[SECURITY] cfg80211: wext: avoid copying malformed SSIDs (CVE-2019-17133)#128
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Mifacopy wants to merge 1 commit intofacebookincubator:oculus-go-kernel-masterfrom
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[SECURITY] cfg80211: wext: avoid copying malformed SSIDs (CVE-2019-17133)#128Mifacopy wants to merge 1 commit intofacebookincubator:oculus-go-kernel-masterfrom
Mifacopy wants to merge 1 commit intofacebookincubator:oculus-go-kernel-masterfrom
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Fix CVE-2019-17133.
Upstream commit: 4ac2813cc867ae563a1ba5a9414bfb554e5796fa
cfg80211_mgd_wext_giwessid() did not reject an overly long SSID information
element before copying it to userspace, leading to a buffer overflow.
Add a bounds check against IW_ESSID_MAX_SIZE prior to memcpy() and propagate
-EINVAL on invalid length.
Reference: CVE-2019-17133