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Fencer Vulns
high 7.8

CVE-2023-52457 json

serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed

published 2024-02-23 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57082

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

serial: 8250: omap: Don't skip resource freeing if pm_runtime_resume_and_get() failed

Returning an error code from .remove() makes the driver core emit the little helpful error message:

remove callback returned a non-zero value. This will be ignored.

and then remove the device anyhow. So all resources that were not freed are leaked in this case. Skipping serial8250_unregister_port() has the potential to keep enough of the UART around to trigger a use-after-free.

So replace the error return (and with it the little helpful error message) by a more useful error message and continue to cleanup.

Patch / fix

  • Linux Linux 5.4.268, 5.10.209, 5.15.148, 6.1, 6.1.75, 6.6.14, 6.7.2, 6.8
  • linux Debian 12 6.1.76-1
  • linux Debian 14, Debian 13 6.6.15-1

debian advisories DEBIAN-CVE-2023-52457

  • linux Ubuntu 20.04 LTS 5.4.0-176.196
  • linux Ubuntu 22.04 LTS 5.15.0-102.112
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1122.132
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1057.63
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1126.135
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1055.63
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1054.59
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1069.74

ubuntu advisories UBUNTU-CVE-2023-52457

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt SLE Micro 5.4, SLE Micro 5.3, openSUSE Leap Micro 5.4 +1 more 5.14.21-150400.15.71.1
  • kernel-source-rt SLE Micro 5.4, SLE Micro 5.3 5.14.21-150400.15.71.1
  • kernel-rt SLE Micro 5.5, Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-syms-rt Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-rt_debug Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-source-rt SLE Micro 5.5, Real Time Module 15 SP5, openSUSE Leap 15.5 5.14.21-150500.13.38.1
  • kernel-syms SLE High Performance Computing 15 SP4-ESPOS, Manager Server 4.3, Manager Proxy 4.3 +3 more 5.14.21-150400.24.111.1
  • kernel-source SLE High Performance Computing 15 SP4-ESPOS, Manager Server 4.3, Manager Proxy 4.3 +3 more 5.14.21-150400.24.111.1

suse advisories SUSE-SU-2024:0977-1SUSE-SU-2024:0910-1SUSE-SU-2024:0900-2SUSE-SU-2024:0900-1SUSE-SU-2024:0858-1SUSE-SU-2024:0855-1

  • kernel-source-longterm openSUSE Tumbleweed 6.12.11-1.1
  • kernel-source openSUSE Tumbleweed 6.7.9-1.1

opensuse advisories openSUSE-SU-2025:14705-1openSUSE-SU-2024:13767-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.