AZL-103670
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-103670.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-103670
- Upstream
- Published
- 2026-09-24T17:17:11Z
- Modified
- 2026-09-25T14:15:44Z
- Summary
- CVE-2026-93784 affecting package kernel 6.6.157.1-1
- Details
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In the Linux kernel, the following vulnerability has been resolved:
wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()
The KASAN allocation trace shows that a malformed IE buffer is stored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any validation. The crash trace shows that a subsequent SIOCSIWESSID triggers a connection attempt which calls cfg80211_sme_get_conn_ies() to process the stored IE buffer, causing:
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An out-of-bounds read in skip_ie() which reads ies[pos+1] (the length byte) past the end of the 1-byte buffer.
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An integer underflow in the memcpy size argument when offs returned by ieee80211_ie_split() exceeds ies_len, causing unsigned subtraction to wrap to SIZE_MAX and triggering a fortify panic.
Fix this by validating the IE buffer in cfg80211_wext_siwgenie() before storing it.
[drop unnecessary ie_len check, update commit message]
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- References