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CVE-2026-14178

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2026
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

openGauss存在非法内存访问导致DoS漏洞

openGauss 在处理带 NLS 参数的 to_timestamp 调用时，to_timestamp_with_fmt_nls() 会将 nls_fmt_str 保存到 u_sess->parser_cxt.nls_fmt_str。在 seqscan + sort 执行路径下，该字符串原本被分配在 SeqScan 的表达式上下文中；当 SeqScan 完成后，该内存上下文会被 reset，但后续结果输出阶段 timestamp_out() 仍会通过 CheckNlsFormat() 访问 u_sess->parser_cxt.nls_fmt_str，导致访问已释放内存。攻击者在具备数据库 SQL 执行权限的情况下，可构造特定 to_timestamp(..., ..., nlsparam) 查询触发 heap-use-after-free。在 ASan/Memcheck 环境下表现为数据库服务退出；在实际运行环境中可能造成后端进程异常退出，影响数据库服务可用性，形成拒绝服务风险。该问题在openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2版本存在，目前已在openGauss-server-7.0.0-RC3版本修复。由于 openGauss-server-7.0.0-RC1版本和openGauss-server-7.0.0-RC2均为创新版本，不会发布针对性补丁包，涉及版本升级至 openGauss-server-7.0.0-RC3或更新版本即可。

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

openGauss-server-7.0.0-RC2

Vendor
openGauss-server
Product
openGauss-server-7.0.0-RC2
Platforms
  • openEuler
  • Centos
Default status
affected
Package collection
https://opengauss.org/zh/download/archive/?version=7.0.0-RC2
openGauss-server-7.0.0-RC2 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
openGauss-server-7.0.0-RC2affectedUnavailableUnavailableUnavailableNone listed

openGauss-server-7.0.0-RC1

Vendor
openGauss-server
Product
openGauss-server-7.0.0-RC1
Platforms
  • openEuler
  • Centos
Default status
affected
Package collection
https://opengauss.org/zh/download/archive/?version=7.0.0-RC1
openGauss-server-7.0.0-RC1 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
openGauss-server-7.0.0-RC1affectedUnavailableUnavailableUnavailableNone listed

openGauss-server-7.0.0-RC3

Vendor
openGauss-server
Product
openGauss-server-7.0.0-RC3
Platforms
  • openEuler Centos
Default status
unaffected
Package collection
https://opengauss.org/zh/download/archive/?version=7.0.0-RC3
openGauss-server-7.0.0-RC3 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
openGauss-server-7.0.0-RC3unaffectedUnavailableUnavailableUnavailableNone listed