All vulnerabilities
CVE-2026-93821

Linux: PCI: altera: Protect root bus removal with rescan lock

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3Also 4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7, 7cbb8f2750d91e64caff89e164ac8280bb80bedcCVE List
Published24 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

  • 442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3LinuxCVE List
  • 4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7LinuxCVE List
  • 7cbb8f2750d91e64caff89e164ac8280bb80bedcLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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

PCI: altera: Protect root bus removal with rescan lock

Hold the pci_rescan_remove_lock lock while stopping and removing a root bus to avoid racing with concurrent rescan or hotplug operations triggered via sysfs. Such races may lead to use-after-free issues or system crashes.

[bhelgaas: commit log]

Text from CVE List

Affected versions 16

  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before cf9d84d1b6a7c3f3780c043df220a7e9e38137ebCVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before fc462f1bdeaea9789928cbfdf5e069ee559c7642CVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before 442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3CVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before 4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7CVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before c0cd65906e5f7e293ef2568c9524cc0a918333c3CVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before 7cbb8f2750d91e64caff89e164ac8280bb80bedcCVE List
  • Linuxaffected: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 before a8759c8ac48c0419f5899e95a6ffc611b07c965bCVE List
  • Linuxaffected: 5.3CVE List
  • Linuxunaffected: all versions before 5.3CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 7