CVE-2023-52615

low-risk
Published 2024-03-18

In the Linux kernel, the following vulnerability has been resolved: hwrng: core - Fix page fault dead lock on mmap-ed hwrng There is a dead-lock in the hwrng device read path. This triggers when the user reads from /dev/hwrng into memory also mmap-ed from /dev/hwrng. The resulting page fault triggers a recursive read which then dead-locks. Fix this by using a stack buffer when calling copy_to_user.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (18)

Patch https://git.kernel.org/stable/c/26cc6d7006f922df6cc4389248032d955750b2a0
Patch https://git.kernel.org/stable/c/5030d4c798863ccb266563201b341a099e8cdd48
Patch https://git.kernel.org/stable/c/6822a14271786150e178869f1495cc03e74c5029
Patch https://git.kernel.org/stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922
Patch https://git.kernel.org/stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e
Patch https://git.kernel.org/stable/c/c6a8111aacbfe7a8a70f46cc0de8eed00561693c
Patch https://git.kernel.org/stable/c/eafd83b92f6c044007a3591cbd476bcf90455990
Patch https://git.kernel.org/stable/c/ecabe8cd456d3bf81e92c53b074732f3140f170d
Patch https://git.kernel.org/stable/c/26cc6d7006f922df6cc4389248032d955750b2a0
Patch https://git.kernel.org/stable/c/5030d4c798863ccb266563201b341a099e8cdd48
Patch https://git.kernel.org/stable/c/6822a14271786150e178869f1495cc03e74c5029
Patch https://git.kernel.org/stable/c/78aafb3884f6bc6636efcc1760c891c8500b9922
Patch https://git.kernel.org/stable/c/aa8aa16ed9adf1df05bb339d588cf485a011839e
Patch https://git.kernel.org/stable/c/c6a8111aacbfe7a8a70f46cc0de8eed00561693c
Patch https://git.kernel.org/stable/c/eafd83b92f6c044007a3591cbd476bcf90455990
Patch https://git.kernel.org/stable/c/ecabe8cd456d3bf81e92c53b074732f3140f170d
Patch https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
Patch https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal