5.5

CVE-2023-52567: serial: 8250_port: Check IRQ data before use

Analyzed
AliasesUBUNTU-CVE-2023-52567DEBIAN-CVE-2023-52567
Published 02-03-2024Last modified 23-05-2026

Vulnerability summary

CVE-2023-52567 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.2% 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
0.24%
0%100%
Low · +0.01 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 5 · Related 5
SUSE-SU-2024:1320-1SUSE-SU-2024:1321-1SUSE-SU-2024:1466-1SUSE-SU-2024:1480-1SUSE-SU-2024:1490-1

Timeline

  1. 02-03-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: serial: 8250_port: Check IRQ data before use In case the leaf driver wants to use IRQ polling (irq = 0) and IIR register shows that an interrupt happened in the 8250 hardware the IRQ data can be NULL. In such a case we need to skip the wake event as we came to this path from the timer interrupt and quite likely system is already awake. Without this fix we have got an Oops: serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A ... BUG: kernel NULL pointer dereference, address: 0000000000000010 RIP: 0010:serial8250_handle_irq+0x7c/0x240 Call Trace: ? serial8250_handle_irq+0x7c/0x240 ? __pfx_serial8250_timeout+0x10/0x10

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.23% 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.

Ubuntu110 products
  • linux< 5.4.0-171.189 | < 5.15.0-94.104
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1118.128 | < 5.15.0-1053.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ edfe57aedff4ecf3606533aabf8ecf7676c3c5d9, < ee5732caaffba3a37e753fdb89b4958db9a61847 | ≥ 0bd49a043c7984c93c2a0af41222fb71c3986a4e, < c334650150c29234b0923476f51573ae1b2f252a | ≥ 572d48361aa0a6e6f16c1470e5407de183493d0c, < bf3c728e3692cc6d998874f0f27d433117348742 | ≥ d5d628fea5f6181809a9d61b04de6ade53277684, < e14afa4450cb7e4cf93e993a765801203d41d014 | ≥ 424cf29296354d7b9c6c038aaa7bb71782100851, < 2b837f13a818f96304736453ac53b66a70aaa4f2 | ≥ 727e92fe13e81c6088a88d83e466b2b1b553c4e3, < e14f68a48fd445a083ac0750fafcb064df5f18f7 | ≥ 0ba9e3a13c6adfa99e32b2576d20820ab10ad48a, < 3345cc5f02f1fb4c4dcb114706f2210d879ab933 | ≥ 0ba9e3a13c6adfa99e32b2576d20820ab10ad48a, < cce7fc8b29961b64fadb1ce398dc5ff32a79643b | d7c6aa39eb041e2a6a53106104200d11e2acc87f | f5fd2fd999b364801e9790c6f69f3fe3f40ed60f | ≥ 4.14.315, < 4.14.327 | ≥ 4.19.283, < 4.19.296 | ≥ 5.4.243, < 5.4.258 | ≥ 5.10.180, < 5.10.198 | ≥ 5.15.111, < 5.15.134 | ≥ 6.1.28, < 6.1.56 | ≥ 6.2.15, < 6.3 | ≥ 6.3.2, < 6.4 | 6.4
  • linux_kernel≥ 4.14.315, < 4.14.327 | ≥ 4.19.283, < 4.19.296 | ≥ 5.4.243, < 5.4.258 | ≥ 5.10.180, < 5.10.198 | ≥ 5.15.111, < 5.15.134 | ≥ 6.1.28, < 6.1.56 | ≥ 6.4, < 6.5.6 | 6.6:rc1 | 6.6:rc2 | 6.6:rc3
Debian1 product
  • linux< 6.1.64-1 | < 6.5.6-1

3 vendors · 113 products

References

12 links
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