5.5

CVE-2021-46909: ARM: footbridge: fix PCI interrupt mapping

Modified
AliasesUBUNTU-CVE-2021-46909DEBIAN-CVE-2021-46909
Published 27-02-2024Last modified 11-05-2026

Vulnerability summary

CVE-2021-46909 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 15.3% 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 · 0.00 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 8 · Related 6
RHSA-2024:4211RHSA-2024:4352SUSE-SU-2024:1454-1SUSE-SU-2024:1465-1SUSE-SU-2024:1489-1SUSE-SU-2024:1643-1

Timeline

  1. 27-02-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ARM: footbridge: fix PCI interrupt mapping Since commit 30fdfb929e82 ("PCI: Add a call to pci_assign_irq() in pci_device_probe()"), the PCI code will call the IRQ mapping function whenever a PCI driver is probed. If these are marked as __init, this causes an oops if a PCI driver is loaded or bound after the kernel has initialised.

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

No change 0.00 pp

From 0.24% 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.

Ubuntu85 products
  • linux< 4.15.0-147.151 | < 5.4.0-74.83
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1106.113 | < 5.4.0-1049.51
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < 532747fd5c7aaa17ee5cf79f3e947c31eb0e35cf | ≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < 2643da6aa57920d9159a1a579fb04f89a2b0d29a | ≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < 871b569a3e67f570df9f5ba195444dc7c621293b | ≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < 1fc087fdb98d556b416c82ed6e3964a30885f47a | ≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < c3efce8cc9807339633ee30e39882f4c8626ee1d | ≥ 30fdfb929e82450bbf3d0e0aba56efbc29b52b52, < 30e3b4f256b4e366a61658c294f6a21b8626dda7 | 4.13
  • linux_kernel≥ 4.13.0, < 4.14.232 | ≥ 4.15.0, < 4.19.189 | ≥ 4.20.0, < 5.4.114 | ≥ 5.5.0, < 5.10.32 | ≥ 5.11.0, < 5.11.16
Debian1 product
  • linux< 5.10.38-1

3 vendors · 88 products

References

10 links