CVE-2022-29901 Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed)

What is CVE-2022-29901?

CVE-2022-29901 is a medium-severity vulnerability in Debian Debian Linux, published on 12 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.

Weakness: CWE-668, CWE-200

Which versions are affected by CVE-2022-29901?

It affects 129 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Intel Core I3-6100 Firmware, Intel Core I3-6100e Firmware, Intel Core I3-6100h Firmware, Intel Core I3-6100t Firmware and 123 more.

How do I fix CVE-2022-29901?

Apply the vendor's patch.

Is CVE-2022-29901 being exploited?

There is no known exploitation of CVE-2022-29901 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-29901, GHSA-55c8-6r36-9g85, UBUNTU-CVE-2022-29901.