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With package: haveged

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Published
Permalink CVE-2026-41054
7.8 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Local (L)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): High (H)
  • Integrity (I): High (H)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Local (L)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): High (H)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): High (H)
  • Modified Availability (MA): High (H)
updated 2 days, 13 hours ago by @LeSuisse Activity log
  • Created suggestion 2 days, 18 hours ago
  • @LeSuisse accepted 2 days, 13 hours ago
  • @LeSuisse published on GitHub 2 days, 13 hours ago
Missing exit out of permission check in haveged could lead to root exploit

In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`ASCII_NAK`), it **fails to stop execution**. The code proceeds to the `switch` statement, allowing any local unprivileged user to execute privileged commands such as `MAGIC_CHROOT`.

Affected products

haveged
  • <1.9.14-150400.3.11.1
  • <1.9.14-150600.11.6.1
libhavege2
  • <1.9.14-150400.3.11.1
  • <1.9.14-150600.11.6.1
haveged-devel
  • <1.9.14-150400.3.11.1
  • <1.9.14-150600.11.6.1

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