CVE-2022-1055

moderate-risk
Published 2022-03-29

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (19)

Affected Vendors

Redhat Linux Canonical Fedoraproject Netapp

References (10)

Third Party Advisory http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LS...
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04...
Exploit https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
Third Party Advisory https://security.netapp.com/advisory/ntap-20220506-0007/
Exploit https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc
Third Party Advisory http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LS...
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04...
Exploit https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5
Third Party Advisory https://security.netapp.com/advisory/ntap-20220506-0007/
Exploit https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc
43
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 0/34 · Minimal
Exposure 19/34 · Moderate