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CVE-2026-41651— PackageKit 安全漏洞

一分钟漏洞结论

影响对象
PackageKit PackageKit
利用判断
尚无明确在野利用证据,仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本;无法立即升级时,限制受影响服务暴露并加强监测。

PackageKit是PackageKit开源的一个用于安装和更新软件的系统。 PackageKit 1.0.2版本至1.3.4版本存在安全漏洞,该漏洞源于事务标志存在竞争条件,可能导致未经授权的用户以root身份安装软件包,造成本地权限提升。

CVSS 8.8 · High EPSS 0.19% · P8

影响版本矩阵 1

厂商产品 版本范围状态
PackageKit PackageKit >= 1.0.2, <= 1.3.4 affected
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一、 漏洞 CVE-2026-41651 基础信息

漏洞信息

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Vulnerability Title
PackageKit vulnerable to TOCTOU Race on Transaction Flags leads to arbitrary package installation as root
来源: CVE Program / CVE List V5
Vulnerability Description
PackageKit is a a D-Bus abstraction layer that allows the user to manage packages in a secure way using a cross-distro, cross-architecture API. PackageKit between and including versions 1.0.2 and 1.3.4 is vulnerable to a time-of-check time-of-use (TOCTOU) race condition on transaction flags that allows unprivileged users to install packages as root and thus leads to a local privilege escalation. This is patched in version 1.3.5. A local unprivileged user can install arbitrary RPM packages as root, including executing RPM scriptlets, without authentication. The vulnerability is a TOCTOU race condition on `transaction->cached_transaction_flags` combined with a silent state-machine guard that discards illegal backward transitions while leaving corrupted flags in place. Three bugs exist in `src/pk-transaction.c`: 1. Unconditional flag overwrite (line 4036): `InstallFiles()` writes caller-supplied flags to `transaction->cached_transaction_flags` without checking whether the transaction has already been authorized/started. A second call blindly overwrites the flags even while the transaction is RUNNING. 2. Silent state-transition rejection (lines 873–882): `pk_transaction_set_state()` silently discards backward state transitions (e.g. `RUNNING` → `WAITING_FOR_AUTH`) but the flag overwrite at step 1 already happened. The transaction continues running with corrupted flags. 3. Late flag read at execution time (lines 2273–2277): The scheduler's idle callback reads cached_transaction_flags at dispatch time, not at authorization time. If flags were overwritten between authorization and execution, the backend sees the attacker's flags.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
来源: CVE Program / CVE List V5
Vulnerability Title
PackageKit 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
PackageKit是PackageKit开源的一个用于安装和更新软件的系统。 PackageKit 1.0.2版本至1.3.4版本存在安全漏洞,该漏洞源于事务标志存在竞争条件,可能导致未经授权的用户以root身份安装软件包,造成本地权限提升。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD

受影响产品

厂商 产品 影响版本 CPE 订阅
PackageKit PackageKit >= 1.0.2, <= 1.3.4 -

二、漏洞 CVE-2026-41651 的公开POC

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三、漏洞 CVE-2026-41651 的情报信息

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CVE-2026-41651 厂商安全公告 (1)

CVE-2026-41651 新闻报道 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-41651

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