What’s Vulnerable › Vulnerabilities

CVE-2017-7541

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-07-25 · updated 2026-06-17
• Weakness: CWE-119

Description

The brcmf_cfg80211_mgmt_tx function in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c in the Linux kernel before 4.12.3 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted NL80211_CMD_FRAME Netlink packet.

Affected products

• Linux kernel: from 3.9 before 3.10.108; from 3.11 before 3.16.48; from 3.17 before 3.18.62; from 3.19 before 4.1.43; from 4.2 before 4.4.78; from 4.5 before 4.9.39 — fixed in 3.10.108, 3.16.48, 3.18.62, 4.1.43, 4.11.12, 4.12.3

How to fix

Upgrade to a fixed version: Linux kernel 3.10.108, 3.16.48, 3.18.62, 4.1.43. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8f44c9a41386729fea410e688959ddaa9d51be7c
• http://openwall.com/lists/oss-security/2017/07/24/2
• http://www.debian.org/security/2017/dsa-3927
• http://www.debian.org/security/2017/dsa-3945
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.3
• http://www.securityfocus.com/bid/99955
• http://www.securitytracker.com/id/1038981
• https://access.redhat.com/errata/RHSA-2017:2863
• https://access.redhat.com/errata/RHSA-2017:2918
• https://access.redhat.com/errata/RHSA-2017:2930
• https://access.redhat.com/errata/RHSA-2017:2931
• https://bugzilla.novell.com/show_bug.cgi?id=1049645

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