SB20260731149 - SUSE update for go1.26-openssl
Published: July 31, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2026-27145)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in crypto/x509 certificate hostname verification when processing certificates with a large DNS subject alternative name list. A remote attacker can present a specially crafted certificate to cause a denial of service.
The excessive verification cost occurs before the certificate chain is built, so the overhead is incurred even for untrusted certificates.
2) Link following (CVE-ID: CVE-2026-39822)
CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to access files outside the intended root directory.
The vulnerability exists due to improper link resolution in os.Root file-opening functions when processing a path whose final component is a symbolic link and the path ends with a trailing slash. A local user can supply a crafted path to access files outside the intended root directory.
This issue affects Unix systems.
3) Resource exhaustion (CVE-ID: CVE-2026-42504)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in WordDecoder.DecodeHeader in the mime package when parsing a maliciously crafted MIME header containing many invalid encoded-words. A remote attacker can send a specially crafted MIME header to cause a denial of service.
4) Information disclosure (CVE-ID: CVE-2026-42505)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper information exposure in crypto/tls when performing handshakes that use Encrypted Client Hello. A remote attacker can observe network traffic to disclose sensitive information.
The issue can de-anonymize handshakes by exposing pre-shared key identities in the unencrypted client hello.
5) Improper Output Neutralization for Logs (CVE-ID: CVE-2026-42507)
CWE-ID: CWE-117 - Improper Output Neutralization for Logs
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to inject misleading content into error messages or logs.
The vulnerability exists due to improper output neutralization in the net/textproto package when returning errors that include user-supplied input. A remote attacker can supply crafted input to inject misleading content into error messages or logs.
Remediation
Install update from vendor's website.