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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-37893 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Fix off-by-one error in build_prologue() Vincent reported that running BPF progs with tailcalls on LoongArch causes kernel hard lockup. Debugging the issues shows that the JITed image missing a jirl instruction at the end of the epilogue. There are two passes in JIT compiling, the first pass set the flags and the second pass generates JIT code based on those flags. With BPF progs mixing bpf2bpf and tailcalls, build_prologue() generates N insns in the first pass and then generates N+1 insns in the second pass. This makes epilogue_offset off by one and we will jump to some unexpected insn and cause lockup. Fix this by inserting a nop insn.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/205a2182c51ffebaef54d643e3745e720cded08b kernel.org Patch 
https://git.kernel.org/stable/c/48b904de2408af5f936f0e03f48dfcddeab58aa0 kernel.org Patch 
https://git.kernel.org/stable/c/7e2586991e36663c9bc48c828b83eab180ad30a9 kernel.org Patch 
https://git.kernel.org/stable/c/b3ffad2f02db4aace6799fe0049508b8925eae45 kernel.org Patch 
https://git.kernel.org/stable/c/c74d95a5679741ef428974ab788f5b0758dc78ae kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-193 Off-by-one Error cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-37893
NVD Published Date:
04/18/2025
NVD Last Modified:
04/29/2025
Source:
kernel.org