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Known exploited vulnerability

CVE-2022-0847

highCVSS 3.1 7.8In CISA KEVEPSS 93%Published · n/a

The short answer

CVE-2022-0847 affects n/a kernel and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-04-25: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe and push_pipe functions in the Linux kernel and could thus contain stale values. An unprivileged local user could use this flaw to write to pages in the page cache backed by read only files and as such escalate their privileges on the system.

Weakness: CWE-665.

Severity

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Apr 25, 2022

Federal due date May 16, 2022

EPSS, next 30 days

93%

Higher than 100% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply updates per vendor instructions.

Affected products

kernel. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2022-0847 being exploited?

Yes. CISA added CVE-2022-0847 to its Known Exploited Vulnerabilities catalog on 2022-04-25, with a federal remediation due date of 2022-05-16.

How do I fix CVE-2022-0847?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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