CVE-2022-1055

Use after Free in tc_new_tfilter allowing for privilege escalation in Linux Kernel

CVSS 8.6 HIGHEPSS 0.5%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.6EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

29 Mar 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Affected products

Linux · Kernel

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References

http://packetstormsecurity.com/files/167386/Kernel-Live-Patch-Security-Notice-LSN-0086-1.html https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5 https://kernel.dance/#04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5 https://security.netapp.com/advisory/ntap-20220506-0007/https://syzkaller.appspot.com/bug?id=2212474c958978ab86525fe6832ac8102c309ffc