CVE-2022-3424 — A use-after-free flaw was found in the Linux kernel’s SGI GRU driver in the way

A use-after-free flaw was found in the Linux kernel’s SGI GRU driver in the way the first gru_file_unlocked_ioctl function is called by the user, where a fail pass occurs in the gru_check_chiplet_assignment function. This flaw allows a local user to crash or potentially escalate

01What is this vulnerability?

A use-after-free flaw was found in the Linux kernel’s SGI GRU driver in the way the first gru_file_unlocked_ioctl function is called by the user, where a fail pass occurs in the gru_check_chiplet_assignment function. This flaw allows a local user to crash or potentially escalate their privileges on the system.

02Affected products

Vendor	Product	Versions
n	a / kernel	unknown

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: 2023-03-06T00:00:00.000Z
• Last modified: 2025-03-06T20:27:57.425Z

09References

• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=2132640
• github.com — https://github.com/torvalds/linux/commit/643a16a0eb1d6ac23744bb6e90a00fc21148a9d…
• lore.kernel.org — https://lore.kernel.org/all/20221019031445.901570-1-zyytlz.wz%40163.com/
• www.spinics.net — https://www.spinics.net/lists/kernel/msg4518970.html
• security.netapp.com — https://security.netapp.com/advisory/ntap-20230406-0005/
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html