.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Aug. 22, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Reject frames lacking the base 802.11 header.
- Reject data frames with incomplete calculated header spans.
- Ensure sufficient data for header writes.
- Update the Linux kernel to the resolved version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74648.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74648 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74648
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74648 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74648 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': 'f03398d835f5249c49546f0eb0d0df6792b95d5f', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': 'a3ac6d849de5f7abe14761d741bbb843ac793454', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': '7edd3adb0c80d70b4237640275c559610f438476', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': 'c5e5d78743992e235b76d2ebe5a403d60315aa8a', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': '7b0f62d2986a28e5e4188366bc2f4e2868b14790', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': '8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': 'bd88f6289b7e483216a9c1df15a0460ef9b02cb6', 'versionType': 'git'}, {'status': 'affected', 'version': '554c0a3abf216c991c5ebddcdb2c08689ecd290b', 'lessThan': '6829665d050983907b560173e49dcc6c11cb2730', 'versionType': 'git'}], 'programFiles': ['drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.12', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/6829665d050983907b560173e49dcc6c11cb2730 Added Reference https://git.kernel.org/stable/c/7b0f62d2986a28e5e4188366bc2f4e2868b14790 Added Reference https://git.kernel.org/stable/c/7edd3adb0c80d70b4237640275c559610f438476 Added Reference https://git.kernel.org/stable/c/8b3e4ed9c35d3d3b64fcc23f4a1f22b37c1865b1 Added Reference https://git.kernel.org/stable/c/a3ac6d849de5f7abe14761d741bbb843ac793454 Added Reference https://git.kernel.org/stable/c/bd88f6289b7e483216a9c1df15a0460ef9b02cb6 Added Reference https://git.kernel.org/stable/c/c5e5d78743992e235b76d2ebe5a403d60315aa8a Added Reference https://git.kernel.org/stable/c/f03398d835f5249c49546f0eb0d0df6792b95d5f