GHSA-p782-xgp4-8hr8 BIT-golang-2022-29526 CVE-2022-29526 GO-2022-0493

golang.org/x/sys/unix has Incorrect privilege reporting in syscall

Medium Go

Severity: 5.3 / 10; Medium · CVSS 3.1
Exploit chance (EPSS): 2.95%; Chance of exploitation in the next 30 days. Higher than 87.17% of scored vulnerabilities.
Known exploited: No; Not in CISA's catalog
Weakness: CWE-269 Improper Privilege Management
Fix: Available; 2 packages have a fixed version

Description

Go before 1.17.10 and 1.18.x before 1.18.2 has Incorrect Privilege Reporting in syscall. When called with a non-zero flags parameter, the Faccessat function could incorrectly report that a file is accessible.

Specific Go Packages Affected

golang.org/x/sys/unix

Affected versions

Go

Package	Vulnerable	Fixed in
golang.org/x/sys	`< 0.0.0-20220412211240-33da011f77ad`	`0.0.0-20220412211240-33da011f77ad`
stdlib	`< 1.17.10` `>= 1.18.0-0, < 1.18.2`	`1.17.10` `1.18.2`

How to fix

Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.

golang.org/x/sys Go → `0.0.0-20220412211240-33da011f77ad`

go

go get golang.org/x/sys@v0.0.0-20220412211240-33da011f77ad && go mod tidy

stdlib Go → `1.18.2`

go

go get stdlib@v1.18.2 && go mod tidy

Severity breakdown

CVSS 3.1 5.3

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Weakness

CWE-269: Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

How to prevent it

Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design: Follow the principle of least privilege when assigning access rights to entities in a software system.
Architecture and Design: Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.

References

Advisories

Packages

github.com/golang/go

Timeline

Jun 23, 2022 Published
Sep 10, 2026 Last updated by the source
Oct 31, 2026 Latest EPSS score

Advisory	Severity	Why it's related
GHSA-4374-p667-p6c8 HTTP/2 rapid reset can cause excessive work in net/http	High Known exploited	Also affects stdlib
CVE-2020-0601 Certificate validation bypass on Windows in crypto/x509	High Known exploited	Also affects stdlib
RUSTSEC-2026-0382 Distrust compromised intermediate certificates in crypto/x509	Medium	Also affects stdlib
GO-2026-6613 HTTP/1 server connection desynchronization after 2xx CONNECT response in net/http	High	Also affects stdlib
GO-2026-6609 Lack of limit on size of parsed Range headers in net/http	High	Also affects stdlib
GO-2026-6608 Memory limit bypass when parsing MIME headers in net/textproto, mime/multipart	High	Also affects stdlib
GO-2026-6607 Reject malformed ECH outer extension references in crypto/tls	High	Also affects stdlib
GO-2026-6604 Root.Mkdir(All) can follow junctions out of the root on Windows in os	Critical	Also affects stdlib

Credits: Joël Gähwiler (@256dpi)

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