Vulnerability Monitor

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CVE-2023-0045

The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ib_prctl_set  function updates the Thread Information Flags (TIFs) for the task and updates the SPEC_CTRL MSR on the function __speculation_ctrl_update, but the IBPB is only issued on the next schedule, when the TIF bits are checked. This leaves the victim vulnerable to values already injected on the BTB, prior to the prctl syscall.  The patch that added the support for the conditional mitigation via prctl (ib_prctl_set) dates back to the kernel 4.9.176. We recommend upgrading past commit a664ec9158eeddd75121d39c9a0758016097fa96

Published

2023-04-25T23:15:09.013

Last Modified

2025-02-13T17:15:52.813

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-610
  • Type: Primary
    CWE-610
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 3.17 Yes
Operating System linux linux_kernel < 4.5 Yes
Operating System linux linux_kernel < 4.10 Yes
Operating System linux linux_kernel < 4.14.303 Yes
Operating System linux linux_kernel < 4.19.270 Yes
Operating System linux linux_kernel < 5.4.229 Yes
Operating System linux linux_kernel < 5.10.163 Yes
Operating System linux linux_kernel < 5.15.87 Yes
Operating System linux linux_kernel < 6.0.19 Yes
Operating System linux linux_kernel < 6.1.5 Yes
Operating System debian debian_linux 10.0 Yes
Application netapp active_iq_unified_manager - Yes
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Operating System netapp h410c_firmware - Yes
Hardware netapp h410c - No
References