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CVE-2026-97412

Linux: pds_core: quiesce DMA before freeing resources

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 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in84fc3f30b87e06a11d1807cd385603522610ed40Also 9eee6b90bee3df496ed9094d9e76d5e478d72d0a, 6443f4f20bdae726fe01cf5946fba9742a0ffda6CVE List
Published24 Sep 2026Updated 21 Oct 2026CVE List

What fixes it

  • 84fc3f30b87e06a11d1807cd385603522610ed40LinuxCVE List
  • 9eee6b90bee3df496ed9094d9e76d5e478d72d0aLinuxCVE List
  • 6443f4f20bdae726fe01cf5946fba9742a0ffda6LinuxCVE 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:

pds_core: quiesce DMA before freeing resources

pdsc_teardown() frees DMA buffers but does not disable bus mastering, leaving the device able to perform DMA after the buffers are freed. This can lead to use-after-free if the device writes to freed memory.

Add pci_clear_master() to pdsc_teardown() to disable bus mastering before freeing resources, ensuring all DMA is quiesced.

Add pci_set_master() to pdsc_setup() to re-enable bus mastering, which is needed for the firmware recovery path since pdsc_teardown() now disables it.

Text from CVE List

Affected versions 10

  • Linuxaffected: 45d76f492938cdc27ddadc16e1e75103f4cfbf56 before 84fc3f30b87e06a11d1807cd385603522610ed40CVE List
  • Linuxaffected: 45d76f492938cdc27ddadc16e1e75103f4cfbf56 before cc8beb70e70fc90e54efdbc1128cf7de799e6be4CVE List
  • Linuxaffected: 45d76f492938cdc27ddadc16e1e75103f4cfbf56 before 9eee6b90bee3df496ed9094d9e76d5e478d72d0aCVE List
  • Linuxaffected: 45d76f492938cdc27ddadc16e1e75103f4cfbf56 before 6443f4f20bdae726fe01cf5946fba9742a0ffda6CVE List
  • Linuxaffected: 6.4CVE List
  • Linuxunaffected: all versions before 6.4CVE List
  • Linuxunaffected: 6.6.160 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 4