CVE-2022-47520 — An issue was discovered in the Linux kernel before 6

An issue was discovered in the Linux kernel before 6.0.11. Missing offset validation in drivers/net/wireless/microchip/wilc1000/hif.c in the WILC1000 wireless driver can trigger an out-of-bounds read when parsing a Robust Security Network (RSN) information element from a Netlink

01What is this vulnerability?

An issue was discovered in the Linux kernel before 6.0.11. Missing offset validation in drivers/net/wireless/microchip/wilc1000/hif.c in the WILC1000 wireless driver can trigger an out-of-bounds read when parsing a Robust Security Network (RSN) information element from a Netlink packet.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-12-18T06:15:09.473
• Last modified: 2026-10-14T19:16:55.570

09References

• github.com — https://github.com/torvalds/linux/commit/cd21d99e595ec1d8721e1058dcdd4f1f7de1d79…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
• lore.kernel.org — https://lore.kernel.org/r/20221123153543.8568-2-philipturnbull%40github.com
• security.netapp.com — https://security.netapp.com/advisory/ntap-20230113-0007/
• github.com — https://github.com/torvalds/linux/commit/cd21d99e595ec1d8721e1058dcdd4f1f7de1d79…
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
• lore.kernel.org — https://lore.kernel.org/r/20221123153543.8568-2-philipturnbull%40github.com
• security.netapp.com — https://security.netapp.com/advisory/ntap-20230113-0007/
• cert-portal.siemens.com — https://cert-portal.siemens.com/productcert/html/ssa-794697.html