5.5

CVE-2023-52615: hwrng: core - Fix page fault dead lock on mmap-ed hwrng

Analyzed
AliasesUBUNTU-CVE-2023-52615DEBIAN-CVE-2023-52615
Published 18-03-2024Last modified 11-05-2026

Vulnerability summary

CVE-2023-52615 is a medium (CVSS 5.5) Improper Locking vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 9.2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 19
DLA-3840-1DLA-3842-1DSA-5681-1RHSA-2024:4211RHSA-2024:4352RHSA-2024:9315

Timeline

  1. 18-03-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu116 products
  • linuxAll versions (No fix recorded) | < 4.4.0-256.290 | < 4.15.0-226.238 | < 5.4.0-181.201 | < 5.15.0-106.116
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.4.0-1133.139 | < 4.4.0-1171.186 | < 4.15.0-1169.182 | < 5.4.0-1124.134 | < 5.15.0-1061.67
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < eafd83b92f6c044007a3591cbd476bcf90455990 | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < 5030d4c798863ccb266563201b341a099e8cdd48 | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < c6a8111aacbfe7a8a70f46cc0de8eed00561693c | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < 26cc6d7006f922df6cc4389248032d955750b2a0 | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < aa8aa16ed9adf1df05bb339d588cf485a011839e | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < ecabe8cd456d3bf81e92c53b074732f3140f170d | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < 6822a14271786150e178869f1495cc03e74c5029 | ≥ 9996508b3353063f2d6c48c1a28a84543d72d70b, < 78aafb3884f6bc6636efcc1760c891c8500b9922 | 2.6.33
  • linux_kernel≥ 2.6.33, < 4.19.307 | ≥ 4.20, < 5.4.269 | ≥ 5.5, < 5.10.210 | ≥ 5.11, < 5.15.149 | ≥ 5.16, < 6.1.76 | ≥ 6.2, < 6.6.15 | ≥ 6.7, < 6.7.3
Debian1 product
  • linux< 6.1.76-1 | < 6.6.15-1

3 vendors · 119 products

References

26 links
Show all 26 references